Category: Process & Timeline

TL;DR: A rural driveway in Idaho is governed by its own code section, not by the fire-lane numbers most people repeat. Idaho’s fire code requires a driveway at least 12 feet wide with 13 feet 6 inches of clear height, a grade no steeper than 10 percent, a turnaround once it runs past 150 feet, and a posted address at the entrance. Teton County layers on a 16-foot built width, a pullout every 400 feet on long dead ends, an 18-inch culvert where you meet the county road, and an approach permit before you touch the ditch.

Get the route staked before you close on the lot. The driveway is the one piece of site work you cannot move later.

I have walked a lot of lots in Teton Valley and eastern Idaho with people who had already picked their house plan. Almost nobody has thought about how they are going to get to it. Then we stake the route and the whole budget shifts, because the lot has a 14 percent pitch off the county road, the only place the approach will fit is 300 feet uphill from where they wanted it, and the fire district is going to want a place for an engine to turn around before they will sign off on a certificate of occupancy.

That conversation is avoidable. In 20 years of building I have never once seen a driveway get cheaper by being figured out later. Here is what the rules actually say, what the county actually enforces, and what I would want to know before I bought a rural lot.

What does Idaho actually require for a rural driveway?

Idaho has a dedicated driveway code section, and almost nobody quotes it. The Idaho State Fire Marshal adopts the International Fire Code through administrative rule and then amends Chapter 5, adding Sections 503.7 through 503.7.8 specifically for driveways. That amendment is current as of July 1, 2024. You can read it in IDAPA 18.08.01, the Idaho rule adopting the International Fire Code.

Here is the part that matters most, and the reason this post exists. Idaho also adopts Appendix D of the fire code, which is the fire apparatus access road appendix. Appendix D is where the famous 20-foot width comes from. But the Idaho amendment adds a line to Appendix D saying that driveways described in Sections 503.7 through 503.7.8 are not subject to Appendix D.

So when somebody tells you your house driveway has to be 20 feet wide, they are quoting the wrong section. A single-family driveway in Idaho is a 503.7 driveway. The state minimum is 12 feet.

What Section 503.7 and its subsections require:

• A driveway is required when any part of the first-story exterior wall of the house is more than 150 feet from a fire apparatus access road.
• Minimum unobstructed width 12 feet. Minimum unobstructed height 13 feet 6 inches. That height is measured through tree canopy and gate arches, not just at the entrance.
• Driveways over 150 feet need a turnaround.
• Driveways over 200 feet long and under 20 feet wide can be required to have turnouts.
• A turnaround needs a 30-foot inside turning radius and a 45-foot outside turning radius.
• A turnout is an all-weather surface at least 10 feet wide and 30 feet long, placed where a rise or a bend blocks the line of sight.
• One driveway may serve no more than five single-family dwellings.
• Gradients may not exceed 10 percent unless the fire code official approves otherwise.
• A permanent address sign at the driveway entrance, readable from both directions of travel.
• Bridges get posted load limits at both ends, with design loads set by the fire code official.
• Security gates need an approved means of emergency operation and have to work at all times.
• The surface has to carry the loads of the local responding fire apparatus and be an all-weather driving surface.

How wide does my driveway have to be?

Twelve feet is the state floor. Your county is allowed to be stricter, and in Teton Valley it is.

Teton County, Idaho adopted Highway and Street Guidelines that treat a driveway as an access serving two parcels or fewer, and they publish a built section for it: a 6-foot lane with a 2-foot shoulder, for 16 feet of total width. They also restate the 13-foot-6-inch vertical clearance and require the surface to be graveled or hard-surfaced. The document is public: Teton County Idaho Road Design Standards.

Here is how the three rule sets stack up, because they are not the same document and people mix them constantly.

Item	Idaho IFC 503.7 (house driveway)	IFC Appendix D (access road)	Teton County ID guidelines
Minimum width	12 ft unobstructed	20 ft unobstructed	16 ft total built section
Vertical clearance	13 ft 6 in	13 ft 6 in	13 ft 6 in
Maximum grade	10% unless approved	10% unless approved	10%, fire marshal may approve steeper
Turnaround trigger	Over 150 ft	Dead end over 150 ft	Dead end over 150 ft, per fire code
Turning radius	30 ft inside / 45 ft outside	Set by fire code official	Figures only, no stated radius
Pullouts / turnouts	Over 200 ft and under 20 ft wide	Not addressed	Dead end over 400 ft: 35-ft pullout every 400 ft
How many homes	Up to 5 dwellings	Not a driveway provision	2 parcels or fewer; 3+ becomes a local road
Surface	All-weather, carries apparatus	All-weather, 75,000 lb apparatus	Graveled or hard-surfaced

Notice the conflict in that table. The state says a driveway can serve up to five houses. Teton County says a driveway serves two parcels or fewer and that three or more parcels makes it a local road, which is a far more expensive standard. If you and two neighbors are thinking about sharing one access off the county road, that distinction is the whole ballgame, and it is worth a phone call to the county before anyone writes an easement.

My own practical floor is wider than any of these numbers. I build to a 14-foot driving surface on a straight run and 16 feet through curves, because 12 feet of gravel becomes about 9 feet of usable lane after one winter of plow berms and two summers of edge ravel. The extra 2 feet is the cheapest insurance on the whole site.

How steep can it be before it stops working in February?

Ten percent is the code ceiling. Ten percent is not a target.

Ten percent means a foot of rise for every 10 feet you travel. On a dry September afternoon in a half-ton truck, it feels like nothing. In mid-February, with a quarter inch of refrozen melt on packed gravel and a north aspect that never sees sun, 10 percent is where a two-wheel-drive delivery van stops and an oil truck refuses to come up. I have had a concrete truck turn around at the bottom of a 12 percent pitch and I do not blame the driver.

What I actually design to on a rural driveway:

• 8 percent sustained maximum on any stretch you will drive in winter.
• Under 5 percent for the last 30 feet at the garage apron, so you are not starting uphill from a stop on ice.
• Under 3 percent for the first 20 feet off the county road, so you have a flat place to stop and look, and so plow wing spray does not build a ramp at the entrance.
• No grade break at a curve. Combine a 9 percent pitch with a tight radius and you get a spot where a long trailer drags and a truck loses traction at the same time.
• Crown or cross-slope of 2 to 4 percent the whole way, because water sitting on a driveway in October is ice in November.

South and west aspects are worth real money on a steep lot. The same 9 percent pitch that is a problem on a north-facing approach will melt clean by noon on a south-facing one. On the west side of Teton Valley, where a lot of the good acreage sits above the valley floor, aspect is usually the difference between a driveway you plow and a driveway you fight.

What happens once the driveway is longer than 150 feet?

You owe the fire district a turnaround, and 150 feet goes by faster than people expect. A setback off a county road plus a building envelope pushed back for views will put most rural houses past it.

Idaho’s 503.7.2 sets the geometry: a 30-foot inside radius and a 45-foot outside radius. If your driveway touches the access road at more than one point, so an engine can drive through instead of backing out, that can qualify instead, as long as every change of direction meets those radii.

If the project ever gets treated as an access road rather than a 503.7 driveway, which happens on shared access and on some subdivision roads, Appendix D sets the sizes. Those are the numbers worth knowing because they tell you how much flat ground a turnaround really takes.

Dead-end length	Required width	Turnaround required
0 to 150 ft	20 ft	None
151 to 500 ft	20 ft	120-ft hammerhead, 60-ft “Y”, or 96-ft diameter cul-de-sac
501 to 750 ft	26 ft	120-ft hammerhead, 60-ft “Y”, or 96-ft diameter cul-de-sac
Over 750 ft	Special approval	Special approval

A 96-foot diameter circle is a third of an acre of flat, graveled, plowed ground. On a tight or steep lot that is not a detail, it is a site-plan decision. A hammerhead almost always costs less to build and less to plow, and it is the shape I push for when the lot will allow it.

Teton County adds one more item on long runs: a dead-end driveway over 400 feet gets a pullout every 400 feet, each one 35 feet long. That is a passing bay. It matters more than it sounds on a quarter-mile driveway when a concrete truck and a framing crew show up at the same time.

Can one driveway serve more than one house?

Sometimes, and this is where I see the most expensive mistakes on shared rural access.

Idaho’s fire code allows one driveway to serve up to five single-family dwellings. Teton County’s guidelines define a driveway as serving two parcels or fewer and kick anything serving three or more parcels into the local road standard, which means a wider section, engineered drainage and a different construction spec. Two different documents, two different thresholds, and the stricter one governs.

Beyond code, a shared driveway is a legal document, not a handshake. Before I would build on a shared access I want to see, in writing and recorded:

• The easement width, and whether it is wide enough for the built section plus snow storage plus the ditch.
• Who maintains it, who plows it, and how the bill gets split.
• What happens when one owner wants to pave and the other does not.
• Whether the easement allows utilities in the same corridor, because running power and fiber up a separate trench costs real money.
• Whether a future parcel split can add users to it, which is how a two-parcel driveway quietly becomes a four-parcel road.

I have watched two good neighbors spend more on lawyers over an unwritten plowing arrangement than the driveway cost to build. Get it recorded.

Who issues the permit, and what happens if I skip it?

Every new access onto a county road needs an approach permit before you cut the ditch. Teton County states it plainly in its guidelines: all new access into county roads, including driveways, requires the appropriate permit, and approaches also have to follow the Local Highway Technical Assistance Council’s Standard Approach Policy, which the county incorporates by reference. LHTAC is the state body that publishes that policy for Idaho’s local highway jurisdictions.

Which office you deal with depends on whose road you are touching:

• County road in Teton, Jefferson, Madison or Bonneville County: the county road and bridge department issues the approach permit.
• City street inside Driggs, Victor, Tetonia or Rigby: the city’s public works department.
• State highway, which includes Highway 33 through the valley and Highway 20 on the Rigby side: the Idaho Transportation Department, and that review takes longer because sight distance and turning movements get looked at seriously.
• Highway district in some parts of eastern Idaho, which is a separate taxing body from the county.

Skipping it is not a paperwork problem. It is a certificate-of-occupancy problem. The approach, the address sign and the turnaround all show up at final inspection, and an unpermitted approach can mean cutting out finished work and rebuilding it to the published standard in the middle of a move-in. SwagerBuilds pulls the approach permit as part of the build, the same way we handle the county inspection sequence and the Teton County permit timeline. You should not be chasing a road department while you are picking tile.

What size culvert do I need where I meet the road?

Teton County requires culverts at all intersections with county roads unless they specifically approve otherwise, and it publishes the minimums: 18-inch minimum diameter, 30-foot minimum length. Cover over the pipe can be reduced to 6 inches on a residential driveway. Drainage has to be diverted off the driveway into the roadside ditch rather than running down it.

The 18-inch number is a floor, not an answer. The actual size depends on the ditch you are crossing and what drains into it upstream. I have put in 24-inch pipe on a crossing where the county minimum would have passed plan review and plugged with ice by the second winter. An undersized culvert does not fail politely. It freezes solid, the ditch backs up, the water finds the low spot in your new driveway, and you learn about it at 6 a.m. during a thaw.

Things I watch on a crossing:

• Irrigation ditches run full in July and dry in January, so the pipe has to be sized for the irrigation season and sloped to drain so it does not hold standing water into freeze-up.
• Inlet and outlet protection. Rock the ends. A bare pipe end in silty soil undermines itself.
• Flowline continuity. The pipe has to match the existing ditch grade or you have built a dam.
• Headwalls where the fill is steep, because gravel shoulders at a pipe end are the first thing a plow wing takes out.

If your lot sits in a mapped flood hazard area or crosses a live stream, you are into a different review, often with the Army Corps or the state, and that belongs in the design phase rather than three weeks before excavation. It is one of the items we work through when we prepare land to build a house.

Where is the snow going to go?

This is the question that separates people who have wintered here from people who have not, and it is the one with the least code behind it. Teton County’s residential building-permit design checklist does not set a snow-storage dimension for a single-family driveway. There is no number to point at. That does not make it optional, it just means nobody will catch the mistake for you.

Teton Valley sits under an 85 psf ground snow load below 6,600 feet of elevation and 100 psf at or above it. That is the structural number for your roof, and it is also a decent proxy for how much snow is going to end up pushed to the sides of your driveway. A plow does not remove snow. It relocates it.

Field rules I hold to:

• Keep a clear 4 to 6 feet outside the driving surface on both sides, no fence, no boulders, no shrubs, no irrigation box, no power pedestal. That strip is the snow shelf.
• Plan a dedicated push area at the top, usually a widened spot at the garage end, sized so three or four storms of berm can sit there without eating the turnaround.
• Never push snow downhill into the approach. It melts, runs back into the entrance, and freezes where the county plow has already built a windrow.
• Keep berms off the sight triangle at the county road. A 5-foot berm at the entrance in January is a blind corner.
• Set utility pedestals, propane tanks, well heads and mailboxes outside the shelf, because the only thing a plow finds reliably is the thing you forgot to flag.
• Mark the edges. Reflective driveway markers every 25 to 30 feet on a long run are a few dollars each and they save the shoulders.

Snow storage is also a spot where a rural driveway and the house plan have to be designed together. A garage that faces the prevailing drift, or a turnaround tucked tight against a cut bank, creates a plowing problem you cannot solve later. We coordinate that in the design agreement, where the site plan, the grading plan and the floor plan get resolved at the same time instead of in sequence.

Gravel, chip seal, asphalt or concrete?

On a long rural driveway I recommend gravel more often than clients expect, and I am not being cheap. I am being honest about frost.

Surface	Works on steep grade	Plowing	Frost behavior	Repairability	Best fit
Gravel	Fair; ravels above 8%	Needs a shoe or skid on the blade	Very forgiving, moves and settles	Excellent, add material and regrade	Long runs, new fill, lots that are still settling
Chip seal	Fair to good	Good	Moderate, cracks but stays serviceable	Good, spot seal	Dust control on a long drive at lower cost than paving
Asphalt	Good	Very good, clean scrape	Cracks at the edges, heaves on bad base	Fair, patches show	Shorter runs on a well-built base, after the fill has settled
Concrete	Good with broom finish	Excellent	Unforgiving, panels crack and lift	Poor, you replace panels	Aprons, garage approach, turnaround pads

What I actually build most often is a hybrid: gravel for the run, concrete for the last 25 to 40 feet at the garage and for the turnaround pad. The gravel absorbs frost movement on new fill. The concrete gives you a clean, plowable, mud-free surface where you park, unload groceries and walk kids to the truck. If a client wants the whole thing paved, I ask them to live on gravel through one winter and one spring breakup first, then pave. Paving over fill that has not finished settling is how you buy an asphalt driveway twice.

How thick does the base need to be in Teton Valley frost?

Teton County’s design criteria put the bottom of a footing 32 inches below finished grade. That is the frost line the county builds to, and it tells you what the ground under your driveway is doing every spring.

What I spec, subject to the soils report on the actual lot:

• Strip the topsoil and organics completely. Every driveway failure I have been called to look at was built on soil that should have been hauled off.
• Woven geotextile over the subgrade wherever the soils report shows silt or clay. It is the cheapest line item on the job and it keeps fines from pumping up into the rock.
• 8 to 12 inches of compacted pit run or 3-inch minus as the structural layer, placed in lifts and compacted, not dumped and bladed.
• 3 to 4 inches of 3/4-inch minus crushed as the driving course, because crushed rock with fines locks up and round river rock never does.
• Ditches and daylighted cross drains so water leaves the corridor instead of sitting under it. Drainage beats thickness. A thin section that drains outlasts a thick one that holds water.
• Build it before the house, then build it again. The construction traffic is harder on a driveway than the homeowner will ever be. We build a working road early, use it all season, and then regrade and top it at the end.

That last point is worth a dollar figure in your head even without a quote: the access road you drive concrete trucks over in May is not the finished driveway. If a builder’s number does not include coming back to fix it, the number is incomplete. That is the same category of gap I wrote about in the hidden costs of building a custom home.

What drives the cost of a driveway, and why I won’t quote you a per-foot number

I will not publish a per-foot driveway price, for the same reason I will not publish a septic price. There is no honest one. A 200-foot flat approach on good gravelly soil and a 1,400-foot climb through silt with a culvert crossing and a cul-de-sac at the top are not the same product, and any number that covers both is marketing.

Here is what actually moves the number on a rural driveway, roughly in order of impact:

• Length. Everything else multiplies by it.
• Earthwork volume. Cut and fill to hold the grade under 10 percent, and whether you have a place on site to put the spoils or have to haul them off.
• Soils. Gravelly subgrade is cheap to build on. Silt and clay mean geotextile, more rock, and more drainage.
• Rock. Hitting ledge turns an excavator job into a hammer or blasting job.
• Haul distance for aggregate, which is why the same spec costs differently in Tetonia than in Rigby.
• Crossings. Culverts, irrigation ditches, and anything that counts as a bridge, which brings engineered design and posted load limits with it.
• Turnaround. A 96-foot cul-de-sac is a lot of flat ground to create on a sloped lot.
• Utility corridor. Power, water line and fiber in the same trench is efficient. Three separate routes is not.
• Surface choice and whether you are paving now or after settlement.

In a SwagerBuilds design agreement, the driveway gets surveyed, staked and priced as a real line item with real quantities before you sign a construction contract, instead of appearing as an allowance that moves later. That is the whole point of doing the design phase first. Site work is where vague allowances do the most damage, and the driveway is the biggest one on most rural lots. For how the construction number itself works, there is the cost to build in Teton Valley, which starts at $400 per square foot and goes up.

What I check before you buy the lot

If you are still shopping, this is the list I run in about 20 minutes on site, and it has talked people out of lots that looked great in the listing photos.

1. Where can the approach physically go? Sight distance both directions, ditch depth, and whether the county or ITD will allow it there at all.
2. What is the grade from the approach to the building envelope? Walk it. If you are breathing hard, a delivery truck is not coming up it in January.
3. Which direction does the route face? North and east aspects hold ice. South and west clear themselves.
4. How far from the road to the house wall? Over 150 feet means a turnaround, and you need to find the flat ground for it on the plat, not in the field.
5. Is the access shared, and is the easement recorded? Width, maintenance, plowing, utilities, future splits.
6. What crosses the route? Irrigation ditches, seasonal drainage, wetlands, and whether a culvert or a bridge is involved.
7. Where does the snow go? Stand at the top and point to the push area. If you cannot, the design is not done.
8. How far is utility power? The driveway corridor is usually the utility corridor, and distance to the nearest transformer is a real number.
9. What do the neighbors’ driveways look like in a satellite image from March? Historical imagery tells you who is winning and losing the snow fight on that road.

The same logic runs through my field guides to the best lots in Driggs and the best lots in Victor. Access, aspect and water are the three things that decide whether a lot is cheap or expensive to build on, and access is the one buyers skip. If you already own your parcel, here is how building on your own lot works, and the full start-to-finish checklist.

One more sequencing note. The driveway, the septic field, the well and the power trench all compete for the same ground, and the septic drainfield wins, because its location is set by soil and separation distances rather than convenience. Lay all four out at once. On a lot where a backup generator is in the plan, the propane tank needs truck access on the driveway too, which is another reason the turnaround is not optional. And on a wooded lot, the driveway corridor is part of your wildfire access and defensible space plan, because an engine that cannot get in also cannot get out.

Frequently asked questions

How wide does a driveway need to be in Idaho?

Idaho’s fire code sets a minimum unobstructed width of 12 feet with 13 feet 6 inches of vertical clearance for a driveway serving a house. Counties can require more. Teton County, Idaho publishes a 16-foot total built section for a driveway serving two parcels or fewer. The commonly quoted 20-foot number comes from Appendix D of the fire code, which Idaho amended so that it does not apply to these driveways. I build a 14-foot driving surface on straight runs and 16 feet through curves because plow berms narrow the usable lane every winter.

How steep can a driveway be in Idaho?

Driveway gradients may not exceed 10 percent unless the fire code official approves something steeper. Ten percent is a legal ceiling, not a good design target in snow country. On a rural driveway I design to 8 percent sustained maximum, under 5 percent for the last 30 feet at the garage, and under 3 percent for the first 20 feet off the county road so you have a flat place to stop and so the plow does not build a ramp at the entrance.

Do I need a turnaround on a long driveway?

Yes, once the driveway runs more than 150 feet. Idaho requires a turnaround with a 30-foot inside turning radius and a 45-foot outside turning radius. A driveway that connects to the access road at two points can qualify instead if every change of direction meets those radii. Where the fire code’s access road appendix applies instead, the published options are a 120-foot hammerhead, a 60-foot “Y”, or a 96-foot diameter cul-de-sac, and a hammerhead is usually cheaper to build and to plow.

Do I need a permit to build a driveway in Teton County, Idaho?

Yes. Every new access onto a county road, including a residential driveway, requires an approach permit, and the approach has to meet the county’s guidelines plus Idaho’s LHTAC Standard Approach Policy. If you are connecting to a state highway such as Highway 33, the Idaho Transportation Department reviews it instead, and that takes longer. A culvert is required where you meet a county road unless the county approves otherwise, with an 18-inch minimum diameter and a 30-foot minimum length. We pull the approach permit as part of the build.

Should I pave my driveway or leave it gravel?

On a long rural driveway on new fill, I recommend gravel for the run and concrete for the last 25 to 40 feet at the garage plus the turnaround pad. Gravel tolerates frost movement and is repairable with material and a blade. Asphalt and concrete are better to plow and better underfoot, but they are unforgiving when the base or the fill is still settling. If you want the whole thing paved, live on gravel through one winter and one spring breakup first, then pave, so you do not buy the surface twice.

Want the access figured out before you buy?

If you are looking at a rural lot in Teton Valley, Driggs, Victor, Tetonia, Rigby or the eastern Idaho corridor, I will walk it with you and tell you what the driveway is going to take before you are committed. Survey, staking, grades, crossings, turnaround and the approach permit all get resolved in the design agreement, as real quantities rather than an allowance. Call me at (208) 520-0636 or get in touch here. You can also see how we work on custom homes and what the design phase covers.

Built different. Built right. Built by SwagerBuilds.

Code citations in this post are to IDAPA 18.08.01, the Idaho rule adopting the International Fire Code, as amended effective July 1, 2024, and to the Teton County, Idaho Highway and Street Guidelines. Rules change and local officials have discretion. Confirm current requirements with the jurisdiction that owns your road before you design around them.

What snow load does a Teton Valley home need? Teton County, Idaho requires a roof designed for a ground snow load of 85 pounds per square foot below 6,600 feet of elevation and 100 psf at or above it, plus dead load and drift, unless a licensed Idaho engineer runs a site-specific calculation. Driggs sits at about 6,100 feet, so most valley-floor lots design to 85 psf; lots climbing Ski Hill Road toward Grand Targhee design to 100 psf or higher. For comparison, a house in Idaho Falls is designed to roughly 30 to 40 psf. The Teton Valley number is two to three times that, and it shapes the whole structure, not just the roof.

I am Bryce Swager. Every SwagerBuilds home in Driggs, Victor and Tetonia carries stamped structural engineering sized to its lot. Here is what the number means for your plans and your budget.

What are the Teton County design numbers?

Requirement	Teton County, Idaho
Ground snow load, below 6,600 ft	85 psf + dead load + drift
Ground snow load, 6,600 ft and above	100 psf + dead load + drift
Frost depth	32 inches minimum from bottom of footing to finished grade; we design to 48 on most lots
Design wind speed	115 mph
Seismic design category	D-1
Code basis	2018 I-Codes

What does 85 to 100 psf do to my house?

It sizes everything below the roof. Trusses get heavier chords and tighter spacing. Ridge beams and headers over big view windows get deeper or go to steel. Bearing walls and posts carry the load to the foundation, which gets wider footings and more steel. A 100 psf roof on a 2,500 square foot home is carrying 125 tons of design load before drift. That is why a flatland plan set gets redlined here: the drawings have to be re-engineered, and the re-engineering usually adds structure the original plan did not have room for.

Drift is the part people miss. Snow slides off an upper roof and piles against a dormer, a lower roof plane, or a roof-to-wall intersection, and that pile can be two or three times the ground load. Every one of those spots gets its own calculation. Complex roofs with lots of intersections cost more to engineer and more to frame for that reason.

Does the snow load change the cost?

Yes, and it is already in the number. SwagerBuilds custom homes in Teton Valley start at $400 per square foot of interior living space for construction, and that starting point assumes Teton County engineering. Where the load shows up as extra cost is in choices: a simple gable roof over a rectangle is the cheapest structure to carry 100 psf; a cluster of dormers, a flat-roofed wing and a 20-foot glass wall each add engineering, steel and framing labor. Those are design decisions we price inside the design agreement, before the construction price is fixed. What is not in the $400 starting point is site work, permits, design, landscape and contingency, which add about 30 percent all-in. The full breakdown is in what a custom home costs in Idaho.

Who does the engineering, and do I have to hire them?

A licensed Idaho structural engineer stamps the drawings, and no, you do not go find one. SwagerBuilds coordinates structural engineering inside the design agreement with engineers we have worked with across Idaho for two decades. Engineering is billed at cost. Teton County also requires engineering on stone and masonry veneer and on wood-burning masonry fireplaces regardless of who drew the plans, and that is coordinated the same way. If you bring plans from an architect, we have them engineered to Teton County before they go to permit.

What should I ask a builder about snow load?

One question: “What snow load and drift assumption are you designing my roof to?” A builder who has built in Teton Valley answers with a number and an elevation. A builder who has not will need to get back to you. Then ask to see a stamped structural set from a recent Driggs or Victor build. The Teton Valley architect guide has the other nine questions.

Common questions

Is the snow load the same in Victor and Tetonia as in Driggs?

All three sit below 6,600 feet on the valley floor, so the prescriptive minimum is 85 psf plus dead load and drift. Lots on the bench or in the foothills on any side of the valley can cross 6,600 feet and move to 100 psf. The elevation on your lot, not the town, sets the number.

Can a site-specific calculation lower the number?

Sometimes, on a sheltered valley-floor lot. A licensed engineer can run a site-specific ground snow load instead of the prescriptive minimum. In practice the savings are small and most Teton Valley homes design to the county number.

Do I need a metal roof for the snow load?

No. The structure carries the load, not the roofing. Metal sheds snow faster, which changes where drift lands and where snow falls off, so it has to be planned around walkways, decks and propane tanks. Asphalt holds snow, which keeps the load on the roof but off the entry. Both are built here.

Building in Teton Valley?

Every SwagerBuilds home carries stamped engineering sized to its lot, coordinated inside the design agreement. Book a 15-minute planning call and bring your lot’s elevation.

What happens if my builder goes out of business mid-build? The house stops, the subs who have not been paid can lien your property, and you finish the home with a new builder at a higher price than the original contract. How bad it gets depends on three things you control before you sign: how the money is released, whether lien waivers come with every payment, and whether the plans, selections and pricing live somewhere you can hand to the next builder. Get those three right and a builder failure is a bad month. Get them wrong and it is a year and six figures.

I am Bryce Swager. I have finished homes that other builders walked away from, and I have structured my own contracts so that a client could replace me tomorrow without losing their money or their plans. Here is what actually happens and how to protect yourself.

What happens to the money I already paid?

Money the builder has already spent on your house is in your house. Money the builder collected ahead of the work is gone unless the contract and the lender controlled it. That is the whole game. On a construction loan, the bank releases draws against inspected progress, so a builder cannot be far ahead of the work. On a cash build, the owner has to run the same discipline: pay against completed, inspected work, never against a schedule of dates. A builder who asks for 30 percent up front on a $1.5 million home is asking you to finance his other jobs.

Deposits are different. A design fee buys plans you keep. A materials deposit for windows or trusses should be paid to the supplier or documented with the supplier’s order confirmation in your name, not sent to the builder’s operating account.

Can the subcontractors come after me?

Yes. Under Idaho’s mechanic’s lien law, a subcontractor or supplier who was not paid can lien your property even if you paid the builder in full. You can end up paying for the framing twice. The protection is a conditional lien waiver from every sub and supplier with every draw, and an unconditional waiver once the check clears. If your builder cannot produce lien waivers with a pay application, that is the single loudest warning you will get. Why it matters that your builder pays subs on time goes through the Idaho lien timeline.

Can I keep the plans and the pricing?

Only if the contract says so and the documents exist somewhere you can reach. Ask before you sign: who owns the drawings, where are the engineered plans stored, and where is the budget by cost code? On a SwagerBuilds build, the design agreement produces a stamped plan set you own, selections documented by room, and a construction budget by cost code with real subcontractor bids. All of it lives in your JobTread client portal, which you keep access to. A new builder could pick up that package and price the remaining work in a week. A builder who keeps the plans on his truck and the budget in his head leaves you starting from zero.

What does it cost to finish a house another builder started?

More than the original contract said it would. The new builder has to inspect everything already built, often open walls to verify what is behind them, take over warranties nobody will honor, and re-bid subs who are owed money and will not come back. Expect the remaining work to cost 15 to 30 percent more than the original builder’s number for the same scope, plus three to six months of lost time. That premium is why the prevention list below is worth more than any clause in the contract.

How do I protect myself before I sign?

1. Pay against work, not dates. Draws tied to completed, inspected milestones. No large upfront payment.
2. Lien waivers with every draw. Conditional with the pay application, unconditional after the check clears, from every sub and supplier.
3. You own the plans. Stamped drawings, selections and budget in a portal you control, written into the contract.
4. Fixed price after design lock. Cost-plus contracts are where distressed builders hide. A fixed price with a priced scope is harder to drain. Why I only sign fixed-price.
5. Watch the early signs. Subs disappearing, suppliers calling you, requests for early draws, the owner suddenly hard to reach. Seven signs your builder is in financial trouble lists them.
6. Daily visibility. A daily photo log and a live budget make it hard for a builder to be three draws ahead of the work without you noticing.

What should I do the week it happens?

Stop all payments. Photograph everything on site. Change the locks and secure materials. Pull the permit record and the inspection history from the county so you know what passed. Send written notice to every sub and supplier asking for a statement of what they are owed on your job. Call your lender. Then call a builder who has finished someone else’s house before, with your plans, your selections and your budget in hand. The faster the package is complete, the faster the new price comes back.

Common questions

Does Idaho have a contractor recovery fund?

No. Some states run a fund that pays homeowners when a licensed contractor fails. Idaho registers contractors but does not back them with a recovery fund, which is why the contract and draw structure carry all the protection.

Will my construction loan protect me?

Partly. The lender’s draw inspections keep the builder from getting far ahead of the work, and most lenders require lien waivers. The loan does not replace the money a builder collected outside the draw schedule, and it does not finish the house for you.

Can I sue the builder?

You can. Collecting is the problem. A builder who went out of business usually has nothing to collect from, and the judgment arrives after you have already paid to finish the house. Prevention is the only version of this that pays.

Want a contract you could hand to the next builder?

That is how every SwagerBuilds contract is built, on purpose. Book a 15-minute planning call and I will walk you through the draw schedule and the lien waiver process before you ever sign anything.

When do I need to start to be dried in before winter? Break ground by the end of June. Working backward from the dry-in date: framing and dry-in take three to four months, the foundation takes about a month, permitting in Teton County runs two to three months, and design runs 12 to 16 weeks. That puts the design agreement signature in the previous fall or winter, the permit in hand by May, and the excavator on site in June. Start later than that and you are choosing between a rushed shell and a foundation that sits under snow until spring.

I am Bryce Swager. Every SwagerBuilds home in Teton Valley and Eastern Idaho is dried in before winter, roof on and every window and exterior door installed. We do not pour foundations in winter. This is the calendar that makes that rule work.

What does “dried in before winter” actually mean?

Roof sheathing and underlayment on, roofing installed or at least weather-tight, wall sheathing wrapped, and every window and exterior door set and flashed. At that point the shell sheds weather and the inside can be heated. Plumbing, electrical, HVAC, insulation, drywall, cabinets, tile, trim and paint all happen inside that closed shell through the winter at normal pace. A house that is dried in before winter is a house that finishes on schedule. A house that is not loses weeks to snow removal, frozen materials and crews that cannot work.

What is the month-by-month calendar?

When	What happens	How long
Previous October to January	Design agreement: plans, engineering coordination, selections, subcontractor bids by cost code, fixed construction price	12 to 16 weeks
February to April	Permit submittal and review, HOA design review where the plat requires it, long-lead orders placed (windows, exterior doors, trusses, roofing)	2 to 3 months
May to June	Excavation, footings, foundation walls, waterproofing, backfill	About 1 month
July to October	Framing, roof, windows and doors, exterior wrap	3 to 4 months
December 1	Dried in. Shell closed, temporary heat on	Hard date
December to spring	Rough-ins, insulation, drywall, finishes inside the closed shell	5 to 7 months
Following spring to summer	Exterior finish, driveway, final grade, landscaping, final inspection, keys	1 to 2 months

The two dates that cannot move are the permit and the window order. A permit that lands in July instead of May pushes the foundation to August and the dry-in into November with no margin. A window package ordered after framing starts arrives in December. Both are design-agreement problems, which is why the design agreement comes first and includes the long-lead orders.

What if I am reading this in the fall?

You are on time for next year. Sign the design agreement this fall, finish design and selections over the winter, submit for permit in late winter, and break ground when the ground thaws. That is the normal path, not a delay. What you are not on time for is a foundation this year, and I would tell you that on the first call rather than sell you a winter pour. Why we do not pour concrete in winter covers the reasons.

What if I am reading this in the spring?

If your plans and permit are done, you are early. If you are starting from nothing in April, the math does not work for a before-winter dry-in this year: 12 to 16 weeks of design puts the permit submittal in August and the foundation in October at the earliest. The honest schedule is design through the summer, permit in the fall, foundation the following May. The alternative, which I see other builders offer, is a plan set thrown together in six weeks to chase a summer start. The house pays for that for 50 years.

What slips the schedule most often?

1. Lot closing. A lot that closes in June instead of March moves everything. Walk the lot with your builder before you write the offer.
2. HOA design review. Teton Springs, Teewinot and the Driggs subdivisions add 30 to 90 days. It belongs in the calendar from day one.
3. Selections. Every selection left open after design lock is a change order later and a delay now. Selections are finished inside the design agreement, not during framing.
4. Well and septic. Well permitting adds six to twelve weeks on rural lots and perc results can move the house. Scoped during design, not after.
5. Windows. The longest lead item on the job. Ordered the day the construction contract signs.

The full build timeline and the permit paths by county cover the rest of the schedule.

Common questions

Can we pour the foundation in October and still make the dry-in date?

Rarely, and I do not plan on it. A September pour leaves ten to twelve weeks to frame, roof and set windows, which is possible on a simple plan with the window package already on site. An October pour leaves six weeks. If the foundation is not in by the end of September, it waits for spring.

Does the dried-in-before-winter rule apply in Rigby and Idaho Falls too?

Yes. The valley floor has a longer open season than Teton Valley, so the foundation window runs into October, but the dry-in date is the same. Winter is for inside work everywhere we build.

When should I call a builder if I want keys in two years?

Now. Two years out is the comfortable version of this calendar: design this winter, permit and foundation next summer, dried in next December, keys the following summer.

Want your build mapped backward from the dry-in date?

Tell me where the lot is and when you want keys, and I will tell you on the call whether the dates work. Book a 15-minute planning call.

How do I find a builder experienced in new construction in Idaho? Start with three public records, not a Google ad: the Idaho contractor registration at DOPL, the county permit history for the builder’s name, and the builder’s own finished homes you can drive past. A builder who has pulled permits for ground-up homes in your county in the last three years, carries a current RCE registration, and can walk you through two completed houses is experienced in new construction. Anything short of that is a remodeler or a salesman.

I am Bryce Swager. SwagerBuilds builds custom homes in Teton Valley and Eastern Idaho, and this is the vetting I would run on myself if I were the buyer.

Where do I look first for new construction builders in Idaho?

Three places, in this order.

1. Idaho DOPL contractor registration. Every contractor doing work over $2,000 in Idaho has to be registered. The Idaho Division of Occupational and Professional Licenses lookup shows the registration number, the legal entity and whether it is current. Idaho registers contractors; it does not license them for competence, so this is a floor, not a credential. SwagerBuilds is RCE-57499.
2. County permit records. Teton, Jefferson, Bonneville and Madison counties all keep searchable building permit records. Search the builder’s company name. You are looking for new single-family residence permits, not re-roofs and decks. Three or more in the last three years in your county means they know that inspector and that plan reviewer.
3. Finished homes. Ask for two addresses of homes finished in the last two years and one that is under construction now. Drive past all three. Then ask to talk to the owner of one of the finished ones.

What separates a new construction builder from a remodeler?

Foundations, engineering and sequencing. A remodeler works inside a structure someone else engineered. A new construction builder has to get footings below frost, hold-downs where the engineer drew them, a roof carrying 85 to 100 psf of snow in Teton County, and the whole thing dried in before winter. The permit record tells you whether they have done that. So does one question: “What snow load are you designing my roof to?” A builder who has built here answers in a number. A remodeler changes the subject.

The second tell is the front end of the project. A new construction builder has a process for plans, engineering, selections and permits before a price exists. At SwagerBuilds that is the design agreement, and the construction price is fixed only after it. A builder who quotes a ground-up house from a phone call has not built many of them.

What questions prove a builder is experienced in new construction?

1. How many ground-up homes did you finish in the last three years, and in which counties?
2. Who does your structural engineering, and can I see a stamped set from a recent build?
3. What is your rule for getting a house dried in before winter, and what happens if the schedule slips past it?
4. Do you price fixed or cost-plus, and what has to happen before the price is fixed?
5. How do I see the job if I live out of state? Daily photos, cameras, a portal, or a phone call when you remember?
6. Can I talk to one owner whose build had a problem, and hear how it was handled?

The answers you want: a count and county names; a named engineer and a real drawing; a clear dry-in rule, not a shrug (ours is dried in before winter); fixed after a design agreement; JobTread daily logs and 24/7 cameras; and a name. The full version of this list, with the answers that should worry you, is in how to check a builder’s references and the Teton Valley builder comparison.

Does “licensed and insured” mean experienced?

No. Idaho registration costs under $100 and requires no exam, no track record and no minimum insurance beyond what the registration form asks for. Every builder in this state can say “licensed and insured.” It tells you they filled out a form. Ask for the certificate of insurance with you listed as certificate holder, and ask for general liability limits in writing. Then go back to the permit record, which is the only public proof that houses got built.

How do I find a builder if I live out of state?

The same three records work from anywhere, and most of my Driggs clients run them from Texas, California and Utah before we ever talk. Add one step: ask the builder how a remote owner follows the build. The answer should be specific. On a SwagerBuilds job you get a daily photo log from the on-site project manager, a live camera feed, a weekly recorded video walkthrough and every drawing, selection, invoice and change order in the JobTread portal. How remote-owner builds work covers it.

Common questions

Does Idaho license general contractors?

No. Idaho registers contractors through DOPL. Registration confirms the business exists and has filed; it does not test competence or verify experience. Public works and some specialty trades (electrical, plumbing, HVAC) are licensed separately.

How many finished homes should a builder be able to show me?

At least two finished in the last two years and one under construction now. Fewer than that, and you are the training project.

Is a bigger builder safer than an owner-run one?

Not by itself. What matters is who is accountable for your house and whether you can reach them. An owner-run builder with a project manager on site and a written process is often more reachable than a production builder’s rotating superintendent. Ask who answers the phone on your job.

Want to run this list on me?

Go ahead. RCE-57499, permits in Teton, Jefferson, Bonneville and Madison counties, 5.0 on Google from 10 reviews, and two finished Teton Valley homes you can drive past. Book a 15-minute planning call and I will give you the addresses.