What Webcor Builders does

Webcor Builders is a California-based commercial general contractor founded in 1971 and operating as a wholly-owned U.S. subsidiary of Obayashi Corporation, a publicly traded Japanese construction conglomerate. The company delivers large-scale building projects across ten market sectors including aviation, civic/government, education, healthcare, hospitality, infrastructure, mixed-use, office, and residential, with marquee clients including UCSF, UCSB, the University of California system, SFO, SFMOMA, Salesforce, Genentech, Samsung Semiconductor, and Illumina. Service delivery spans preconstruction, general contracting, project/construction management, and warranty, executed through multiple delivery methods (GMP, design-build, CMAR, IPD/IFOA, P3) on multi-year contract terms.

Webcor's underlying technical capability rests on four in-house self-perform craft groups (Webcor Concrete, Carpentry, Drywall, and Timber) combined with VDC/BIM-enabled preconstruction and a leadership position in sustainable construction - 100 LEED-certified buildings, 75% at Platinum or Gold, #16 on ENR's 2021 Top 100 Green Builders, and #1 by volume of green work. The Concrete group has demonstrated material innovation including a low-carbon tremie-crete mix (270 kg CO2-eq/m3 GWP vs. 430 traditional) co-developed with Keller and CEMEX for deep foundation applications. Core technology is digital-twin and BIM-driven project coordination rather than AI/ML systems.

The business model is project-based professional services revenue earned through construction fees, project management, and self-perform work, with no public pricing or distributor model. Customers are sourced via relationship-based enterprise business development and competitive procurement across both public sector (airports, transit, civic) and private commercial (technology, healthcare, cultural) segments. Following the October 2025 acquisition of GCON Inc., Webcor operates across 28 states with combined headcount exceeding 1,000 and reported revenue above $1.5 billion annually.

Name

Webcor Builders

Legal name

Webcor, LP

Website

https://webcor.com

Company type

Private

Founded year

1971

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Webcor Builders is a California-founded commercial general contractor and wholly-owned subsidiary of Japan's Obayashi Corporation, delivering large-scale building projects via general contracting, preconstruction, self-perform craft groups, and sustainable construction across 28 states with $1.5B+ in annual revenue.

Ownership category

akta.pro rank

Product category

Commercial Construction Services

NAICS

Commercial and Institutional Building Construction (23622), Nonresidential Building Construction (2362)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), General Bldg Contractors - Residential Bldgs (1520)

akta.pro primary industry

Office & Corporate Building Construction (IMAFACAA)

akta.pro secondary industry

Residential General Contracting (New Build) (IMAFAAAB)

Keywords

• Commercial construction services
• General contracting
• Construction management
• Sustainable building
• Preconstruction services

Headquarters

HQ city

San Francisco

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Construction Services Revenue: Webcor generates revenue through commercial construction projects as a general contractor, including new construction, renovation, tenant improvements, and specialty construction services. Revenue is project-based, earned through construction fees, project management, and self-perform work.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

Webcor Builders is a full-service commercial general contractor delivering large-scale building projects in California across aviation, civic, education, health, hospitality, infrastructure, mixed-use, office, and residential sectors. Core offerings include general contracting, preconstruction, project and construction management (PM/CM), warranty services, and four in-house self-perform craft groups (Concrete, Carpentry, Drywall, Timber) supported by VDC/BIM and sustainability expertise.

Product overview

Webcor Builders is a California-based commercial general contractor offering a comprehensive suite of construction services. The company's service portfolio centers on General Contracting and Preconstruction as core offerings, supplemented by four specialized self-perform craft groups: Webcor Concrete, Webcor Carpentry, Webcor Drywall, and Webcor Timber. Additional services include Project and Construction Management (PM/CM) and Warranty Services. Webcor operates across multiple market sectors including aviation, civic/government, cultural, education, health/science, hospitality, infrastructure, mixed-use, office, and residential. The company also provides VDC/BIM, sustainability, QA/QC, safety, and outreach services as integrated support functions.

Differentiator

Problem solved

Functional benefit

Products and services

• General Contracting Full-service general contracting for commercial construction projects, handling project execution and delivery from planning through completion for public and private clients.
• Preconstruction Early-stage project planning and consulting services including estimating, scheduling, VDC/BIM, sustainability planning, and constructability analysis for upcoming commercial projects.
• Webcor Concrete In-house concrete construction services with expertise in low-carbon concrete mixes, self-consolidating concrete (SCC), and innovative solutions for drilled-shaft foundations.
• Webcor Carpentry Rough carpentry and interior finishing services with specialized finish carpentry work and quality control measures during demanding finishes phase.
• Webcor Drywall Full spectrum drywall services including budget estimates, constructability analysis during preconstruction, and critical path management during construction.
• Webcor Timber Mass timber construction services including sustainable forestry guidance, design planning, structural comparisons, and field installation with in-depth lifecycle knowledge.
• Project and Construction Management (PM/CM) Client support and partnership services with emphasis on client advocacy, managing project and construction management needs throughout project lifecycle.
• Warranty Services Comprehensive warranty plans with proactive yearly inspections, maintenance access, and continued ticket system support for ongoing peace of mind after project completion.

Quantifiable outcome

• Low-carbon concrete achieving 270 kg CO2-eq/m3 GWP (37% below traditional 430 kg CO2-eq/m3)
• +4 more outcomes

Named customers13 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eight partnerships are on record, tiered minor and core.

• Sidley Austin LLPminorImplementation/ SI/ Consulting Partner · 20 October 2025Sidley advised Webcor in its acquisition of GCON, providing legal counsel for the transaction. Sidley is a global law firm that provided M&A advisory services for this acquisition.
• GCON Inc.coreStrategic or Co-development Partner · 1 January 2025Webcor acquired GCON in late 2025, with the transaction expected to close in Q4 2025. GCON is a full-service construction management firm based in Phoenix, AZ with expertise in technology projects including data centers and semiconductor work across 10 states. GCON operates separately under its existing leadership and brand.
• KellercoreStrategic or Co-development PartnerKeller is a project partner in the SFO West Field Garage 2 project, working with Webcor on developing and placing low-carbon concrete mix for drilled-shaft foundation piles. This partnership achieved a breakthrough in decarbonizing tremie-crete concrete.
• CEMEXcoreStrategic or Co-development PartnerCEMEX collaborated with Webcor and Keller on developing the low-carbon concrete mix for deep foundations at SFO. The team spent four months at CEMEX's Livermore laboratory developing and testing the mixture, achieving significant carbon reduction.
• Carbon Leadership Forum (CLF)minorOthersWebcor is a member of the Carbon Leadership Forum, taking steps to address decarbonization in sustainable construction including material reuse, construction waste, and employee wellness.
• US Green Building Council-CA (USGBC-CA)minorOthersWebcor is a member of USGBC-CA, supporting green building standards and LEED certification initiatives.
• Association of General Contractors (CA)minorOthersWebcor is a member of the California Association of General Contractors, supporting industry advocacy and standards.
• Contra Costa CountycoreOthersContra Costa County is the client owner for the $150 million East County Service Center project in Brentwood, CA. Progressive design-build team includes Webcor, Perkins&Will, BKF, and MIG.

Scale indicators11 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Swinerton: Swinerton is a California-headquartered commercial general contractor with comparable self-perform capabilities and overlapping markets in commercial, healthcare, education, and hospitality construction. Directly competes for projects in Webcor's core California geography.
• Gilbane Building Company: Gilbane is a large privately held family-owned construction management and general contracting firm with strong institutional, healthcare, education, and government practices. Comparable service portfolio, similar client types, and similar delivery methods.
• DPR Construction: DPR Construction is a privately held California-founded commercial general contractor with comparable scale, similar self-perform capabilities, and overlapping market sectors (healthcare, higher education, life sciences, advanced technology). It is the closest direct peer to Webcor in terms of business model and customer mix.
• Suffolk Construction: Suffolk is a privately held national general contractor focused on commercial, healthcare, higher education, and life sciences sectors. Its technology-enabled project delivery approach and similar target markets make it a relevant peer to Webcor.
• McCarthy Building Companies: McCarthy is a large national employee-owned general contractor with a strong healthcare, education, and laboratory construction focus. Its self-perform concrete and craft capabilities and institutional client orientation closely mirror Webcor's model.
• Hensel Phelps: Hensel Phelps is a large employee-owned commercial general contractor with strong institutional, government, healthcare, and aviation practices. Comparable delivery methods (design-build, CMAR, IPD) and similar marquee-client orientation make it a close peer to Webcor.
• Clark Construction Group: Clark Construction is a large privately held general contractor delivering major commercial, civic, education, and healthcare projects nationwide. Comparable scale, similar delivery methods, and similar institutional client mix make it a relevant peer.

Broad incumbents

• Turner Construction Company: Turner is the largest U.S. commercial general contractor by revenue and competes for the same institutional, healthcare, aviation, and education projects that anchor Webcor's portfolio. Operates nationally with substantially greater scale.
• Skanska USA: Skanska is a large international construction firm with a substantial U.S. commercial building presence. Competes for the same large institutional and commercial projects as Webcor and brings international parent backing similar to Obayashi.

Emerging players

• Mortenson Construction: Mortenson is a top-tier national GC with leading market share in data center and mission-critical construction—the exact segment Webcor entered via the GCON acquisition. It is an emerging competitor in Webcor's newly expanded geography and capability.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key highlights7 records

Customer concentration

• Xx.com/webcorbuilders
• Facebookfacebook.com/WebcorBuilders
• LinkedInlinkedin.com/company/webcor-builders
• Instagraminstagram.com/webcorbuilders

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Webcor Builders