Blog

An unfinished basement is 800–1,500 square feet of paid-for square footage your family isn’t using. Finishing it is one of the highest-leverage projects in any Eastern Idaho home. Here’s what it costs in 2026.

2026 cost ranges

• Basic finish (open layout, no bath): $30–$55/sq ft
• Mid-range with bath and bedroom: $55–$85/sq ft
• Premium with wet bar, theater, full bath: $85–$130/sq ft

For a typical 1,000 sq ft Idaho Falls basement with one bedroom, full bath, and a family room: $60,000–$80,000 in 2026.

Where the money goes

• Framing and drywall: $12K–$18K
• Electrical: $5.5K–$9K
• Plumbing (if adding a bath): $7.5K–$13K
• HVAC mods: $2.5K–$5.5K
• Egress window install: $3.5K–$6.5K per window
• Bathroom finish: $9K–$22K
• Flooring (LVP): $4–$8/sq ft installed
• Permitting: $400–$900

Idaho code requirements people miss

• Egress window in every bedroom. 5.7 sq ft min clear opening, max 44″ sill height.
• Smoke and CO detectors hardwired with battery backup.
• Ceiling height 7’0″ min in living areas.
• GFCI protection in bathrooms and within 6 feet of any wet location.
• Permitting required in Bonneville County for framing, electrical, or plumbing.

Timeline

Permit to substantial completion: 8–12 weeks. Add 3–4 weeks for egress excavation.

The ROI question

Mid-range basement finishes in Idaho Falls typically recoup 70–75% at resale. The bigger win is daily livability.

Design-build means one contract covers design and construction. Traditional means you hire an architect, get plans, then bid the build separately. Both work. Here’s how to choose for a Teton Valley remodel.

What design-build gets you

• One point of accountability. No finger-pointing between architect and contractor.
• Real cost feedback during design. A builder in the design room kills $200K choices before they’re drawn.
• Faster timeline. Design and pre-construction overlap. Permits get pulled earlier.
• Tighter budget control. Allowances replaced with real selections, less change-order risk.

What you give up

• Architect independence. If your builder has cost incentive bias, design suffers. Pick a builder who treats design as a profit center, not a loss leader.
• Bid competition. You’re not getting 3 GC bids on the same plans. You need to do due diligence upfront on the builder.

When design-build is the right call

• Remodels (anything inside existing walls)
• Tight budgets where cost feedback matters
• Owners who live remotely and need a single point of contact
• Complex sites where construction reality drives design

Questions to ask before signing

1. Who does the actual design — in-house designer, architect on retainer, or you bring your own?
2. What’s the design fee structure? Fixed, hourly, or percentage?
3. When does design end and construction pricing begin?
4. What changes after the fixed price is set? What triggers change orders?
5. Show me 3 completed projects of similar scope and budget.

Teton Valley cabins have surprises. 1980s construction with no vapor barrier, undersized septic, dated electric, sloping foundations. Here’s the checklist to run before you commit to a remodel.

Pre-design checklist

1. Confirm property lines and setbacks. Many older cabins are technically over the line.
2. Get a septic inspection. 1,000-gallon tanks built for a 2-bedroom won’t pass for a 4-bedroom expansion.
3. Test well capacity. 5 GPM minimum for a remodeled home.
4. Check HOA design review timing. Teton Springs, Targhee, and most subdivisions need 30–90 days.
5. Get a structural pre-inspection. Look for foundation settlement, undersized framing, fire damage.
6. Verify electrical capacity. Many cabins are 100-amp — a remodel often forces a 200-amp upgrade ($4K–$8K).
7. Test for asbestos and lead. Required if built before 1980. $400–$900 test, can save $20K in surprises.
8. Photo-document everything. Before demo, before contractor walks. Protects you in disputes.

Decisions that should happen before you sign

• Will the cabin be a rental, second home, or primary?
• What’s your decision-making cadence — weekly calls, monthly site visits?
• Who has signature authority on change orders?
• What’s your budget contingency? (15% minimum, 20% on cabins pre-1990.)

Mountain home remodel cost in Driggs and Victor isn’t the same as a Boise or Idaho Falls remodel. Here’s what’s actually shipping in 2026.

By scope

• Single bathroom remodel: $35K–$95K
• Kitchen remodel: $90K–$275K
• Primary suite remodel: $85K–$200K
• Great room + kitchen combo: $185K–$425K
• Whole-home interior: $425K–$1.2M+
• Whole-home gut to studs: $550–$850/sq ft

Why Teton Valley is more expensive

Labor is the biggest driver — quality sub trades in Teton Valley charge a 25–40% premium over Idaho Falls because demand outstrips supply. Materials freight adds 8–15%. Winter site days are limited. HOA review adds 2–4 months.

Where to spend, where to save

Spend

Windows (triple-pane minimum), insulation (closed-cell), HVAC (high-MERV ERV), waterproofing on bath remodels. These don’t show but they decide whether the house is comfortable and lasts.

Save

Mid-tier appliances (Bosch / Cafe instead of Wolf / Sub-Zero — the difference is appearance, not function for most buyers). Quartz instead of imported stone slabs. Engineered hardwood instead of solid wide-plank.

Teton Valley has the best mountain remodel work in the Mountain West right now, and the worst horror stories. The difference comes down to three things: builder selection, scope discipline, and decision speed. Here’s what a high-end remodel actually looks like in 2026 if you do it right.

What “luxury remodel” actually costs here

For a comprehensive interior remodel in Driggs, Victor, or Tetonia in 2026, expect $300–$550 per square foot on the touched area. A full kitchen, primary suite, and great room reno on a 2,800 sq ft home typically runs $425K–$725K.

Whole-home gut to studs in this market: $550–$850 per square foot. Add structural changes, that climbs to $1,000+. These are real Teton Valley numbers, not Boise or Salt Lake numbers.

Why Teton Valley remodels cost more

• Sub trades are stretched thin. The good ones book 6–12 months out.
• Materials freight is 8–15% higher than valley markets.
• Winter cuts the workable site days by 30%.
• HOA and county design review adds 2–4 months to permits.
• Most owners are remote, so site decisions need to be remote-friendly.

The three decisions that decide your project

1. Design before contracts

Most blown budgets come from contracts signed off rough sketches. Get to 80% design before you sign a fixed price. A real design-build firm will charge $15K–$40K for this phase and it saves $150K+ in change orders.

2. Allowance discipline

If your contract has a $40/sq ft tile allowance, you’re going to overspend it. We’d rather quote real numbers based on samples you’ve already selected.

3. Site-aware sequencing

Demo in October when you can’t get framing crews till March is how you lose a winter. Sequence with site reality.

Timeline reality

Whole-home remodel in Teton Valley, design through move-back: 14–20 months. Kitchen + primary suite: 5–9 months. Single bathroom or laundry: 10–16 weeks.

How we work at SwagerBuilds

Design-build under one contract. Real selections before pricing. JobTread access for daily photos and live cost tracking. Crews that have built in Teton Valley winters for years. Owner can manage from anywhere with confidence.