Cheapest States for Attic Insulation (2026)
Attic Insulation cost ranked across all 50 states for a typical 1,000 sq ft project. The Southeast is cheapest (from $900); the West is priciest (up to $6,200) — a spread of about 44%.
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Which states are cheapest for attic insulation? Attic Insulation is least expensive in the Southeast — including Alabama, Arkansas, Florida, Georgia, and Kentucky — where a typical 1,000 sq ft project averages $1,800. It is most expensive in the West (Alaska, California, Colorado, Hawaii, and Idaho), averaging $2,600. The national average is about $2,160 in 2026.
- Cheapest region
- Southeast
- Priciest region
- West
- National average
- $2,160
- State spread
- ~44%
$1–$5 per sq ft. States include Alabama, Arkansas, Florida, Georgia, and Kentucky.
$1–$6 per sq ft. States include Alaska, California, Colorado, Hawaii, and Idaho.
Attic Insulation Cost by Region, Ranked
Cheapest to most expensive, for a typical 1,000 sq ft project (2026).
| Rank | Region | Per sq ft | Typical total |
|---|---|---|---|
| 1 | Southeast | $1–$5 | $900–$4,600 |
| 2 | Midwest | $1–$5 | $1,000–$5,000 |
| 3 | Southwest | $1–$5 | $1,000–$4,900 |
| 4 | Northeast | $1–$6 | $1,200–$5,800 |
| 5 | West | $1–$6 | $1,300–$6,200 |
Attic Insulation Cost by State, Ranked (2026)
All 50 states, cheapest to most expensive, for a typical 1,000 sq ft project. Click any state for a full local breakdown.
| # | State | Region | Avg total | vs. US avg |
|---|---|---|---|---|
| 1 | Alabama | Southeast | $1,800 | -17% |
| 2 | Arkansas | Southeast | $1,800 | -17% |
| 3 | Florida | Southeast | $1,800 | -17% |
| 4 | Georgia | Southeast | $1,800 | -17% |
| 5 | Kentucky | Southeast | $1,800 | -17% |
| 6 | Louisiana | Southeast | $1,800 | -17% |
| 7 | Mississippi | Southeast | $1,800 | -17% |
| 8 | North Carolina | Southeast | $1,800 | -17% |
| 9 | South Carolina | Southeast | $1,800 | -17% |
| 10 | Tennessee | Southeast | $1,800 | -17% |
| 11 | Virginia | Southeast | $1,800 | -17% |
| 12 | West Virginia | Southeast | $1,800 | -17% |
| 13 | Arizona | Southwest | $2,000 | -7% |
| 14 | Illinois | Midwest | $2,000 | -7% |
| 15 | Indiana | Midwest | $2,000 | -7% |
| 16 | Iowa | Midwest | $2,000 | -7% |
| 17 | Kansas | Midwest | $2,000 | -7% |
| 18 | Michigan | Midwest | $2,000 | -7% |
| 19 | Minnesota | Midwest | $2,000 | -7% |
| 20 | Missouri | Midwest | $2,000 | -7% |
| 21 | Nebraska | Midwest | $2,000 | -7% |
| 22 | New Mexico | Southwest | $2,000 | -7% |
| 23 | North Dakota | Midwest | $2,000 | -7% |
| 24 | Ohio | Midwest | $2,000 | -7% |
| 25 | Oklahoma | Southwest | $2,000 | -7% |
| 26 | South Dakota | Midwest | $2,000 | -7% |
| 27 | Texas | Southwest | $2,000 | -7% |
| 28 | Wisconsin | Midwest | $2,000 | -7% |
| 29 | Connecticut | Northeast | $2,400 | +11% |
| 30 | Delaware | Northeast | $2,400 | +11% |
| 31 | Maine | Northeast | $2,400 | +11% |
| 32 | Maryland | Northeast | $2,400 | +11% |
| 33 | Massachusetts | Northeast | $2,400 | +11% |
| 34 | New Hampshire | Northeast | $2,400 | +11% |
| 35 | New Jersey | Northeast | $2,400 | +11% |
| 36 | New York | Northeast | $2,400 | +11% |
| 37 | Pennsylvania | Northeast | $2,400 | +11% |
| 38 | Rhode Island | Northeast | $2,400 | +11% |
| 39 | Vermont | Northeast | $2,400 | +11% |
| 40 | Alaska | West | $2,600 | +20% |
| 41 | California | West | $2,600 | +20% |
| 42 | Colorado | West | $2,600 | +20% |
| 43 | Hawaii | West | $2,600 | +20% |
| 44 | Idaho | West | $2,600 | +20% |
| 45 | Montana | West | $2,600 | +20% |
| 46 | Nevada | West | $2,600 | +20% |
| 47 | Oregon | West | $2,600 | +20% |
| 48 | Utah | West | $2,600 | +20% |
| 49 | Washington | West | $2,600 | +20% |
| 50 | Wyoming | West | $2,600 | +20% |
"Avg total" is the mid-range estimate for a 1,000 sq ft project. "vs. US avg" compares it against the $2,160 national average.
How this ranking is calculated
BuildCost models attic insulation pricing across five U.S. regions (Northeast, Southeast, Midwest, Southwest, West). Each state is ranked by its region's labor and material costs, so states in the same region share a baseline — actual prices still vary by metro, contractor, and site conditions. Totals assume a typical 1,000 sq ft project at mid-grade materials. For a precise local figure, open your state's page or run the free attic insulation estimate tool.
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Frequently Asked Questions
What is the cheapest state for attic insulation?
The lowest attic insulation costs are in the Southeast region — states like Alabama, Arkansas, Florida, Georgia, and Kentucky. A typical 1,000 sq ft project there runs $900–$4,600, averaging $1,800 in 2026.
What is the most expensive state for attic insulation?
The highest attic insulation costs are in the West region — states like Alaska, California, Colorado, Hawaii, and Idaho. A typical 1,000 sq ft project there runs $1,300–$6,200, averaging $2,600 — roughly 44% more than the cheapest region.
How much does attic insulation cost on average in the US?
Nationally, attic insulation costs $1,080–$5,300 for a typical 1,000 sq ft project, averaging about $2,160 in 2026.
Why does attic insulation cost vary by state?
The biggest driver is regional labor rates, which can differ 30–50% between markets. Material logistics, permit fees, code requirements, climate-driven construction needs, and local contractor demand also push costs up or down. BuildCost models pricing across five U.S. regions, so states in the same region share a baseline.
Compare Other Project Costs by State
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How big is your Attic Insulation?
Measure the attic floor — usually close to the footprint of the top floor of the house. A 2,000 sq ft two-story home typically has about 1,000 sq ft of attic floor.
Attic Insulation cost guide
National averages, labor vs. materials, hidden costs, and contractor questions.
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