Washington State’s construction sector is one of the largest on the West Coast, and it is anchored by builders that have worked the Puget Sound and Inland Northwest for generations. The companies behind that work range from marine and heavy-civil specialists to employee-owned general contractors building the region’s tech campuses, hospitals, and life-science labs.
Table of Contents
This post ranks the largest construction companies headquartered in Washington by their position on Engineering News-Record’s 2026 Top 400 Contractors list, which ranks firms by their 2025 construction revenue. Every revenue figure and rank below comes from ENR’s published list; sources are linked throughout.
The largest construction companies in Washington state
Here are the largest Washington-headquartered contractors on ENR’s 2026 Top 400, ranked by national position.
| Rank (ENR 2026 Top 400) | Company | Headquarters | 2025 Revenue ($ millions) |
|---|---|---|---|
| 106 | BNBuilders | Seattle, Wash | 1,300.0 |
| 131 | Goodfellow Bros. | Wenatchee, Wash | 1,027.3 |
| 180 | Lease Crutcher Lewis | Seattle, Wash | 746.5 |
| 223 | Manson Construction Co. | Seattle, Wash | 606.4 |
| 230 | Graham Construction | Seattle, Wash | 582.0 |
| 243 | Lydig Construction | Spokane Valley, Wash | 552.0 |
| 270 | Absher Construction Co. | Puyallup, Wash | 464.0 |
| 289 | Sellen Construction Co. Inc. | Seattle, Wash | 435.0 |
| 342 | Garco Construction | Spokane, Wash | 337.0 |
| 395 | GLY Construction | Bellevue, Wash | 251.3 |
Source: ENR 2026 Top 400 Contractors (2025 revenue).
BNBuilders
Headquarters: Seattle, Washington 2025 revenue (ENR 2026 Top 400): $1,300.0 million — national rank #106
BNBuilders is a 100% employee-owned general contractor that specializes in technically demanding work — life science, healthcare, and research-and-development facilities in particular. Founded in 2000, the firm became employee-owned in 2021 and marked 25 years in business in 2025, building from its Seattle home base across offices in California and Colorado.
BNBuilders’ services include:
- preconstruction
- self-perform construction
- special projects and smaller-scale work
- sustainable construction
- virtual design and construction (VDC)
The company has extensive experience servicing the following sectors:
- life science and pharmaceutical
- healthcare
- technology and R&D
- higher education and K–12
- civic, community, and multi-family
BNBuilders won first place in its category at the 2024 AGC National Construction Safety Excellence Awards. Its recent Washington work includes the $54 million Western Welcome Center at Western Washington University in Bellingham, a design-build project with Miller Hull, and the $25 million renovation of the Museum of Glass in Tacoma that anchors a permanent Lino Tagliapietra Legacy Gallery.
Goodfellow Bros.
Headquarters: Wenatchee, Washington 2025 revenue (ENR 2026 Top 400): $1,027.3 million — national rank #131
Goodfellow Bros. is a fourth-generation, family-owned heavy-civil contractor founded in Wenatchee in 1921 by brothers Jack, Bert, and Jim Goodfellow. The firm delivers earthwork, site development, and infrastructure across the Western United States, with additional offices in Hawai’i, Oregon, and California.
Goodfellow Bros.’ services include:
- earthwork, excavation, and site preparation
- grading and paving
- blasting and crushing
- underground utilities
- structural concrete
- water and environmental restoration work
The company has extensive experience servicing the following sectors:
- transportation, roads, and highways
- water resources
- renewable energy
- residential and master-planned communities
- public and civic work
- environmental restoration
Goodfellow Bros. was recognized with the AGC Rose Award for Safety Excellence in 2025. Its recent Washington work includes the Tahoma National Cemetery Phase 3 development in Kent, a $70-million-plus project that broke ground in November 2024, along with roadway and community-development work such as the Factoria Boulevard project and the Ten Trails community in Black Diamond.
Lease Crutcher Lewis
Headquarters: Seattle, Washington 2025 revenue (ENR 2026 Top 400): $746.5 million — national rank #180
Lease Crutcher Lewis, which builds under the name Lewis, is one of the oldest locally owned builders in the Pacific Northwest. The firm traces its founding to 1886, when N.T. Lease started the business in Great Falls, Montana; it moved to Seattle in 1939 and is now 100% employee-owned, putting roughly $500 million of construction in place each year.
Lewis’ services include:
- preconstruction and estimating
- integrated project delivery
- progressive design-build
- self-perform structural work
- sustainable and low-carbon construction
The company has extensive experience servicing the following sectors:
- commercial and corporate
- data centers and advanced technology
- education
- healthcare
- life sciences
Recent Lewis work includes 222 Fifth, a Seattle life-science building near Seattle Center that topped out, and Innovation Hall, a $79 million progressive design-build for UW Bothell and Cascadia College that opened in November 2023. Innovation Hall went on to win an AGC of Washington Build Washington Award in its public-building category.
Manson Construction Co.
Headquarters: Seattle, Washington 2025 revenue (ENR 2026 Top 400): $606.4 million — national rank #223
Manson Construction is one of North America’s largest marine and heavy-civil contractors, founded in 1905 as a pile-driving business on Seattle’s waterfront and now employing more than 800 people. The firm builds over-water infrastructure and runs one of the country’s largest privately owned dredging fleets, serving ports, energy clients, and federal navigation projects.
Manson’s services include:
- marine construction of wharves, piers, and terminals
- dredging and channel deepening
- offshore and deep-water work
- heavy lifts
- pile driving
The company has extensive experience servicing the following sectors:
- federal navigation and U.S. Army Corps of Engineers waterways
- ports and harbors
- oil, gas, and energy
- bridges and transportation infrastructure
- environmental restoration
Manson won an AGC Construction Risk Partners Build America Merit Award in 2024 for its P-443 Pier 6 Replacement design-build. On the West Coast, the firm was awarded a $26.3 million maintenance dredging contract covering the mouth and lower Columbia River between Washington and Oregon, worked by its hopper dredge Bayport.
Graham Construction
Headquarters: Seattle, Washington (Pacific Northwest hub) 2025 revenue (ENR 2026 Top 400): $582.0 million — national rank #230
Graham is an employee-owned construction group founded in 1926 that delivers buildings, industrial facilities, and civil infrastructure across North America. The wider group is headquartered in Calgary and runs its Pacific Northwest work from its Seattle office, which is the base ENR carries for the firm’s Washington-region revenue.
Graham’s services include:
- general contracting and construction management
- design-build delivery
- civil engineering and infrastructure
- public-private partnership delivery
- industrial maintenance and turnaround
The company has extensive experience servicing the following sectors:
- healthcare and life sciences
- multi-family residential and hospitality
- education
- roads, bridges, rail, and transit
- energy, power, and water
Graham’s recent Seattle-area work includes the 167-suite Residence Inn by Marriott at Northgate Station, completed in early 2025, and The Charles, a luxury apartment community in downtown Redmond. The firm has also been recognized with an AGC Mental Health Visionary Award for its work on jobsite mental health.
Lydig Construction
Headquarters: Spokane Valley, Washington 2025 revenue (ENR 2026 Top 400): $552.0 million — national rank #243
Lydig Construction is the Inland Northwest’s leading commercial general contractor, founded in 1956 and based in Spokane Valley. The firm delivers education, healthcare, mixed-use, and mission-critical facilities across Washington through general contracting and design-build.
Lydig’s services include:
- general contracting
- design-build delivery
- construction management
- preconstruction
- virtual design and construction
- historic renovation and seismic upgrades
The company has extensive experience servicing the following sectors:
- education, K–12 and higher education
- healthcare and biotech
- mixed-use, retail, and hospitality
- mission-critical and emergency-communications facilities
- civic and industrial
Lydig built the $297 million replacement for Rainier Beach High School in Seattle, which opened to students in 2024, and was selected for the $22.8 million renovation of Avista Stadium in Spokane. The firm was among the 2024 Build Northwest Award winners named by the Inland Northwest AGC.
Absher Construction Co.
Headquarters: Puyallup, Washington 2025 revenue (ENR 2026 Top 400): $464.0 million — national rank #270
Absher Construction is one of the Northwest’s oldest and most versatile builders, founded in 1940 by R.L. “Barney” Absher and 100% employee-owned since 2022. The firm works across competitive-bid, negotiated, design-build, and GC/CM delivery, with self-perform carpentry and concrete crews.
Absher’s services include:
- preconstruction
- general contracting and GC/CM
- design-build
- virtual design and construction
- self-perform carpentry and concrete
The company has extensive experience servicing the following sectors:
- K–12 and higher education
- healthcare
- community and civic
- faith-based
- public and private commercial
Absher builds heavily in education and civic work across the South Sound and is a regular presence on ENR’s Top 400 Contractors list.
Sellen Construction Co. Inc.
Headquarters: Seattle, Washington 2025 revenue (ENR 2026 Top 400): $435.0 million — national rank #289
Sellen Construction is the largest locally owned general contractor in the Pacific Northwest, founded in 1944 by John H. Sellen in Seattle’s South Lake Union. The firm builds for the region’s tech, science, healthcare, arts, and hospitality leaders, and it plans its workforce with Bridgit.
Sellen’s services include:
- general contracting
- construction management
- preconstruction
- self-perform craft work
- special projects and tenant improvements
The company has extensive experience servicing the following sectors:
- commercial office
- healthcare
- life sciences
- arts, culture, and non-profit
- education and historic renovation
Sellen is building Bellevue 600, a 43-story downtown Bellevue office tower for Amazon that topped out in September 2024, and was tapped as GC/CM for the redevelopment of Memorial Stadium at Seattle Center, an 8,000-seat rebuild running through 2027.
Garco Construction
Headquarters: Spokane, Washington 2025 revenue (ENR 2026 Top 400): $337.0 million — national rank #342
Garco Construction is a Spokane-based commercial general contractor founded in 1978, now with more than 400 team members and work across 18 states. The firm delivers general contracting, construction management, and design-build, with in-house design and self-perform structural capability.
Garco’s services include:
- general contracting
- construction management and preconstruction
- design-build
- in-house design
- heavy civil and structural work
The company has extensive experience servicing the following sectors:
- education and schools
- industrial and manufacturing
- military installations
- commercial
- aviation and heavy civil
Garco is the lead contractor on the $200 million Solstice Advanced Materials semiconductor-materials expansion in Spokane Valley, which broke ground in December 2025, and is also handling a fuel-facility expansion at Spokane International Airport.
GLY Construction
Headquarters: Bellevue, Washington 2025 revenue (ENR 2026 Top 400): $251.3 million — national rank #395
GLY Construction is a regional commercial general contractor founded in 1967 by Harold Gall and Robert Landau, based in Bellevue and focused on the Puget Sound region. The firm specializes in advanced-technology, healthcare, and education work.
GLY’s services include:
- general contracting
- preconstruction
- construction management
- self-perform and trade coordination
- sustainable and advanced-technology delivery
The company has extensive experience servicing the following sectors:
- advanced technology and corporate campuses
- healthcare
- education, K–12 and higher education
- community, civic, and non-profit
- historic renovation
GLY built the Microsoft Thermal Energy Center in Redmond, a geothermal district heating-and-cooling plant that was named ENR Northwest’s 2023 Project of the Year and advanced to ENR’s national Best of the Best program. The firm also delivered the Allen Institute for AI’s mass-timber workplace at Northlake Commons in Seattle.
Notable mentions
Sellen Construction (#289, Seattle) is the largest locally owned GC in the Pacific Northwest, and it plans its workforce with Bridgit. Before Bridgit, each part of the business ran its own spreadsheet — one for engineers, another for project-management staff, a third for field leadership — and weekly operations meetings got spent reconciling them. As Jamie Miller, Sellen’s Director of Engineering Development, put it: “The biggest change was we were able to start talking about our business or strategic initiatives, whereas before, we were mired in staffing conversations.”
Bridgit is the workforce planning software of choice for construction companies in Washington state
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Learn more about Bridgit, or book a demo to see it on your own projects.
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