City comparison
Attic Insulation cost: Boise City vs Caldwell (2026)
Attic insulation costs about the same in Boise City and Caldwell in 2026 — roughly $3,900 in each.
Boise City ID
$1,550 – $6,250
Typically around $3,900
Caldwell ID
$1,550 – $6,250
Typically around $3,900
Side by side
Boise City vs Caldwell: full breakdown
| Factor | Boise City | Caldwell |
|---|---|---|
| Typical 2026 cost | $3,900 | $3,900 |
| Estimated range | $1,550–$6,250 | $1,550–$6,250 |
| Labor index (vs US) | ×0.97 | ×0.97 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.08 | ×1.08 |
| Local permit | None | None |
| Labor share | $2,150 | $2,150 |
| Materials/equipment | $1,750 | $1,750 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national attic insulation range for local labor, climate and permits.
FAQ
Boise City vs Caldwell
Is attic insulation cheaper in Boise City or Caldwell?
In 2026, attic insulation costs about the same in both — roughly $3,900 in each city.
Why does attic insulation cost more in Caldwell than Boise City?
The main driver is local labor rates: Caldwell's labor index is 0.97 versus 0.97 in Boise City. Climate zone (cold vs cold) also shift the total.
How much is attic insulation in Boise City, ID?
In Boise City, attic insulation typically runs $1,550–$6,250 in 2026, with most homeowners paying around $3,900.
Updated June 2026 · By Costadia Editorial