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Seattle Commercial Construction Contractor

Garco Construction serves the greater Seattle, Tacoma and Puget Sound area with general contractor, design-build and GC-CM services. Our team focuses on offering high quality projects delivered safely on time, on budget. We work with a variety of clients for our Western Washington construction services, from educational facilities to commercial construction, as well as public works or Government projects. We have an office located in Tacoma to facilitate all of our Seattle Area construction services.

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General Contractor (GC)

Since 1978, Garco has provided quality construction related services to a very diversified client base. Our team emphasizes communication and integrity, exceeding expectations of those we serve and maintaining a teamwork perspective with all those involved. We have a long list of in-house capabilities and self-perform many aspects of our projects.

GC-Construction Management

Our project management team is trained to manage projects ensuring that our clients receive the desired result on-time and within the established budget. Due to the diverse capabilities of our staff, we have the ability to provide complete services from the conceptual phase of a project all the way through to the completion of the warranty period.


Design-Build is the fastest growing and most popular method used to deliver constructions projects in the United States. What is design-build? Design-build is when the owner manages only one contract with a single point of responsibility. The designer and contractor work together from the beginning, as a team, providing unified project recommendations to fit the Owner’s schedule and budget.

In-House Design Services

Our  full-service in-house design team  offers architectural, engineering and construction design services. We pride ourselves on developing constructable designs using the latest design technologies. Whether you are remodeling an existing office space or looking to expand your company by constructing a new facility, our team can provide you with the quality and service you deserve.

Tacoma/Seattle Office

1145 Broadway Plaza, Suite 1340
Tacoma, WA 98402
Main: 253.503.7053
Fax: 253.503.7214

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Seattle Construction Company

Our team offers a wealth of experience and knowledge in design-build, GC-CM, commercial, educational, industrial, automotive dealership, and military construction. We take pride in self-performing concrete, carpentry, and steel erection on all of our projects. In addition to self-performing 25 to 30% of the work, we also own one of the largest fleets of construction equipment in the Inland Northwest. This allows us the opportunity to provide the highest quality product on-time and within budget for all of our commercial construction contractor projects.


Enjoy the Journey

Garco Construction is committed to building excellence and long-lasting relationships with our clients. We take pride in every detail of every project. Garco offers general contractor, construction management and design-build services. You can find our work throughout the United States from Alaska to Louisiana to Michigan. Discover more about what makes our company unique from our history, culture, leadership, community and more.

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Awards & Accolades

Garco Construction has earned numerous awards, acknowledgements and accolades over the years for excellence in work, level of performance and community involvement. Here are just some of our accomplishments.

Top 400 Contractors – ENR (Engineering News Record)

2019  | 2011 | 2010  | 2009 | 2008 | 2006 | 1995

Inland Northwest Association of General Contractors

2016 Excellence in Construction for Out of Market Project | Regional Logistics Support Complex TEMF Joint Base Lewis-McChord

2015 Excellence in Construction for New Construction | Spokane Convention Center

2015 Excellence in Construction Renovation | Hutton Elementary School Modernization & Addition

2015 Excellence in Construction for New Construction | Underhill Combined Sewer Overflow Storage Facility

Design Build Institute of America

2016 National Design-Build Excellence | Spokane Central Service Center

2012 National Design-Build Process Award| Spokane County Regional Water Reclamation Facility

Masonry Institute of Washington

2019 2nd Place Silver Award | Excellence in Masonry | North Pines Middle School

US Army Corps of Engineers

2001 Contractor of the Year, Seattle District, Northwest Division and all divisions within the continental US.

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“Garco has been amazing through the process getting us complete on time and on budget. This is despite an environment plagued by material and personnel shortages, and logistics challenges. They have managed to get the project done on budget and schedule, while delivering a phenomenal product.”

Todd Coleman, Former Executive Director, S3R3
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