Cornerstone Architectural

What Cornerstone Architectural does

Cornerstone Architectural Group is a Seattle-area (Kenmore, Washington) architecture firm founded in 1993 that provides design, building envelope consulting, and sustainable-design services to public and private clients across the Pacific Northwest. Its portfolio spans K-12 educational facilities, federal and municipal government buildings, commercial real estate, healthcare, and custom residential work. Notable projects include the North Thurston High School (~$50.6M construction value), Cedar Trails Elementary (~$36M), and Clark Elementary (~$30.7M), alongside multi-location work for the U.S. Postal Service, the Port of Seattle, and the World Trade Center West.

The firm combines core architectural practice with a specialized building envelope consulting practice, including services that require Registered Roof Consultant (RRC) and Registered Roof Observer (RRO) credentials. It pursues sustainability credentials such as Salmon Safe certification and LEED Silver on selected projects, and its team includes LEED AP and AIA-credentialed professionals led by Managing Principal André Coppin and Principals Steven Barnes and Marc Jenefsky.

Revenue mechanics follow standard professional services project fees, typically scoped as a percentage of construction value on institutional and commercial work and as fixed or hybrid fees on residential projects. The firm is privately held with no external funding identified, operates with approximately 15 staff, and competes primarily through regional relationships, specialized envelope expertise, and a track record of public-sector delivery rather than scale or technology differentiation.

Name

Cornerstone Architectural

Legal name

Cornerstone Architectural Group

Website

https://cornerstonearch.com

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

11–50 employees

Short description

Cornerstone Architectural Group is a Kenmore, Washington-based architecture firm founded in 1993 that delivers sustainable design and building envelope consulting for K-12, government, commercial, healthcare, and residential clients across the Pacific Northwest.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (541310), Architectural Services (54131), Landscape Architectural Services (541320), Interior Design Services (54141)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industries

Civil & Structural Engineering Consulting (BPAHAIAA), Landscape Architecture & Site Design (BPAHAKAC)

Keywords

• Architectural design services
• Sustainable building design
• Building envelope consulting
• Educational facility architecture
• Commercial building design

Headquarters

HQ city

Kenmore

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Architecture and Design Services: Project-based architecture and design services for educational, commercial, government, and residential buildings. Revenue generated through design fees, project management, and construction administration services.
2. Building Envelope Consulting: Technical consulting services for building envelope systems including design review, specification writing, and installation observation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Cornerstone Architectural Group provides professional architectural design, project management, and construction administration services for educational, commercial, government, and residential buildings. The firm's signature capability is building envelope consulting, which covers precision design of roofing, exterior wall systems, air barriers, vapor barriers, and waterproofing to manage energy, moisture, and climate. Sustainability practices—including energy modeling, solar PV integration, natural and artificial daylighting, natural ventilation, LID site development, and green roofing—are embedded into every project.

Product overview

Cornerstone Architectural Group is a Seattle-based architecture firm offering professional design services across five core building categories: Educational Buildings (K-12 and higher education), Commercial Buildings (retail, office, mixed-use), Government Buildings (federal, state, municipal), Residential Buildings (single-family and multi-family), and Building Envelope consulting. The firm operates as a unified service offering rather than a platform-plus-modules architecture. These core services are complemented by specialized sustainability offerings including Solar Energy Integration, Natural and Artificial Daylighting, Natural Ventilation, LID Site Development, Green Roofing, Energy Modeling, Salmon Safe Certification, and Commissioning. The firm serves projects from design through construction observation and close-out, with particular expertise in building envelope consulting and sustainable design practices.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Hotel Terra achieved LEED Silver certification
• +3 more outcomes

Named customers14 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Mithun: Seattle-headquartered architecture, planning, and landscape firm with integrated sustainability and education/community practice. Comparable for its sustainability-led design philosophy and overlap in educational and civic project types.
• Olson Kundig: Seattle architecture firm recognized for high-design residential, hospitality, and civic work in the Pacific Northwest. Comparable for its PNW geographic focus and award-recognized residential and hospitality portfolio similar to Cornerstone's Deide Residence and Hotel Terra work.
• Miller Hull Partnership: Seattle-based architecture firm with a strong sustainability and building envelope focus serving education, civic, and commercial clients in the Pacific Northwest. Directly comparable in discipline mix (architecture + envelope/sustainability) and regional footprint.
• ZGF Architects: Architecture firm with major offices in Seattle and Portland and a long-standing reputation for sustainable, high-performance design across civic, healthcare, and education sectors. Comparable in sustainability expertise and Pacific Northwest delivery, though substantially larger in scale.
• NAC Architecture: Architecture firm specializing in K-12 and higher education design across the Western U.S., including school modernization and replacement projects. Comparable for its education-heavy project mix and public-sector delivery model.
• BLRB Architects: Pacific Northwest architecture firm with deep K-12 and higher education expertise, including school modernization programs. Closely comparable for its primary education vertical and PNW public-sector client base.
• Mahlum Architects: PNW architecture firm with deep K-12, healthcare, and higher education practices, known for sustainable design. Comparable in client verticals (school districts, healthcare, civic) and Pacific Northwest geographic concentration.
• LMN Architects: Seattle-based architecture firm serving civic, education, and commercial clients with an emphasis on design performance and sustainability. Comparable for Pacific Northwest region, education and civic client base, and integrated sustainability practice.

Broad incumbents

• Perkins&Will: Global architecture firm with a strong sustainable design practice (LEED, Living Building Challenge) and large education, civic, and healthcare portfolios. Comparable for sustainability methodology and overlap in education and civic project types, though significantly larger and geographically diversified.

Emerging players

• RDH Building Science: Building envelope and building science consulting firm with offices across North America, focused on enclosure performance, energy, and durability. Comparable for the building envelope consulting specialty that underpins Cornerstone's differentiated practice.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/cornerstone-architectural-group-ps

Revenue estimate

Valuation estimate

Number of profiles

Profiles15 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 Architectural