Solar Installation Cost in Seattle, WA
Solar Installation in Seattle, WA costs a median of $18,000, with the middle 50% of projects between $6,326 and $27,165. Based on 6,104 permits filed between March 2018 and September 2026 with Seattle Department of Construction and Inspections. Last recalculated September 13, 2026.
Sourced from 6,104 building permits on file with the City of Seattle. Source: Seattle Building Permits.
What Most Homeowners Paid
Each bar counts the projects filed in that price range.
| Price range | Projects |
|---|---|
| $2,200 to $6,226 | 1,381 |
| $6,226 to $10,253 | 604 |
| $10,253 to $14,279 | 471 |
| $14,279 to $18,306 | 517 |
| $18,306 to $22,332 | 734 |
| $22,332 to $26,359 | 627 |
| $26,359 to $30,385 | 540 |
| $30,385 to $34,412 | 369 |
| $34,412 to $38,438 | 257 |
| $38,438 to $42,465 | 167 |
You could save $5,400 on a typical solar PV system in this market by claiming the federal Investment Tax Credit on your tax return.
- Federal Solar Investment Tax Credit (ITC)30%
- Federal credit applies to systems placed in service through .
Net cost is the median permit value minus the credits above, with each percent credit capped at its statutory maximum. Credits are nonrefundable and require sufficient tax liability to claim. Utility-level rebates are not included. Sources: IRS Form 5695.
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Public record data. HomeQuotr does not alter, estimate, or interpolate permit values.
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Half of all projects cost less. Half cost more.
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Solar Installation in Nearby Cities
Common Questions About Solar Installation Costs in Seattle
The median solar installation project in Seattle, WA costs $18,000, based on 6,104 building permits. Most projects fall between $6,326 and $27,165.
The middle 50% of solar installation projects in Seattle fall between $6,326 and $27,165. Costs vary with project scope, materials, property size, and local labor rates.
This estimate is based on 6,104 building permits filed between March 2018 and September 2026 with Seattle Building Permits.
Every price comes from building permits filed with city and county governments. When a contractor pulls a permit, they declare the project value. HomeQuotr aggregates those declared values for Seattle. Not surveys, not estimates, not self-reported data.
Compared with nearby cities, solar installation runs Spokane at $18,000.
Yes. HomeQuotr is free for homeowners, with no account required and no contractor calls. We sell data to businesses, not your phone number to contractors.
Solar projects in Seattle may qualify for Federal Solar Investment Tax Credit (ITC).