ENR #106
- Website
- bnbuilders.com
No. 223 · ENR Top 400 Contractors 2026
Manson Construction Co.
Manson Construction Co., listed in Seattle, Washington, ranks No. 223 on the 2026 ENR Top 400 Contractors list.
Who is Manson Construction Co.?
On the ENR Top 400 Contractors list for 2026, published by Engineering News-Record, it ranks No. 223. According to its website, it was founded in 1905.
You can find Manson Construction Co. at 5209 East Marginal Way South, Seattle, WA 98124. The phone number on record is (206) 762-0850. More about the company is on its website, mansonconstruction.com.
Manson Construction Co. is one of 4 construction companies we list in Seattle. Before you hire any contractor in Washington, check the license with the Washington State Department of Labor and Industries.
What does Manson Construction Co. say about its work?
Manson Construction brings innovative solutions and engineering expertise to high-profile marine infrastructure, dredging, and offshore energy projects.
In the company's own words, from mansonconstruction.com, read October 2026.
Where is Manson Construction Co. located?
Manson Construction Co. is at 5209 East Marginal Way South, Seattle, WA 98124.
How big is Manson Construction Co.?
Manson Construction Co. ranks No. 223 on the ENR Top 400 Contractors list for 2026. Engineering News-Record ranks the largest U.S. contractors by construction revenue.
Source: ENR Top 400 Contractors (2026), Engineering News-Record
How do I check Manson Construction Co.'s contractor license?
Search the Washington State Department of Labor and Industries for Manson Construction Co. before you hire. We do not hold license records for individual companies. Washington requires contractors to register with the Department of Labor and Industries, and licenses electricians and plumbers.
Check a license in WashingtonLicensing rules checked October 2026. Requirements change, so confirm on the state site.
What other construction companies are in Seattle?
We list 4 construction companies in Seattle. Here are 3 more.
- ENR #180
- Website
- lewisbuilds.com
- ENR #230
- Website
- grahambuilds.com
FAQ
Manson Construction Co.: FAQs
Where is Manson Construction Co. located?
Manson Construction Co. is at 5209 East Marginal Way South, Seattle, WA 98124.
What does Manson Construction Co. say about its work?
On mansonconstruction.com, Manson Construction Co. describes itself like this: "Manson Construction brings innovative solutions and engineering expertise to high-profile marine infrastructure, dredging, and offshore energy projects."
How do I contact Manson Construction Co.?
Call (206) 762-0850. Visit mansonconstruction.com. The office is at 5209 East Marginal Way South, Seattle, WA 98124.
How big is Manson Construction Co.?
Manson Construction Co. ranks No. 223 on the ENR Top 400 Contractors list for 2026. Engineering News-Record ranks the largest U.S. contractors by construction revenue.
Is Manson Construction Co. licensed?
We do not hold license records for individual companies. Washington requires contractors to register with the Department of Labor and Industries, and licenses electricians and plumbers. Search the Washington State Department of Labor and Industries to check a contractor before you hire.
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Office locations © OpenStreetMap contributors, available under the Open Database License. Company rankings from the ENR Top 400 Contractors (2026).
