Based on 92 official home addition permit filings over the last 12 months. Rankings update weekly.
Seattle is one of the most active home addition markets in the country. Over the past 12 months, 92 home addition permits were filed across the metro — representing 2 distinct contractors competing for homeowners and commercial clients alike. Total declared project value reached $27.8M in the last year, with an average project size of $306K. That's a significant addressable market for any home addition contractor serious about growth. The rankings below are based on official permit filings — not reviews or self-reported data. Every contractor on this list has pulled documented home addition permits in Seattle within the last 12 months. Volume is the primary ranking signal; it reflects consistent, verifiable activity in the local market.
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| # | Contractor | Permits (12mo) | Dollar Volume | Primary ZIP |
|---|---|---|---|---|
| 1 | City Construction Solution LLC | 1 | $27K | 98112 |
| 2 | Fike Industrial Construction | 1 | $138K | 98199 |
Rankings based on official building permit filings. Last updated 2026-08-15. Source: open government data portals.
These ZIPs had the most home addition permit activity in the last 12 months — the highest concentration of potential customers for home addition contractors.
Verified contractors get a badge, a public profile, and direct inbound leads from homeowners pulling permits in your ZIP codes.