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Engineering & architecture in Seattle, WA

684 engineering & architecture listed in Seattle, Washington. 505 with a phone number and 636 with a website.

Seattle accounts for 34.5% of the engineering & architecture listed in Washington.

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Quick answer

Seattle, WA has 684 engineering & architecture listed on USA Business Search. 505 list a phone number and 636 list a website. The most listings are in ZIP codes 98101, 98104, 98121.

Updated November 2026
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How to choose an engineering firm in Seattle

  • Ask who will actually do the work and how often you'll hear from them.
  • Get the scope, price and timeline in writing.
  • Ask for two references from clients like you.

Check the business: confirm a company's registration with the state in our Washington business lookup guide, and licensed trades in the contractor license lookup guide.

Common questions

How many engineering & architecture are listed in Seattle, Washington?

USA Business Search shows 684 engineering & architecture in Seattle. 505 list a phone number and 636 list a website.

Which ZIP codes do these listings cover?

They include ZIP codes 98101, 98104, 98121, 98103, 98109, 98107, 98122, 98134.

How do I choose an engineering firm in Seattle?

Ask who will actually do the work and how often you'll hear from them. Get the scope, price and timeline in writing. Ask for two references from clients like you. Check the license or registration through the Washington business lookup guide.

How do I add or fix a listing?

Listings are free. Use Add your business, or the Claim or fix link on any listing.

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