4.2 
24 *The Angi rating for Structural Engineering companies in Seatac, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.
*The HomeAdvisor rating for Structural Engineering companies in Seatac, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.
Last update on February 21, 2026
Serving Seatac, WA and surrounding areas
Approved
In business since 1992
Free estimates
Small jobs welcome
"John came out and looked at several issues, determined them to be cosmetic not structural and wrote a certified letter to that effect. We got great peace of mind from his visit."
+8
Serving Seatac, WA and surrounding areas
Approved
In business since 2006
Customers say: Quick response
"Good engineer and very responsive."
+17
Serving Seatac, WA and surrounding areas
Approved
In business since 2007
Free estimates
Credit card accepted
Kim Eui (Elliot), recently worked as Structural Engineer for the City of LA for over 10 years and working at various structural firms in California and Washington \nState with licensed Civil and Structural Engineer in State of Washington and California, extra architect license of S Korea. Worked in Los Angeles, Sacramento in California, and Seattle, Lacey in Washington. Specializes in residential addition, new construction of residence to get Building permit by Civil and Structural Engineering. Can take on residential projects to large commercial projects. Call Kim Eui, today with any questions or projects you have.
Serving Seatac, WA and surrounding areas
Approved
In business since 2003
Small jobs welcome
Credit card accepted
"Professional, on time and on budget. Recommended engineer."
Serving Seatac, WA and surrounding areas
Approved
In business since 2025
Free estimates
Credit card accepted
"BT Engineers LLC did the tenant improvement design for our new space, and they did an amazing job. Our permits were approved very quickly. They were responsive and helpful throughout the whole process! I would highly recommend them!"
Serving Seatac, WA and surrounding areas
In business since 2018
Free estimates
Emergency services offered
"They did a really thorough job."
Serving Seatac, WA and surrounding areas
In business since 2016
Credit card accepted
Offers commercial services
"GS engineering, and Sim Singh in particular have been fantastic to work with. I am a general contractor and have had to hire a number of structural firms over time. Sim offers a very rare combination of a high level of skill in a highly technical field (specifically engineering) a high level of professionalism, and an overall pleasant personality/demeanor. As long as he has the time to take my calls, it is doubtful that I would ever call a different structural engineer than Sim."
Serving Seatac, WA and surrounding areas
In business since 2007
Free estimates
Credit card accepted
Kim Eui (Elliot), recently worked as Structural Engineer for the City of LA for over 10 years and working at various structural firms in California and Washington \nState with licensed Civil and Structural Engineer in State of Washington and California, extra architect license of S Korea. Worked in Los Angeles, Sacramento in California, and Seattle, Lacey in Washington. Specializes in residential addition, new construction of residence to get Building permit by Civil and Structural Engineering. Can take on residential projects to large commercial projects. Call Kim Eui, today with any questions or projects you have.
+4
Serving Seatac, WA and surrounding areas
In business since 1986
Emergency services offered
Small jobs welcome
"Mr. McCann came out to assess the water and carpenter ant damage to a wall and foundation sill plate of our home. He was able to quickly evaluate the problem area and provide the structural engineering report and repair task list we needed to get contractor bids on the reconstruction project. Highly recommended."
+7
Serving Seatac, WA and surrounding areas
In business since 1996
Free estimates
Emergency services offered
"I've used Greg for 3 home inspections total. He's offered expert knowledge and honest advice to ensure I made an educated decision on my home purchase. He even gave me recommendations that ended up saving me money from having to do another inspection, essentially taking that business out of his pocket. That's integrity, people before profit is the kind of guy Greg is. Very professional, knowledge and thorough. I'm happy to have worked with him and will use him again and again, he's gained my trust!"
+35
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