Home Addition Cost in Utah: Per Square Foot Pricing (2026)
May 13, 2026
In plain English
Adding onto your home is almost always cheaper than moving — and in Utah's tight market, it's often the only way to get the space you need. Expect $280 to $650 per square foot depending on the addition type and your finishes.
Cost per square foot by addition type
| Type | $/sq ft | 200 sq ft | 600 sq ft | 1,200 sq ft |
|---|---|---|---|---|
| Bump-out (no foundation) | $280 – $400 | $56k – $80k | $168k – $240k | — |
| Single-story addition | $320 – $480 | $64k – $96k | $192k – $288k | $384k – $576k |
| Second-story addition | $400 – $620 | — | $240k – $372k | $480k – $744k |
| Wing with kitchen/bath | $450 – $700 | — | $270k – $420k | $540k – $840k |
Utah-specific note: 2026 lumber and labor are 8–12% above national average due to demand from Wasatch Front and Park City growth.
Why second stories cost more
| Factor | Impact |
|---|---|
| Structural reinforcement of existing home | +$30k – $80k |
| Temporary roof removal & weather protection | +$8k – $20k |
| New stairwell | +$15k – $30k |
| HVAC redesign for two zones | +$8k – $18k |
| Foundation/soil engineering | Sometimes required |
What's typically included
Standard scope
- Foundation (or structural for 2nd story)
- Framing & roofing
- Windows & exterior matching
- Insulation, drywall, paint
- Standard flooring
- HVAC extension
- Electrical & plumbing rough-in
- Permits & inspections
Premium upgrades
- Custom millwork & built-ins
- Wood floors or large-format tile
- Designer lighting
- Smart home wiring
- Heated floors
- Premium windows (Marvin, Pella Reserve)
Cost by Utah region
| Region | Single-story addition $/sq ft |
|---|---|
| Salt Lake City | $340 – $510 |
| Davis / Weber County | $310 – $460 |
| Utah County | $300 – $440 |
| Park City / Heber | $480 – $750 |
| St. George | $290 – $430 |
| Cache Valley | $280 – $410 |
Timeline
| Phase | Single-story | Second-story |
|---|---|---|
| Design & engineering | 6–12 weeks | 8–14 weeks |
| Permits | 4–8 weeks | 6–10 weeks |
| Foundation & framing | 4–8 weeks | 6–10 weeks |
| Mechanical, finishes | 12–20 weeks | 14–24 weeks |
Total: 6–14 months depending on complexity.
Common addition projects
| Project | Typical cost |
|---|---|
| Master suite (400–600 sq ft) | $145k – $310k |
| Family room (400 sq ft) | $115k – $180k |
| Mudroom + laundry (150 sq ft) | $48k – $85k |
| Sunroom (200 sq ft) | $55k – $120k |
| Garage to living conversion | $45k – $110k |
| Second-story over garage | $180k – $350k |
ROI
Additions typically recover 65–80% of cost at resale, but the daily livable value matters more — you stay in your home, in your neighborhood, with the space you actually need.
| Addition type | Resale recovery |
|---|---|
| Master suite | 60 – 75% |
| Kitchen expansion | 75 – 90% |
| Family room | 60 – 70% |
| Garage addition | 70 – 85% |
| Mudroom | 65 – 80% |
Permits & process
Most Utah cities require:
- Building permit ($800 – $3,500)
- Structural review (engineered plans)
- Setback verification
- Energy code compliance (2021 IECC)
- HOA approval (if applicable)
FAQ
How much does a 1,000 sq ft addition cost in Utah?
$300k – $620k depending on finishes, single vs. second story, and your city.
Do I need to move out?
Usually not — but expect dust, noise, and limited access to part of the home for 4–8 months.
Will my foundation support a second story?
A structural engineer determines this. Most homes built post-1980 can; older homes often need foundation reinforcement ($15k–$60k).
What's the cheapest way to add space?
Finishing an existing basement or converting a garage. True additions start around $280/sq ft.