Spray Foam Insulation cost: Bothell vs Seattle (2026)
Bothell and Seattle are a near-perfect match on spray foam insulation cost in 2026, both landing around $4,400.
Bothell WA
Typically around $4,400
Seattle WA
Typically around $4,400
Bothell vs Seattle: full breakdown
| Factor | Bothell | Seattle |
|---|---|---|
| Typical 2026 cost | $4,400 | $4,400 |
| Estimated range | $1,750–$7,050 | $1,750–$7,050 |
| Labor index (vs US) | ×1.18 | ×1.18 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | None | None |
| Labor share | $2,400 | $2,400 |
| Materials/equipment | $2,000 | $2,000 |
Spray foam insulation numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
Basically a tie — focus on the contractor
The two metros are effectively a wash for spray foam insulation — pick on contractor quality and timing, not location.
Spray foam insulation by type: Bothell vs Seattle
Every spray foam insulation type gets its own localized price for each metro, using the same labor, climate and permit adjustments — a true apples-to-apples comparison.
| Type | Bothell | Seattle |
|---|---|---|
| Open-cell | $1,750–$5,300 | $1,750–$5,300 |
| Closed-cell | $2,950–$8,250 | $2,950–$8,250 |
These are 2026 planning figures for spray foam insulation, localized to each city — not formal quotes.
Spray foam insulation by area: Bothell vs Seattle
Spray foam is priced by board foot (1 sq ft at 1 inch thick), which works out to about $1.50–$5 per sq ft of surface installed depending on foam type and thickness. Closed-cell costs more but adds twice the R-value per inch.
| Size | Bothell | Seattle |
|---|---|---|
| 500 sq ft | $1,050–$2,800 | $1,050–$2,800 |
| 1,000 sq ft | $1,750–$4,700 | $1,750–$4,700 |
| 1,500 sq ft | $2,600–$6,450 | $2,600–$6,450 |
| 2,000+ sq ft | $3,300–$7,650 | $3,300–$7,650 |
All figures are 2026 localized planning estimates for spray foam insulation — get an actual quote before you commit.
What insulation pros earn in each metro
Labor is about 55% of a spray foam insulation bill, so local wages drive most of the gap. These are real metro hourly wages for skilled installers (BLS OEWS), not estimates.
Seattle-Tacoma-Bellevue metro · about 32% above the US average installer wage.
Seattle-Tacoma-Bellevue metro · about 32% above the US average installer wage.
Source: U.S. Bureau of Labor Statistics, OEWS metro wages for HVAC installers (used as a trade-labor index).
Cheapest time for spray foam insulation in either city
Because most homeowners wait for the fall pre-winter panic, that's when prices peak. Getting it done in spring or summer means less competition and, often, an untapped rebate budget.
How much insulation is worth paying for?
R-value, air-sealing and material decide both the price and the payback. Our editors on the trade-offs.
The R-value case
Insulate to the DOE recommendation for your climate zone — under-insulating to save money leaves comfort and energy savings on the table that would have paid the job back.
The rebate case
Insulation has some of the best rebate math in home improvement — utility and state programs can cover a solid share (the federal 25C credits ended Dec 2025). Check DSIRE before you book and time it to a fresh rebate budget.
The air-sealing case
Insulation without air-sealing underperforms. Sealing leaks first is cheap and often delivers more comfort per dollar than thicker insulation alone — make sure it's in the scope.
Hit the DOE R-value for your zone, air-seal first, and stack the rebates. Insulation is one of the few upgrades where doing it fully is also the cheapest path to payback.
Bothell vs Seattle
Is spray foam insulation cheaper in Bothell or Seattle?
Not really — both cities land at almost the same number for spray foam insulation, around $4,400 each.
Why does spray foam insulation cost more in Seattle than Bothell?
It comes down to labor: Seattle indexes at 1.18 against Bothell's 1.18. The mixed-vs-mixed climate difference adds to the gap.
How much is spray foam insulation in Bothell, WA?
Expect to pay $1,750 to $7,050 for spray foam insulation in Bothell in 2026, averaging around $4,400.
Do insulation pros really charge more in one city?
They do, and the BLS wage data confirms it: installers earn about $41.1/hr around Seattle-Tacoma-Bellevue versus $41.1/hr near Seattle-Tacoma-Bellevue. With labor making up about 55% of a spray foam insulation job, that difference carries straight through to the final price.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
Timing doesn't change by city here — Spring and summer is the cheapest window in both Bothell and Seattle, saving roughly 5–10%. Avoid the pre-winter fall rush in either location, when emergency replacements push prices up.
Should I choose where to live based on spray foam insulation cost?
Cost shouldn't be the deciding factor between Bothell and Seattle — they land at nearly the same price. Contractor reputation, scope, equipment tier and timing matter more.
Compare spray foam insulation in other cities
Updated June 2026 · By Serhat Özçelik