At-a-glance
- Hard cost
- $325–$600/sq ft
- Land
- $150K–$1.5M+ depending on foothills vs. valley floor
- Permit
- 8–14 weeks (Boise); 6–10 weeks (Ada/Canyon)
What moves cost here
- Foothills sites frequently need engineered retaining, extended drives, and wildfire mitigation.
- Boise's Foothills Development ordinance restricts grading, driveway grade, and hillside footprint.
- Skilled-trade capacity has improved from 2022 peaks but remains tight for custom-grade finishes.
Site considerations
- Irrigation-district assessments and pressurized irrigation hookups can surprise out-of-state buyers.
- Well/septic is common on parcels above the foothills bench — perc and yield tests are prerequisites.
- HOA design review is universal in newer Eagle, Meridian, and Star subdivisions.
Plan your Boise build
Turn these local realities into a portable spec sheet you can hand to any builder or lender.
Related planning reading
Other markets we cover
Compare cost, land, and permit realities
Ranges reflect 2026 builder quotes for custom-grade work. Calibrated against our content methodology.