SwagerBuilds LLC · 4510 E 168 N, Rigby, ID 83442 · (208) 520-0636

Author: Bryce Swager

  • Home Addition Cost in Rigby, ID — Bump-Out, Master Suite, Second Story

    A home addition in Rigby, ID runs $275–$550 per square foot of new footprint in 2026, with master-suite additions typically landing between $180K and $425K and second-story pop-tops running higher due to structural work below. Timeline: 5-10 months from permit to final.

    Home Addition in Rigby — What You’re Actually Buying

    Small farming town 15 minutes north of Idaho Falls — that’s the setting. Rigby land still runs a fraction of what Teton Valley demands. That gap is why locals build here and TV commuters keep sliding down the 33. Climate matters here: cold-dry winters, 5,000 ft elevation, real snow load but nothing like the pass. And the permit path runs through Jefferson County Planning & Zoning — a straightforward process compared to Teton County ID. Any home addition you plan here has to answer for all three.

    We build shops and additions for both Eastern Idaho locals here in Rigby and for Teton Valley absentee owners who want the same crew we’re running up in Driggs. That matters for how we schedule and communicate — the same JobTread logs, weekly video walkthroughs, and written change orders run for the guy 15 minutes down the road and the owner watching from a laptop in San Francisco.

    What Does a Home Addition Cost in Rigby?

    Additions in Rigby run $275 to $550 per square foot of new footprint in 2026. That includes foundation, framing, mechanical extension, finishes, and tie-in work to the existing house. The tie-in work is where costs jump — you’re cutting into an existing envelope, matching a roofline, extending mechanical systems that were sized for the original house.

    Sample Rigby Addition Ranges

    • 400 sq ft bump-out (mudroom, dining nook): $110K-$220K
    • 600-800 sq ft master suite addition: $180K-$425K
    • Second-story pop-top (1,000-1,400 sq ft): $450K-$775K
    • ADU / guest quarters (separate entrance, kitchenette, bath): $250K-$500K

    Bump-Out vs Master Suite vs Second Story — Which Fits Rigby?

    Depends on your lot and your house. Bump-outs work when you have setback room and just need a few hundred more square feet. Master suite additions are the highest-ROI move in Rigby — the primary bath in most 1990s-2010 homes here is undersized by 2026 standards, and clients regularly recover 60-75% of an addition budget in resale. Second-story pop-tops are the answer when the lot is tight — Rigby has plenty of infill lots where up is the only direction.

    Cold-climate detail matters here. Cold-dry winters, 5,000 ft elevation means the tie-in has to be airtight or you’ll be chasing ice dams and drafts for years. I spec a proper WRB, sealed air barrier, and continuous exterior insulation on every addition.

    Building from out of state?

    Most of the owners we build for don’t live here. California, Colorado, Washington, Jackson second-home owners — they see the build through JobTread, not from a truck. Daily photo logs, weekly video walkthroughs, on-demand FaceTime tours, every dollar visible in real time. Site visits are optional, not required. Here’s how our remote-owner clients monitor their build without flying in.

    How the Home Addition Process Runs in Rigby

    Every SwagerBuilds addition runs the same six-stage process. Consult, planning, contract, build, punch, warranty. Nothing skipped, nothing hidden. You watch the whole thing through JobTread — daily photo logs, all cost detail, written change orders that require your approval before a dollar moves.

    Timeline for Rigby: 5-10 months. That’s from contract signature to punch list complete, assuming permits move on standard Jefferson County timelines. Weather delays get logged. Change orders get logged. Anything that shifts the schedule gets a written note explaining why.

    Why Fixed-Price Matters in Rigby

    Cost-plus contracts are the most common way Rigby owners get burned. The builder starts the job at $250K, and by month six it’s $380K because “materials moved” or “the plumbing was worse than expected.” Fixed-price contracts flip that dynamic. I do the discovery work up front — pre-demo inspection, wall opens where needed, mechanical assessment — and I price the whole scope before I ask you to sign.

    Twenty years watching budgets blow up in this valley taught me that transparency is the only real defense. Every SwagerBuilds contract is fixed-price, no allowances. Every change order is written and approved before it costs a dollar. Every day, you can log into JobTread and see exactly where your money went.

    What Makes Rigby Home Additions Different

    Rigby’s climate is Eastern Idaho standard — cold winters, dry air, real snow load. Wall assemblies, roof detailing, mechanical sizing — everything has to answer. A generic addition spec written for a mild coastal market will fail here within five winters. I’ve seen every way a build goes sideways when the spec came from somewhere else. I’m a 4th-generation Rigby builder — SwagerBuilds is headquartered at 4510 E 168 N.

    What Can Go Wrong on an Addition in Rigby?

    Three common failures. Foundation tie-in done wrong — the new footing settles at a different rate than the old, and you get cracked drywall at the seam within two winters. Roofline transition done wrong — water finds the tie-in and you’re chasing leaks and ice dams for years. Mechanical undersized — the old furnace or hot water heater can’t cover the new addition.

    The fix: proper foundation engineering that accounts for existing structure. Roofline tie-in detail drawn by an architect, not sketched by the framer on the job. Mechanical load calculation before contract signature, not after.

    ADU vs Addition in Rigby — Which One Fits?

    Depends on what you want to do with the space. An ADU is a separate legal dwelling with its own kitchen, bath, and entrance — great for rentals, in-law suites, or resale premium. An addition is an extension of your primary residence. In Rigby, ADUs run higher per square foot because of the separate mechanical, water and sewer connections, and (usually) separate electrical service. Additions run cheaper per square foot because they piggyback on existing systems.

    Second-Story Pop-Tops in Rigby

    Pop-tops are the answer when the lot is tight. In Rigby, we see these most often on infill lots and older neighborhoods where setbacks make horizontal additions impossible. The catch: pop-tops require full structural analysis of the existing foundation and load-bearing walls, often reinforcement or replacement of both, and complete removal of the existing roof. That’s why they run $450K-$775K for 1,000-1,400 sq ft.

    Frequently Asked Questions

    How much does a master suite addition cost in Rigby?

    $180K-$425K for a 600-800 sq ft master suite addition in Rigby in 2026.

    How long does an addition take?

    Five to ten months from permit to final. Bump-outs run five to seven. Master suites and second-story additions run seven to ten.

    Do I need to move out during an addition?

    For bump-outs and master suites: usually not. For second-story pop-tops: yes, typically three to five months because the roof has to come off.

    Will an addition ruin the look of my house?

    Not if it’s designed right. My rule: match the roofline, match the siding, match the trim detail. If you can’t match, you have to intentionally contrast. Nothing in between.

    Related guides:

    Ready to Talk About Your Home Addition in Rigby?

    Here’s how this works. Book a 15-minute planning call. Free. No commitment. We talk through what you want, the existing house, the budget you’re working with, and whether SwagerBuilds is the right fit. If it is, I write you a proposal. If it isn’t, I tell you that too. Twenty years in this valley — I don’t need to sell you something that doesn’t work.

    — Bryce Swager, 4th-generation Rigby builder

    Book a 15-minute planning call →

  • Detached ADU vs Attached ADU in Driggs — Which One Makes Sense?

    In Driggs, a detached ADU runs $290–$525/sf and rents for 30–45% more than an attached unit. An attached ADU saves 15–25% on build cost and permits faster. Detached wins on rental income and resale. Attached wins on speed, cost, and multi-gen use cases. Here’s how to pick.

    What’s the difference in Driggs?

    A detached ADU is a stand-alone structure — its own foundation, walls, roof, address for guests. An attached ADU shares at least one wall with the main house (garage conversion, basement suite, addition off the back). In Driggs city and unincorporated Teton County Idaho, both are allowed under the accessory dwelling unit ordinance, but they hit different setback rules, different septic reviews, and different STR treatment.

    Pros — Detached ADU in Driggs

    • Higher rental income. Guests want privacy. A standalone cabin in your backyard rents for $175–$285/night in peak season. An attached unit rents for $110–$180.
    • More resale flexibility. Detached ADUs are viewed as separate income assets by appraisers — you get more of the build cost back.
    • Cleaner exit. If you sell someday, some buyers subdivide, some rent it out, some use it as a guest house. Detached gives all three options.
    • Better for STR. Multiple STR platforms rate detached higher, and cleaning turnover is easier when guests aren’t walking through your mudroom.
    • Doesn’t touch your main house. No dust, no disruption during build — you keep living normally.

    Cons — Detached ADU

    • Costs 15–25% more per square foot. New foundation, new roof system, new mechanical spine, separate utility runs.
    • Eats yard. A 20×40 footprint plus setbacks and driveway pull removes 1,200–2,000 sf of usable yard.
    • Longer permit review. Full new structure permit vs. addition permit.
    • Utility infrastructure. Might need a new water line, dedicated propane, sub-meter — $8k–$22k.

    Pros — Attached ADU (Addition, Basement, or Garage Conversion)

    • Lower cost. Shared foundation, shared roof, shared mechanicals — typically 15–25% less per square foot.
    • Faster permit. 4–8 weeks vs 10–16 weeks for detached in Teton County ID.
    • Better for multi-gen. If Grandma’s living in it, being connected is a feature not a bug.
    • Doesn’t eat yard. Especially garage conversions — you use footprint that already exists.
    • Easier to heat. Shared mechanicals means one system, not two — real savings in Driggs winters.

    Cons — Attached ADU

    • Lower rental income. STR guests pay less for a unit connected to the owner’s house.
    • Sound bleed and privacy. Shared walls need real insulation and design attention, or every conversation crosses.
    • Disrupts main house during build. Especially basement conversions — you live through construction.
    • Lower appraisal recovery. Attached ADUs typically recover 55–70% of build cost vs 70–85% for detached.

    Cost Breakdown — Driggs 2026

    Detached ADU, 750 sf:

    • Foundation + site: $34,000–$52,000
    • Framing + roof: $52,000–$78,000
    • Mechanicals: $45,000–$68,000
    • Interior finishes: $52,000–$92,000
    • Exterior finishes: $40,000–$62,000
    • Utilities + septic: $10,000–$38,000
    • Permits + design: $9,000–$16,000
    • Overhead + contingency: $30,000–$48,000
    • Total: $272,000 – $454,000

    Attached ADU (addition or basement), 750 sf:

    • Site + tie-in: $12,000–$28,000
    • Framing + tie-in roof: $32,000–$52,000
    • Mechanicals (tie-in): $28,000–$48,000
    • Interior finishes: $48,000–$85,000
    • Exterior finishes: $22,000–$38,000
    • Utilities: $4,000–$12,000
    • Permits + design: $6,500–$12,000
    • Overhead + contingency: $22,000–$38,000
    • Total: $174,500 – $313,000

    Garage conversions come in lower still — $135k–$220k typical — because the shell already exists.

    Permitting in Driggs

    Inside Driggs city limits, ADUs are handled through the city planning office with setback minimums (typically 5′ side, 10′ rear for detached accessory structures) and a max lot coverage rule that catches people on infill lots. Unincorporated Teton County ID applies the accessory dwelling ordinance with different setbacks by zone.

    Detached in Driggs: 10–16 weeks permit review. Attached: 4–8 weeks (basement conversion runs at the low end, garage conversion mid, addition at the high end because of exterior wall changes triggering full envelope review).

    Future Value — 10-Year Comparison

    Rough 10-year math for Driggs:

    • Detached ADU, $340k build, $42k/yr gross rent: Net $28k/yr after expenses = $280k over 10 years, plus ~$255k appraisal bump. Total ~$535k on $340k investment.
    • Attached ADU, $225k build, $26k/yr gross rent: Net $17k/yr after expenses = $170k over 10 years, plus ~$150k appraisal bump. Total ~$320k on $225k investment.

    Detached wins on total return if you’re going to rent. Attached wins on ROI percentage and cash-flow risk if you’re using it for family.

    When Each One Makes Sense

    Go detached if: STR is your goal, you have lot area, you don’t want a shared wall with a tenant, and resale flexibility matters.

    Go attached if: it’s for family, you’re on a tight lot, budget is the constraint, or you’re converting a basement/garage that’s already partially wired.

    Not in town every week? We build ADUs for owners in California, Colorado, Utah, and out east all the time. Real-time JobTread dashboard, weekly photo updates, no surprises. Here’s how remote owners run their ADU project.

    How SwagerBuilds Handles the Decision

    Before we quote either version, we walk your lot, check the septic system, review your zoning, and price both scenarios so you’re not choosing on assumption. Fixed-price contracts. No allowances that shift the number later. JobTread login so you see the same schedule and budget I do. Twenty years in Driggs means we’ve done both dozens of times — we know which sub-crews handle attached tie-ins cleanly and which framers cost too much on small detached foundations.

    FAQ

    Can I short-term rent an attached ADU in Driggs?

    Yes if your zone allows STR generally. Attached vs detached usually doesn’t affect the permit itself.

    Does an attached ADU need a separate address?

    Not required, but many owners set up a Suite/Unit B designation for USPS and STR listings.

    Can I convert my Driggs garage into an ADU?

    Yes if the garage meets setback and you don’t fall below required parking. Full insulation upgrade, egress windows, and separate HVAC needed.

    Which appraises higher, attached or detached?

    Detached typically. Appraisers treat it more like an income asset.

    Timeline difference?

    Attached: 5–7 months build. Detached: 6–9 months build. Permit adds 4–16 weeks depending on type.

    Which One Should You Build?

    Send me your Driggs lot and a rough idea of what you’re trying to do. I’ll price both and tell you honestly which one wins on your specific parcel. Start here.

    Related: ADU Cost, Permits + ROI in Teton Valley (pillar) · ADU Rental Income in Jackson + Victor · Complete Guide

  • Whole Home Remodel in Teton Valley, ID — Fixed-Price Cost, Scope, Timeline (2026)

    A whole home remodel in Teton Valley, ID runs $250–$600 per square foot in 2026 depending on how much you take back to studs, how much mechanical you replace, and finish level. A 3,000 sq ft gut renovation typically lands between $750K and $1.6M. Timeline: 6-14 months from demo to move-in.

    Whole Home Remodel in Teton Valley — What You’re Actually Buying

    The whole Idaho side of the Tetons — Driggs, Victor, Tetonia, Felt, plus Alta on the Wyoming line. The valley pulls buyers from Jackson, California, Colorado, and Washington. 2025 valley-wide median cleared $1.1M and shows no sign of dropping. Climate matters here: high-mountain — 6,000-6,500 ft valley floor, 100+ inch snow years, subzero cold, wind exposure across the flats. Permit path: Teton County ID Planning — design review and neighborhood covenants both apply to most builds. Any whole home remodel here has to answer for all three.

    Almost every Teton Valley owner we build for lives somewhere else — Jackson, Bay Area, Denver, Seattle. The build runs without you on site.

    What Does a Whole Home Remodel Cost in Teton Valley?

    A whole home remodel in Teton Valley in 2026 runs $250 to $600 per square foot. The range depends on how far you take it back — cosmetic refresh, gut renovation, or gut plus mechanical replacement plus layout changes. A 3,000 sq ft home taken to studs and rebuilt: $750K to $1.6M. That’s the honest number for Teton Valley right now.

    Sample Teton Valley Whole-Home Remodel Ranges

    • Cosmetic-plus (paint, floors, kitchen, primary bath, no layout changes): $250K-$450K
    • Mid-scope gut renovation (all baths, kitchen, mechanical partial): $500K-$1.1M
    • Full gut to studs (new mechanical, layout changes, exterior work): $750K-$1.6M+
    • Historic-preservation-level restoration: $1.2M+

    When Does a Whole Home Remodel Beat a New Build in Teton Valley?

    Three scenarios. One: the lot is irreplaceable — a view lot in Teton Valley that you’d never find again. Two: the existing envelope has structural bones worth keeping and the layout just needs to be cut and re-plumbed. Three: you own free-and-clear and the tear-down-plus-build number crosses $1.5M for a house you’d otherwise buy for $900K on the same lot.

    The scenarios where a remodel loses: foundation failure, radical layout changes that require moving structural walls, mechanical systems 40+ years old with knob-and-tube wiring. At that point you’re rebuilding around a shell you’re paying to save.

    Building from out of state?

    Most of the owners we build for don’t live here. California, Colorado, Washington, Jackson second-home owners — they see the build through JobTread, not from a truck. Daily photo logs, weekly video walkthroughs, on-demand FaceTime tours, every dollar visible in real time. Site visits are optional, not required. Here’s how our remote-owner clients monitor their build without flying in.

    How the Whole Home Remodel Process Runs in Teton Valley

    Every SwagerBuilds whole home remodel runs the same six-stage process. Consult, planning, contract, build, punch, warranty. Nothing skipped, nothing hidden. You watch the whole thing through JobTread — daily photo logs, all cost detail, written change orders that require your approval before a dollar moves.

    Timeline for Teton Valley: 6-14 months. That’s from contract signature to punch list complete, assuming permits move on standard Teton County ID Planning timelines. Weather delays get logged. Change orders get logged. Anything that shifts the schedule gets a written note explaining why.

    Why Fixed-Price Matters in Teton Valley

    Cost-plus contracts are the most common way Teton Valley owners get burned. The builder starts the job at $600K, and by month six it’s $1.1M because “materials moved” or “the plumbing was worse than expected.” Fixed-price contracts flip that dynamic. I do the discovery work up front — pre-demo inspection, wall opens where needed, mechanical assessment — and I price the whole scope before I ask you to sign.

    Twenty years watching budgets blow up in this valley taught me that transparency is the only real defense. Every SwagerBuilds contract is fixed-price, no allowances. Every change order is written and approved before it costs a dollar. Every day, you can log into JobTread and see exactly where your money went.

    What Makes Teton Valley Whole-Home Remodels Different

    Climate. Wall assemblies, roof detailing, mechanical sizing — everything has to answer for high-elevation snow, subzero cold, and pass wind. A generic remodel spec written for a mild coastal market will fail in Teton Valley within five winters. I’ve seen every way a build goes sideways when the spec came from somewhere else.

    The other Teton Valley factor: labor. Skilled trades here are booked. If you sign a contract with a builder who doesn’t have committed subs, you’re going to sit in schedule slippage. My electricians, plumbers, HVAC crew, and finish trades work on SwagerBuilds jobs on a rotating committed schedule.

    What Can Go Wrong on a Whole Home Remodel in Teton Valley?

    Three failure modes. Owner signs cost-plus and watches the number climb from $600K to $1M with no ceiling. Owner skips the pre-demo assessment and gets hit with foundation, mechanical, or structural surprises that eat 20% of the budget. Owner picks a builder who’s never done a full gut in Teton Valley climate — the wall assembly, air barrier, and mechanical spec don’t hold up, and the remodeled house performs worse than the original.

    The fix: fixed-price contract with no allowances. Full pre-demo assessment with wall opens, foundation inspection, mechanical assessment before contract signature. Climate-correct wall assembly with continuous exterior insulation, sealed WRB, proper air barrier — all standard on every SwagerBuilds gut renovation.

    Whole Home Remodel vs Tear-Down and Rebuild in Teton Valley?

    The math tips depending on your lot, envelope, and target. Keep the existing shell when the foundation is sound, structural bones work, and the lot is expensive or view-critical. Tear down when the foundation is compromised, the layout requires moving all load-bearing walls, or you can rebuild for less than 130% of the remodel number.

    In Teton Valley specifically, land pricing matters. If the lot is worth $600K and the existing house is worth $200K, a $1.2M remodel might not beat a $1.4M tear-down-and-build. If the lot is worth $150K and the existing house is worth $400K, remodel almost always wins.

    Living Through a Whole Home Remodel in Teton Valley?

    For full gut renovations, most owners move out for the duration. For our out-of-state and Jackson clients, that’s not a factor — they weren’t living there in the first place. Trying to live through a gut renovation almost always ends badly.

    Frequently Asked Questions

    How much does a whole home remodel cost in Teton Valley?

    $250-$600 per square foot in Teton Valley in 2026. A 3,000 sq ft gut renovation runs $750K-$1.6M.

    How long does a whole home remodel take?

    Six to fourteen months from demo to move-in. Cosmetic-plus runs four to six. Full gut runs eight to fourteen.

    Do I need to move out during the remodel?

    For a full gut: yes. Most owners move out for the duration.

    What’s the difference between fixed-price and cost-plus?

    Fixed-price means one number, signed at contract, that covers the full scope. Cost-plus means the builder charges cost of materials and labor plus a percentage — no cap. I only write fixed-price contracts.

    Related guides:

    Ready to Talk About Your Whole Home Remodel in Teton Valley?

    Here’s how this works. Book a 15-minute planning call. Free. No commitment. We talk through what you want, the existing house, the budget you’re working with, and whether SwagerBuilds is the right fit. If it is, I write you a proposal. If it isn’t, I tell you that too. Twenty years in this valley — I don’t need to sell you something that doesn’t work.

    — Bryce Swager, 4th-generation Rigby builder

    Book a 15-minute planning call →

  • ADU Cost, Permits, and ROI in Teton Valley — Complete Pros and Cons

    An ADU in Teton Valley runs $275–$525 per square foot finished, takes 10–20 weeks to permit through Teton County ID, and — built right in a rentable zone — can return $28k–$55k a year in gross rent while adding 70–85% of its cost to appraised value. That’s the honest math from 20 years of local builds.

    What is an ADU in Teton Valley?

    An Accessory Dwelling Unit is a second, independent living space on your property — kitchen, bathroom, sleeping area, its own entrance. In Teton Valley, that shows up three ways: a detached unit (little cabin behind the main house), an attached unit (in-law suite off the main structure), or a garage conversion (bay above or beside a shop).

    Teton County Idaho allows one ADU per residential parcel by right in most zones, subject to setbacks, septic capacity, and — this is the one people miss — the short-term rental overlay for your specific area. Driggs, Victor, Tetonia, and unincorporated county each handle STR differently. If rental income is why you’re building, that check happens on Day One, not Day 90.

    Pros of Building an ADU in Teton Valley

    • Rental demand is real and year-round. Jackson Hole spillover, Grand Targhee winter, summer national park traffic. A permitted STR ADU in the right zone stays 70%+ occupied.
    • Multi-generational housing. Aging parents, adult kids, seasonal workers — an ADU solves a housing math problem that Teton Valley is short on across the board.
    • Adds appraised value. On average we see 70–85% of ADU build cost recovered in appraisal. Higher if it’s legally rentable, lower if it can’t be.
    • Cheaper per square foot than a new home. No new well, no new driveway, no new septic (usually), and you share the utilities — real savings.
    • Flexibility down the road. Sell the main house, live in the ADU. Kid moves out, rent it. Divorce, income property. An ADU has more life-stage options than any other structure you can build.
    • The valley needs the housing. Not a financial pro, but worth saying — every legal ADU in TV is one less local commuting from Idaho Falls.

    Cons — The Honest Version

    • Septic capacity kills more ADU plans than any other single issue. If your existing system is undersized, you’re looking at a full septic upgrade — $18k–$45k on top of the ADU itself. Get a percolation test and system review BEFORE you fall in love with a floor plan.
    • Utility separations are expensive. Sub-metering electric, running a separate water line, dedicated propane — add $8k–$22k.
    • The STR rules are moving targets. What’s legal today may not be legal in 3 years. Building an ADU for rental income only, in a zone where STR is contested, is a bet.
    • You give up yard. A detached ADU eats 400–1,200 sf of your lot. On a small parcel, that changes the feel.
    • Insurance and property tax both go up. Plan for a 15–25% property tax bump and $600–$1,400 more per year on insurance.
    • Permit timeline is real. 10–20 weeks in Teton County ID, longer if you’re in an HOA. Don’t start with the assumption that you’ll break ground in 60 days.

    ADU Cost Breakdown in Teton Valley (2026)

    Here’s what a 700–900 sf detached ADU actually costs in TV right now:

    • Site work + foundation: $32,000–$58,000
    • Framing + roof: $48,000–$78,000
    • Mechanicals (HVAC, plumbing, electric): $42,000–$72,000
    • Insulation + drywall: $22,000–$34,000
    • Interior finishes (flooring, cabinets, counters, fixtures): $48,000–$95,000
    • Exterior finishes (siding, roofing, windows, doors): $38,000–$65,000
    • Utility connections + septic upgrades: $8,000–$45,000
    • Permits + engineering + design: $8,500–$18,000
    • Builder overhead, GC fee, contingency: $28,000–$52,000

    Total range: $274,500 – $517,000 for a 700–900 sf detached unit. That’s $305/sf on the low end (basic finishes, no septic upgrade, tight site) up to $575/sf on the high end (Jackson-adjacent finish level, complicated site, full septic redo). Attached ADUs and garage conversions typically save 15–25%.

    Permitting in Teton County, Idaho

    The Teton County ID path for an ADU:

    1. Zoning + setback check. Most residential zones allow one ADU by right, but setbacks vary by zone. Driggs city vs. unincorporated county have different rules.
    2. Septic review. Eastern Idaho Public Health signs off on capacity. This is the gate that stops most projects.
    3. Design + engineering. Plans stamped, snow load calcs (65–85 psf depending on elevation), energy code compliance.
    4. Permit submittal. Building permit through the county, plus any HOA architectural review. 6–10 weeks for review.
    5. Inspections during build. Foundation, framing, mechanicals, insulation, final. Standard sequence, ~6–8 inspections total.
    6. Certificate of occupancy. Required before you can rent or occupy.

    Jackson (Teton County WY) is similar but slower — add 6–10 weeks and expect design review scrutiny. Alta (technically Wyoming but adjacent) has its own overlays and short-term rental restrictions worth checking before design.

    Future Value — What an ADU Actually Adds Over 10 Years

    Three ways an ADU pays back:

    • Direct rental income: A permitted 800 sf STR ADU in Driggs or Victor grosses $32,000–$52,000 per year at current nightly rates and typical occupancy. Long-term rental is $1,800–$2,600/month.
    • Appraised value bump: On average an ADU adds 70–85% of its build cost to appraised value in this market. A $350k ADU typically adds $245k–$300k to appraisal.
    • Optionality on sale: Homes with a legal ADU sell faster in Teton Valley — our data shows about 22 days faster on average, and pull a 4–8% price premium.

    10-year math: at $40k/year gross rent minus ~$14k in expenses (utilities, cleaning, management, maintenance, taxes), you’re netting ~$26k/year. Over 10 years that’s $260k on a $350k build — not counting the appraisal bump or appreciation.

    When an ADU Makes Sense — and When It Doesn’t

    Makes sense if: your zoning allows STR, your septic has capacity or you were going to redo it anyway, you have 800+ sf of usable buildable area away from setbacks, and you’re okay with a 10–14 month total timeline.

    Doesn’t make sense if: STR is disallowed in your zone AND you don’t need multi-gen housing, your septic can’t handle it and you can’t stomach the upgrade cost, you’re on a tight lot, or you’re building purely as a speculative rental play in a zone with active regulation changes.

    Building from California, Colorado, or somewhere you can’t visit weekly? Most of our ADU clients live somewhere else while we build. JobTread gives you real-time photos, budget, schedule, and change orders — you see the same dashboard we do. Here’s how our clients monitor their ADU without flying in.

    How SwagerBuilds Handles ADUs

    Every ADU we build is fixed-price. That means no allowances buried in your contract that blow up in month five. We price the actual scope — septic reality included — before you sign. You get a JobTread login on Day One with the full schedule, budget, and every subcontractor bid we accepted. Remote owners see the same dashboard we do. When there’s a change, we send it to you for approval before it becomes a bill. Twenty years of doing this in Teton Valley means we know which septic engineer answers the phone, which framer shows up in April, and which zones will fight you on STR.

    FAQ

    Can I short-term rent an ADU in Teton Valley?

    Depends on your specific zone. Driggs, Victor, and unincorporated Teton County ID each have different STR rules. We check zoning and any HOA overlay before design.

    How long does it take to build an ADU in Teton Valley?

    From signed contract to certificate of occupancy: 10–14 months typical. Permit is 10–20 weeks, build is 5–8 months.

    Do I need a separate septic for an ADU?

    Not always. Eastern Idaho Public Health reviews capacity. If your existing system has margin, we tie in. If not, expect a $18k–$45k upgrade.

    Does an ADU raise my property taxes?

    Yes, 15–25% typical bump on the added value.

    Can I finance an ADU?

    Yes — cash-out refi or construction loan are the two most common paths. A few local banks (Bank of Idaho, First Federal Savings) do ADU-specific construction lending.

    Attached ADU or detached — which is cheaper?

    Attached usually runs 15–25% less, but privacy and STR value drop too. Detached earns more rent and appraises higher.

    What’s the smallest ADU worth building?

    600 sf is our minimum recommendation — below that the per-sf cost gets punishing and the rental appeal drops off.

    Want a Real Number on Your ADU?

    Send me your parcel and a rough scope. I’ll walk it, check septic and zoning, and give you a real fixed-price range — not a brochure guess. Start here.

    More reading: ADU, Shop + Addition Guide · Detached vs Attached ADU in Driggs · ADU Rental Income in Jackson Hole + Victor

  • Home Addition Cost in Victor, ID — Bump-Out, Master Suite, Second Story

    A home addition in Victor, ID runs $275–$550 per square foot of new footprint in 2026, with master-suite additions typically landing between $180K and $475K and second-story pop-tops running higher due to structural work below. Timeline: 5-10 months from permit to final.

    Home Addition in Victor — What You’re Actually Buying

    The south end of Teton Valley, closest to Teton Pass and the fastest Jackson commute — that’s the setting. Victor’s the entry point for a lot of Jackson commuters. Lots are smaller and tighter, and the tree cover changes how you site a build. Climate matters here: similar to Driggs but slightly warmer, still 100+ inch snow years and heavy wind at the pass. And the permit path runs through Teton County ID Planning + City of Victor — design review matters, especially anything visible from the pass. Any home addition you plan here has to answer for all three.

    Victor’s the Jackson commuter town. We build here for people who ski Jackson three days a week and want a house on the cheaper side of the hill.

    What Does a Home Addition Cost in Victor?

    Additions in Victor run $275 to $550 per square foot of new footprint in 2026. That includes foundation, framing, mechanical extension, finishes, and tie-in work to the existing house. The tie-in work is where costs jump — you’re cutting into an existing envelope, matching a roofline, extending mechanical systems that were sized for the original house.

    Sample Victor Addition Ranges

    • 400 sq ft bump-out (mudroom, dining nook): $110K-$220K
    • 600-800 sq ft master suite addition: $180K-$425K
    • Second-story pop-top (1,000-1,400 sq ft): $450K-$775K
    • ADU / guest quarters (separate entrance, kitchenette, bath): $250K-$500K

    Bump-Out vs Master Suite vs Second Story — Which Fits Victor?

    Depends on your lot and your house. Bump-outs work when you have setback room and just need a few hundred more square feet. Master suite additions are the highest-ROI move in Victor — the primary bath in most 1990s-2010 homes here is undersized by 2026 standards, and clients regularly recover 60-75% of an addition budget in resale. Second-story pop-tops are the answer when the lot is tight — Victor has plenty of infill lots where up is the only direction.

    Cold-climate detail matters here. Similar to Driggs but slightly warmer, still 100+ inch snow years and heavy wind at the pass means the tie-in has to be airtight or you’ll be chasing ice dams and drafts for years. I spec a proper WRB, sealed air barrier, and continuous exterior insulation on every addition.

    Building from out of state?

    Most of the owners we build for don’t live here. California, Colorado, Washington, Jackson second-home owners — they see the build through JobTread, not from a truck. Daily photo logs, weekly video walkthroughs, on-demand FaceTime tours, every dollar visible in real time. Site visits are optional, not required. Here’s how our remote-owner clients monitor their build without flying in.

    How the Home Addition Process Runs in Victor

    Every SwagerBuilds addition runs the same six-stage process. Consult, planning, contract, build, punch, warranty. Nothing skipped, nothing hidden. You watch the whole thing through JobTread — daily photo logs, all cost detail, written change orders that require your approval before a dollar moves.

    Timeline for Victor: 5-10 months. That’s from contract signature to punch list complete, assuming permits move on standard Teton County ID + City of Victor timelines. Weather delays get logged. Change orders get logged. Anything that shifts the schedule gets a written note explaining why.

    Why Fixed-Price Matters in Victor

    Cost-plus contracts are the most common way Victor owners get burned. The builder starts the job at $250K, and by month six it’s $380K because “materials moved” or “the plumbing was worse than expected.” Fixed-price contracts flip that dynamic. I do the discovery work up front — pre-demo inspection, wall opens where needed, mechanical assessment — and I price the whole scope before I ask you to sign.

    Twenty years watching budgets blow up in this valley taught me that transparency is the only real defense. Every SwagerBuilds contract is fixed-price, no allowances. Every change order is written and approved before it costs a dollar. Every day, you can log into JobTread and see exactly where your money went.

    What Makes Victor Home Additions Different

    Climate here answers a lot. Wall assemblies, roof detailing, mechanical sizing — everything has to answer for high-elevation snow and pass wind. A generic addition spec written for a mild coastal market will fail in Victor within five winters. I’ve seen every way a build goes sideways when the spec came from somewhere else.

    The other Victor factor: labor. Skilled trades here are booked. If you sign a contract with a builder who doesn’t have committed subs, you’re going to sit in schedule slippage. My electricians, plumbers, HVAC crew, and finish trades work on SwagerBuilds jobs on a rotating committed schedule. That’s why we hit our timelines.

    What Can Go Wrong on an Addition in Victor?

    Three common failures. Foundation tie-in done wrong — the new footing settles at a different rate than the old, and you get cracked drywall at the seam within two winters. Roofline transition done wrong — water finds the tie-in and you’re chasing leaks and ice dams for years. Mechanical undersized — the old furnace or hot water heater can’t cover the new addition, and the owner ends up replacing systems that weren’t in the original budget.

    The fix: proper foundation engineering that accounts for existing structure. Roofline tie-in detail drawn by an architect, not sketched by the framer on the job. Mechanical load calculation before contract signature, not after. Every SwagerBuilds addition goes through all three steps.

    ADU vs Addition in Victor — Which One Fits?

    Depends on what you want to do with the space. An ADU (accessory dwelling unit) is a separate legal dwelling with its own kitchen, bath, and entrance — great for rentals, in-law suites, or resale premium. An addition is an extension of your primary residence. In Victor, ADUs run higher per square foot because of the separate mechanical, water and sewer connections, and (usually) separate electrical service. Additions run cheaper per square foot because they piggyback on existing systems.

    ADU range in Victor: $275-$500 per sq ft. Addition range: $275-$550 per sq ft.

    Second-Story Pop-Tops in Victor

    Pop-tops are the answer when the lot is tight. In Victor, we see these most often on infill lots and older neighborhoods where setbacks make horizontal additions impossible. The catch: pop-tops require full structural analysis of the existing foundation and load-bearing walls, often reinforcement or replacement of both, and complete removal of the existing roof. That’s why they run $450K-$775K for 1,000-1,400 sq ft — you’re rebuilding half the house to add the top floor.

    Frequently Asked Questions

    How much does a master suite addition cost in Victor?

    $180K-$425K for a 600-800 sq ft master suite addition in Victor in 2026. Includes foundation, framing, tie-in, plumbing, electrical, HVAC extension, and finishes.

    How long does an addition take?

    Five to ten months from permit to final. Bump-outs run five to seven. Master suites and second-story additions run seven to ten.

    Do I need to move out during an addition?

    For bump-outs and master suites: usually not. For second-story pop-tops: yes, typically three to five months because the roof has to come off. We plan around that in the contract.

    Will an addition ruin the look of my house?

    Not if it’s designed right. My rule: match the roofline, match the siding, match the trim detail. If you can’t match, you have to intentionally contrast. Nothing in between.

    Related guides:

    Ready to Talk About Your Home Addition in Victor?

    Here’s how this works. Book a 15-minute planning call. Free. No commitment. We talk through what you want, the existing house, the budget you’re working with, and whether SwagerBuilds is the right fit. If it is, I write you a proposal. If it isn’t, I tell you that too. Twenty years in this valley — I don’t need to sell you something that doesn’t work.

    — Bryce Swager, 4th-generation Rigby builder

    Book a 15-minute planning call →