What Cornerstone General Contractors does

Cornerstone General Contractors, Inc. is a Bothell, Washington-based general contractor that delivers pre-construction and construction services for institutional clients across Western Washington. Its core service stack spans preconstruction (estimating, constructibility reviews, BIM coordination, scheduling and value analysis), self-performance construction, alternative project delivery (notably Progressive Design-Build), safety, and quality/craftsmanship programs, with explicit capabilities in mass timber construction using cross-laminated timber (CLT), glulam beams and columns, dowel-laminated timber (DLT), and hybrid structural systems combining timber with steel and concrete. The firm has positioned itself as a regional pioneer on this front, claiming the first K-12 mass timber project for Seattle Public Schools (Van Asselt) and the first Puget Sound elementary school with mass timber as its primary structural system (Hilltop Heritage).

Revenue is generated project-by-project under fixed-price or cost-plus general construction contracts, with no public pricing tiers disclosed; the operating model combines direct self-perform crews with a local subcontractor base in the Puget Sound region. GTM motion is relationship-driven enterprise field sales to institutional buyers (K-12 school districts, municipalities, tribal nations, healthcare organizations) supplemented by quarterly 'Connect and Build' subcontractor events and industry association participation. The customer base skews heavily toward K-12 public school districts (the named primary vertical), with secondary exposure to healthcare, government/municipal, and private education; a representative deal set includes multi-phase campuses and individual projects at or above $174 million. Customer references are concentrated in a recurring set of Western Washington districts (Bellevue, Lake Washington, Bothell, Woodinville, Fife, Everett, Monroe), and the firm has been recognized for DEI/MWBE outreach via Tabor 100, NAMC, and the WA Center of Excellence.

Name

Cornerstone General Contractors

Legal name

Cornerstone General Contractors, Inc.

Website

https://cornerstonegci.com

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

51–100 employees

Short description

Cornerstone General Contractors is a Bothell, Washington-based general contractor specializing in K-12 education construction, healthcare, and public facilities throughout Western Washington. The firm is a regional pioneer in mass timber construction and Progressive Design-Build delivery for institutional clients.

Ownership category

akta.pro rank

Product category

Commercial Construction Services

NAICS

Nonresidential Building Construction (2362)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), Operative Builders (1531)

akta.pro primary industry

Commercial General Contracting (New Build) (IMAFAAAA)

akta.pro secondary industry

Self-Performing General Contractors (IMAFAAAI)

Keywords

• General contracting services
• K-12 school construction
• Mass timber construction
• Design-build delivery
• Preconstruction services

Headquarters

HQ city

Bothell

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales

Revenue model

1. General Construction Services: Cornerstone generates revenue through construction project contracts with public and private sector clients. Revenue is project-based, earned through fixed-price or cost-plus arrangements on construction projects ranging from K-12 schools to healthcare facilities and public infrastructure.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels7 records

Core offering

Cornerstone General Contractors is a Seattle-based general contractor providing preconstruction, construction management, self-performance construction, and alternative delivery (Progressive Design-Build) services for institutional clients across Western Washington. The firm specializes in K-12 education, healthcare, and public/community facility construction, with pioneering expertise in mass timber construction using cross-laminated timber (CLT), glulam beams, and hybrid structural systems.

Product overview

Cornerstone General Contractors is a Seattle-based general contractor specializing in K-12 education construction, healthcare facilities, and public/community spaces throughout Western Washington. The company offers a unified service platform combining preconstruction, self-performance construction, alternative delivery methods (including Progressive Design-Build), safety, quality craftsmanship, and innovation. The company has developed specialized expertise in mass timber construction, having completed multiple pioneering projects in the Puget Sound region using cross-laminated timber (CLT), glulam beams, and hybrid structural systems. Projects span new construction, modernizations, additions, and renovations across elementary, middle, and high schools, as well as healthcare facilities, justice centers, fire stations, and community facilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Preconstruction Services Comprehensive preconstruction services including detailed estimating, existing conditions surveys, site logistics planning, disruption avoidance planning, scheduling, value analysis and cost studies, constructibility and design coordination reviews, subcontractor procurement and administration, and Building Information Modeling (BIM) services, offered to institutional clients in Western Washington.
• Self-Performance Construction In-house self-performance construction capabilities allowing Cornerstone to complete project scopes without relying on subcontractors, enabling direct quality control and schedule efficiency for institutional clients.
• Alternative Delivery Construction (Progressive Design-Build)
• Mass Timber Construction
• K-12 Education Construction
• Healthcare Facility Construction
• Public/Community Construction

Quantifiable outcome

• Completed 8 projects during 'Super Summer' 2023 and 6 projects during 'Super Summer' 2025, all completed on schedule for school year openings
• +3 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• WA Center of Excellence for Advancement of Women in the Construction TradescoreStrategic or Co-development Partner · 1 January 2023Partnership recognizing Cornerstone's leadership in advancing women in construction trades through industry leadership and mentorship programs.
• Tabor 100coreStrategic or Co-development Partner · 1 January 2022Partnership with Tabor 100 (African American business association) for business development with MWBE firms, hosting Connect and Build events for minority contractors.
• ANCOR FoundationminorStrategic or Co-development Partner · 1 January 2022Partnership supporting individuals with disabilities through community building awards and initiatives.
• National Association of Minority ContractorscoreStrategic or Co-development Partner · 1 January 2020NAMC partnership for minority community engagement and MWBE outreach programs in the construction industry.
• Dykeman ArchitectscoreStrategic or Co-development PartnerCornerstone partnered with Dykeman Architects from earliest planning stages on the Arlington Operations Center Progressive Design-Build project, co-developing structural concepts and budget in real time with the owner.
• Bassetti ArchitectscoreStrategic or Co-development PartnerLongstanding partnership with Bassetti Architects on multiple mass timber school projects including Van Asselt School and Asa Mercer Middle School, collaborating on design and structural systems.
• KMD ArchitectscoreStrategic or Co-development PartnerPartnership with KMD Architects on the Lummi Nation Wellness Center healthcare project.
• Subcontractors and Suppliers NetworkcoreChannel Partner/ Reseller/ DistributorStrong network of local subcontractors and suppliers in the Greater Puget Sound region, with honest approach and reputation for excellence making Cornerstone a preferred partner.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• BNBuilders: Seattle-based general contractor serving K-12, higher education, healthcare, and life sciences across the PNW. Comparable in size, regional focus, and public-sector client base, with similar self-performance capabilities.
• Lease Crutcher Lewis: Pacific Northwest general contractor specializing in K-12, higher education, healthcare, and civic construction. Direct overlap with Cornerstone on institutional clients, alternative delivery methods, and Puget Sound geographic focus.
• Absher Construction Company: PNW-headquartered general contractor with deep K-12 and public works portfolio across Western Washington. Closely comparable on customer base (school districts, municipalities), project type (occupied campus, large-scale public facilities), and regional footprint.
• Walsh Construction: Regional Pacific Northwest general contractor with significant K-12 and public works portfolio. Overlaps with Cornerstone on public-sector construction, alternative delivery, and Western Washington geographic territory.

Broad incumbents

• Mortenson Construction: Large national general contractor with significant K-12, higher education, and healthcare practices plus developing mass timber expertise. Overlaps with Cornerstone on mass timber, alternative delivery, and institutional clients but operates at much greater scale nationally.
• Gilbane Building Company: National general contractor with a strong K-12 education practice and alternative delivery expertise. Compares to Cornerstone on public-sector K-12 focus, though serving a broader national footprint at much larger scale.
• Turner Construction Company: One of the largest U.S. general contractors with extensive K-12, healthcare, and civic portfolio. Comparable to Cornerstone on institutional client base and nonresidential general contracting, though operating at vastly greater national scale.
• Swinerton Builders: National general contractor with significant mass timber expertise, K-12 education portfolio, and Pacific Northwest presence. Comparable to Cornerstone on mass timber specialization, alternative delivery, and public-sector education clients.
• Skanska USA Building: Large international GC with strong K-12, healthcare, and civic portfolio across the U.S. Overlaps with Cornerstone on public-sector institutional work and alternative delivery, particularly in the Pacific Northwest where Skanska has a significant presence.

Regional players

• Hoffman Construction Company: Large PNW-headquartered general contractor with broader commercial, healthcare, and higher education portfolio. While larger and broader in scope than Cornerstone, it overlaps on alternative delivery methods, healthcare/municipal clients, and Pacific Northwest geography.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/cornerstone-general-contractors-inc.
• Instagraminstagram.com/cornerstonegci
• Xx.com/CornerstoneGCI
• Facebookfacebook.com/cornerstonegci

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cornerstone General Contractors