Category: Cost & Budget

You have three numbers in front of you. One builder is meaningfully higher than the other two, and nobody will tell you straight why. Every builder in the running says the same words — quality, communication, craftsmanship — so the only thing that actually separates them on paper is price.

I’ve been in construction for 20 years and I build at the higher end of this market on purpose. So take my bias into account. But I’m going to give you the honest version, including the part where hiring the premium builder is the wrong call.

The cheaper bid usually isn’t cheaper. It’s less finished.

Here’s what almost nobody explains when you’re comparing quotes: the three numbers in front of you are not describing the same house.

A bid is only as real as the scope behind it. When a builder hasn’t finished the drawings, hasn’t priced the actual windows, hasn’t gotten a real number from a real excavator on your actual lot — the bid isn’t a price. It’s an opening position. The low number wins the job and the real number shows up later, one change order at a time.

The three most common ways that happens:

• Allowances set low. “Flooring allowance: $8/SF.” You pick flooring. It’s $14/SF. That difference isn’t a change order in your mind — it’s the builder’s estimate being wrong. It bills the same either way. Here’s how allowances actually work.
• Cost-plus with an optimistic estimate. The estimate isn’t a commitment. It’s a marketing document. You pay what it costs, plus a percentage of what it costs — which means the builder’s fee grows when your budget does. Why I only sign fixed-price.
• Exclusions you didn’t read. Site work, well and septic, driveway, landscape, retaining, engineering, utility trenching. Quietly excluded, and every one of them is real money on a mountain lot.

Twenty years of watching this play out is the reason I run the way I do. Most custom builds quietly bleed 20–40% over their contract number — and almost none of it is bad luck. It’s scope that was never nailed down.

So compare finished numbers, not bids

The only fair comparison is what the house costs when you have the keys. Ask every builder you’re interviewing the same four questions:

1. Is this number fixed, or is it an estimate?
2. If it’s fixed — fixed as of what? What has to be decided before it locks?
3. What is excluded from this number entirely?
4. On your last three finished projects, what was the final contract price versus the original?

Question four is the one that sorts the field. A builder who tracks that answer will give it to you in about ten seconds. A builder who doesn’t will change the subject.

What “premium” should actually buy you

Paying more is only worth it if the money buys something specific. If a builder charges a premium and can’t point to these, you’re paying for a logo.

• A price that stops moving. Not “we’ll try to hold it.” A fixed construction price after design lock, with the scope written down to the fixture.
• Zero allowances. Every selection priced before you sign, not guessed at and trued up later.
• Written change orders before work happens. Not a line item you discover on an invoice in month nine.
• Subs who get paid on time. The best framers, tile setters, and electricians in a valley this small work for the builders who pay on Fridays. That’s not a soft benefit — it’s who shows up on your job. It also means no lien risk landing on your title.
• Documentation you can see without asking. Daily photo logs from the on-site project manager. A weekly recorded video walkthrough with budget, schedule, and the next decision in front of you.
• One accountable owner. Someone whose name is on the company, not a rotating project coordinator.

That list is my whole argument. Everything I charge above the cheaper bid goes into systems that make those six things true — and those systems cost money to run.

The cost nobody puts in the bid: your hours

Almost every client I sign is an attorney, an engineer, or an executive. For them the real comparison isn’t builder A versus builder B. It’s what the build costs in their own time.

A loosely-run build turns you into the project manager. Selections you’re chasing. Subs calling you directly. Decisions landing on a Tuesday afternoon that need an answer by Wednesday morning. Multiply that by 14 to 18 months. If your time bills at a professional rate, or if it’s the only time your kids get, the “savings” on the cheaper bid can disappear inside the first six months.

My build runs on a schedule of 7–8 decision meetings, set in advance, with everything prepared before you sit down. That’s the entire point of building for busy professionals — you keep working, and I run the build.

How much experience should your builder have?

Years alone aren’t the metric — plenty of builders have run the same loose process for two decades. What you’re actually testing for:

• Time in this climate. Snow load engineering at 60–100+ psf, frost depth, seasonal build windows, and what a Teton Valley winter does to a schedule are not transferable skills. A great valley-floor builder is a beginner up here.
• Finished projects at your size. A builder whose largest completed home is half your square footage is learning on your money.
• Financial stability. Ask how they’re capitalized and how fast they pay subs. An undercapitalized builder uses your deposit to finish the last client’s house, and that’s how jobs stall.
• A real portfolio. Actual photos of actual builds with real addresses and real client names — not stock imagery. Here’s mine.

When a premium builder is the wrong call

I’d rather tell you this now than take a deposit from someone I’m a bad fit for.

• You want to be your own GC and you actually have the time. If you’re on site daily, know the trades, and enjoy it, you can save real money. Most people who plan on this discover by month three that they don’t have the hours.
• You’re building a straightforward spec-grade house on a flat, serviced lot. A good production builder will do that faster and cheaper than I will, and there’s no shame in it.
• Your budget is genuinely tight. A fixed price on a tight budget means a smaller or simpler house. If the numbers only work on the optimistic bid, they don’t work.
• You want to make selections as you go. My process requires decisions locked before construction. If you want to decide the primary bath in month eight, cost-plus is an honest fit for you — just go in knowing what that does to the budget.

The numbers, on the record

Most builders won’t publish anything. Here’s where I start.

• Teton Valley and Eastern Idaho: construction starts at $400 per square foot of conditioned space and goes up. Conditioned space only — no padding the number with garage and covered porch square footage.
• Jackson Hole and the Wyoming side: starts at $1,000 per square foot and goes up. Different labor market, different jurisdiction, different number. Don’t let anyone quote you the Idaho figure for a Wyoming lot.
• All-in adds about 30% on top of construction — site work, permits, design and engineering, landscape, and furnishings.

Worked example, Idaho side: a 2,500 SF home is roughly $1M of construction, and roughly $1.3M all-in. That’s the honest shape of it. Your actual number depends on your lot, your plan, and your finish level — which is what the design agreement exists to determine. I don’t give project budgets before that, because a number pulled out of the air isn’t a favor to you. It’s how people end up 30% over.

More detail: what a custom home costs in Idaho and the Teton Valley breakdown.

The short answer

A premium builder is worth it when the premium buys a fixed price, a written scope, documented change orders, subs who get paid, and a process that protects your calendar. It is not worth it when it buys a nicer brochure.

Next step once you have numbers in hand: why three custom home bids don’t compare, and how to level them.

Test for the first list. If a builder charging more can’t demonstrate every item on it, go with the cheaper bid and save your money.

Frequently asked questions

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Want to test me against the list?

Book a 15-minute planning call. Bring the other bids. I’ll tell you what’s missing from them, including when the answer is that the other builder is the better fit for you.

— Bryce Swager, owner and lead builder, SwagerBuilds. Rigby, Idaho. Building custom homes across Teton Valley and Eastern Idaho.

Related reading

• 10 questions to ask before hiring a Teton Valley custom home builder
• Cost-plus vs fixed-price contracts (and why I only sign fixed-price)
• Why custom home builds run behind schedule in Idaho
• How I build — the six-stage process

Setting a budget for a Teton Valley custom home is not the same question as asking what one costs. Cost is a number a builder gives you at the end of design. A budget is what you need lined up before you start — in the right order, at the right time, with the right amount held back. Those are different problems, and getting the second one wrong is what stalls projects at framing.

This is the sequencing side. If you want the cost side — what a build runs and what a per-square-foot quote leaves out — that’s my guide to the cost to build a custom home in Teton Valley.

What should I budget for a Teton Valley custom home in 2026?

The budget for a Teton Valley custom home breaks into four buckets. Construction, the lot, design, and reserve.

Construction starts at $400 per square foot of conditioned space — heated, enclosed living area, with no garage or covered-porch padding in the denominator. A 2,500 square foot home at the entry point is about $1M. Add about 30% for land improvements, permits, design, contingency and financing carry and you’re at roughly $1.3M to be in the door. Most SwagerBuilds projects land in the $1M–$5M range once everything is counted.

Where you land above the entry point comes down to your lot, your architecture and your finishes. I don’t publish a tier chart, because charts like that look precise and aren’t — two houses at the same size and the same finish level can differ by several hundred thousand dollars purely on what the lot demands.

How much do I set aside for the lot itself?

The lot price is a real estate question, not a construction question, and I’m not going to invent a number for it — your agent has current comps and they move faster than any article. What I can tell you is what the lot does to the rest of the budget for a Teton Valley custom home after you buy it, which is the part buyers underestimate.

A serviced lot inside Driggs or Victor city limits with power at the road and city water and sewer available is the cheapest lot to build on, whatever it costs to buy. A rural parcel is where the money hides:

• Site work — clearing, excavation, driveway and approach: $80K–$250K depending on the parcel.
• Well and septic — where there’s no city service. Tetonia parcels often need deeper wells than Driggs.
• Power run — priced by distance to the nearest pole. A few hundred feet is a real line item.
• Snow access — a long driveway is a build cost once and a plowing cost every winter after.

Those are market figures for the valley, not my rate card. The practical version: walk the lot with a builder before you write the offer, not after. I’ll do that with you at no charge, and I’d rather tell you a parcel is going to eat $200K in site work while you can still walk away from it.

What does the design phase cost, and when do I pay it?

First, and separately from construction. The design agreement is a paid deliverable with a fixed fee quoted per project. It runs 12–16 weeks and produces plans, stamped engineering, locked selections, real subcontractor bids, lot feasibility, and a preliminary construction budget in the schematic phase.

You are not out hiring a team before that. Plan development and architectural drawings are coordinated in-house with same-week revisions. Structural, civil and mechanical engineers are people I’ve worked with for twenty years. Interior selections — cabinetry, millwork, lighting, tile — run on the same schedule. Permitting through Teton County or the City of Driggs is mine to run.

The fixed construction contract price comes at the end of that process, not before it. I don’t put a project budget in writing before a signed design agreement — not to be cagey, but because a number produced without your lot, your plans and real bids behind it isn’t worth anything, and you’d be right to hold me to it later.

What’s the reserve nobody tells you about?

Every budget for a Teton Valley custom home needs one line most people leave out. Carry 5–10% of the project in an owner reserve you never plan to spend. On a $1.3M all-in project that’s $68K–$135K sitting in an account doing nothing.

This matters even on a fixed-price contract, and people get this backwards. A fixed price protects you from the builder’s cost overruns — if lumber moves, that’s mine. It does not protect you from yourself. Every reserve I’ve watched get spent went to owner-driven changes: you see the great room framed and want the window bigger, you fall for a tile that’s double the allowance, you decide mid-build that the basement should be finished after all. Those are legitimate decisions and they cost money. Budget for the version of you who is standing in the house.

When does the money actually leave my account?

Roughly in this order, over 18 to 30 months from first conversation to move-in:

1. Lot purchase — cash or a lot loan, before anything else.
2. Design agreement fee — up front, 12–16 weeks of work.
3. Permits and impact fees — $15K–$30K in the valley, paid at submittal. One local quirk: Teton County caps personal cheques at $5,000, and a full custom home permit almost always exceeds that.
4. Construction draws — monthly against completed work, 10–16 months.
5. Landscape and FF&E — after close, and routinely forgotten. Landscape past rough grade runs $30K–$200K and up; furniture is six figures on a luxury home.

If you’re financing, a construction loan converts to a mortgage at completion and you carry interest on the drawn balance the whole way. That carry is part of the budget for a Teton Valley custom home and it belongs in the about 30% uplift, not as a surprise in month nine.

What can I cut if the number comes back too high?

If the budget for a Teton Valley custom home comes back above what you can carry, there are three levers, in the order that gives you the most money back per unit of regret:

1. The window package. A high-quality standard window versus a custom European steel unit moves a build by several hundred thousand dollars on its own. Cut here first.
2. Square footage. Cheaper than downgrading finishes, and you feel it less. Five hundred square feet you don’t build is $200K you don’t spend at the entry point.
3. Phasing. Rough in the basement and finish it in three years. Landscape in stages. Neither costs much more later and both move real money out of the critical budget.

What I’d cut last is the envelope and the structure. Insulation, air sealing, windows and snow-load framing are what make a house cheap to heat at 6,200 feet, and they’re the one category you cannot go back and fix without tearing something apart. Cost per square foot to build in Teton Valley covers how to keep competing quotes honest while you’re making these calls.

What local rules affect the budget?

Teton County, Idaho enforces the 2018 I-Codes family through the Building Department in Driggs and publishes a residential fee estimator you can use before you commit (tetoncountyidaho.gov). Idaho’s adopted energy code is the 2018 IECC with state amendments (Idaho DOPL adopted codes).

The one that catches people is design review. Many valley subdivisions run their own boards on top of county permitting, with written standards on materials, roof pitch, colours and outbuilding placement. Review can add 30–90 days. That’s schedule, and on a financed build schedule is money. The Driggs custom home builder page goes through permitting and snow-load engineering in detail.

Frequently asked questions

What should I budget for a Teton Valley custom home in 2026?

Construction starts at $400 per square foot of conditioned space. A 2,500 square foot home is about $1M in construction and roughly $1.3M all-in before land, plus a fixed design fee and a 5–10% owner reserve. Most projects land in the $1M–$5M range once everything is counted.

How much should I hold in reserve on a fixed-price build?

5–10% of the total project, held by you. A fixed price protects you from the builder’s overruns, not from your own mid-build changes — and owner-driven changes are what the reserve actually gets spent on.

Do I need to buy the lot before I talk to a builder?

No, and you shouldn’t. Site work on a rural Teton Valley parcel runs $80K–$250K and the lot decides most of that. I’ll walk a parcel with you before you write an offer at no charge, so the site cost is a known number rather than a discovery.

Get a number you can build a budget around

If you’re trying to set a budget for a Teton Valley custom home and you want it checked against a real lot and a real scope, the next step is a 30-minute planning call. Bring the parcel, the rough size you have in mind, and your timeline. You’ll get a straight yes or no on whether the budget carries the vision — no follow-up loops. If you’d rather read what past clients say first, the reviews page has all nine of them.

Or call me direct: (208) 520-0636.

Bryce Swager, Founder — 20-year Rigby custom home builder, 4th-generation local. BuildZoom score 94. Idaho contractor registration RCE-57499.