What Signet Testing Labs does

Signet Testing Labs is a full-service engineering, construction inspection, and materials testing firm headquartered in Hayward, California. Founded in 1966, the company operates 10 locations throughout Northern California and serves as a long-established testing and inspection agency in the region. With more than 60 years of operating history, Signet has been engaged on marquee California infrastructure projects including the UC Davis Health Tower (a $3.75B healthcare project), the San Francisco International Airport (SFO) Expansion ($3B), and the Santa Clara-San Jose Wastewater project ($1.4B). The firm is a wholly-owned subsidiary of United Engineering Resources, Inc. (UER), a private holding/investment company, having been acquired in 2014 following prior ownership stints under URS Corporation (1999-2014) and Dames & Moore (1997-1999).

The company delivers materials testing, special inspections, geotechnical services, and quality assurance/quality control for construction and infrastructure projects. Signet maintains a broad stack of industry and regulatory accreditations - AASHTO/AAP, Caltrans, DSA LEA, HCAI, USACE, CCRL, ICC, AWS, ASNT, NICET, and ACI - and deploys ASNT Level III-certified technicians and OSHA-certified management. The firm is signatory to Operating Engineers Local 3 (OE3) labor union agreements, qualifying it for Project Labor Agreements on large public works, and is an AGC (Associated General Contractors) member. Signet generates revenue through fee-for-service contracts on construction and infrastructure projects, where testing and inspection fees typically represent a small percentage of overall construction value. Its client base spans healthcare, civic, education, entertainment, transportation, technology/biotech, infrastructure, and commercial sectors, serving both public agencies and private developers across Northern California.

Name

Signet Testing Labs

Legal name

Signet Testing Laboratories, Inc.

Website

https://signettesting.com

Company type

Private

Founded year

1966

Operating status

Operating

Headcount range

101–250 employees

Short description

Signet Testing Labs is a full-service engineering, construction inspection, and materials testing firm serving Northern California from 10 locations. Founded in 1966, it provides materials testing, special inspections, geotechnical services, and QA/QC for healthcare, civic, transportation, education, and commercial construction projects.

Ownership category

akta.pro rank

Product category

Construction Materials Testing & Inspection

NAICS

Testing Laboratories and Services (54138), Building Inspection Services (541350)

SIC

Services-Testing Laboratories (8734), Services-Engineering Services (8711)

akta.pro primary industry

Building Compliance Testing & Certification (Backflow, RPZ, Cross-Connection) (BPABAHAK)

akta.pro secondary industry

Third-Party Certification, Code Compliance & Regulatory Inspection (ASME/API/ISO) (EUAEAHAN)

Keywords

• Construction materials testing
• Special inspection services
• Geotechnical engineering services
• Non-destructive testing
• Construction quality assurance

Headquarters

HQ city

Hayward

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Special Inspections: Inspection services witnessing, recording, and reporting construction work per project specifications and California Building Code requirements. Services include reinforced concrete, structural steel welding/bolting, masonry, fireproofing, roofing, waterproofing, and asphalt testing.
2. Materials Testing: Laboratory and field testing of construction materials including soils, aggregates, asphalt, concrete, masonry, and structural steel.
3. Geotechnical Engineering: Geotechnical engineering services including foundation recommendations, earthwork observation, slope stability, and retaining wall supervision.
4. Non-Destructive Testing (NDT): NDT services including ultrasonic, magnetic particle, liquid penetrant inspection, ground penetrating radar, and floor flatness testing.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels3 records

Core offering

Signet Testing Labs provides independent third-party construction inspection and materials testing services including special inspections, QA/QC testing programs, geotechnical engineering, non-destructive testing (NDT), laboratory testing, and existing building surveys. Services are delivered to construction projects across commercial, civic, healthcare, education, entertainment, transportation, power/water, and tech/biotech sectors in Northern California, supported by an AASHTO/AAP-accredited laboratory and on-site dedicated testing facilities.

Product overview

Signet Testing Laboratories offers a comprehensive suite of construction inspection and materials testing services organized into six integrated core offerings: Special Inspections (on-site and fabrication shop inspections for structural elements, welding, fireproofing, and waterproofing), QA/QC Testing Programs (dedicated on-site laboratories and quality control management for large-scale projects), Geotechnical Engineering (soil analysis, foundation recommendations, and earthwork testing), Non-Destructive Testing (NDT including ultrasonic, magnetic particle, and GPR inspections), Laboratory Testing (AASHTO-accredited 18,500 sq ft facility for materials analysis), and Existing Building Survey (failure investigation and condition assessments). These services work together as an integrated quality experience, providing special inspections, materials testing, and engineering services for commercial, civic, healthcare, education, entertainment, transportation, power/water, and tech/bio construction projects throughout Northern California.

Differentiator

Problem solved

Functional benefit

Products and services

• Special Inspections Inspection and testing services witnessing, recording, and reporting construction work performed by contractors, including on-site structural inspections, fabrication shop inspections, field testing, materials verification and sampling, and non-destructive testing, in compliance with California Building Code requirements.
• QA/QC Testing Programs Quality assurance and quality control programs providing dedicated on-site laboratories with full-time project engineers and technicians, including mix design reviews, laboratory testing review, on-site laboratory testing facilities, and welder procedure specification services.
• Geotechnical Engineering Engineering services including construction observation and testing, geotechnical engineering analysis, classification testing, static strength testing, hydraulic conductivity testing, and earthwork testing for foundations, slopes, retaining walls, and soil conditions.
• Non-Destructive Testing (NDT) Non-destructive testing examinations administered by ASNT Level III professionals including ultrasonic, magnetic particle, liquid penetrant inspection, visual inspection, coating thickness, Schmidt hammer testing, Ground Penetrating Radar (GPR), and floor flatness/levelness testing.
• Laboratory Testing A 18,500 square foot AASHTO/AAP accredited laboratory providing full range of testing on construction and geotechnical materials including asphalt mixture, soil, aggregate, concrete, iron and steel testing, geotechnical analysis, and Caltrans certified laboratory services.
• Existing Building Survey Materials technology and failure investigation services consisting of field and laboratory testing, existing condition surveys, special testing services including structural load testing, reinforcing steel verification, crack monitoring, foundation surveys, anchorage assessments, and investigative services for deterioration and damage analysis.

Quantifiable outcome

• Over 1.4 million exposure hours without a lost time incident - demonstrating safety excellence
• +2 more outcomes

Named customers20 records

Segments8 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• United Engineering Resources, Inc. (UER)flagshipOthers · 1 January 2014Signet Testing Laboratories is a wholly-owned subsidiary of United Engineering Resources, Inc. (UER). United Engineering Resources acquired Signet in 2014. Signet remains headquartered in Hayward, CA as part of the UER family of companies.

Scale indicators8 records

Recent moves5 records

Expansion highlights3 records

Broad incumbents

• WSP: Global engineering professional services firm with testing and inspection capabilities (post-Wood Environment & Infrastructure, Golder) competing with Signet in California infrastructure.
• SGS: World's largest TIC firm with construction materials testing and inspection capabilities that compete with Signet on infrastructure and large commercial projects globally.
• Intertek: Global TIC platform with construction services including building inspection and materials testing — broader portfolio than Signet but directly competes on commercial construction projects.
• Bureau Veritas: Global testing, inspection and certification (TIC) major with a construction and infrastructure vertical that competes with Signet on large California and US mega-projects at greater scale.
• AECOM: Global engineering consultancy with construction services and materials testing capabilities — competes with Signet on California mega-project RFPs (airports, healthcare, transit).

Direct peers

• Terracon Consultants: Large US geotechnical and materials testing firm providing special inspections, NDT, and construction materials testing — directly comparable to Signet's service mix and customer profile.
• Kleinfelder: National engineering, testing, and inspection firm with strong geotechnical and construction materials testing practices directly overlapping Signet's services across multiple US regions including California.
• CTLGroup: Engineering services firm specializing in construction materials, failure investigation, and structural testing — overlapping with Signet's laboratory testing and existing building survey capabilities.
• Twining Inc. California-focused construction materials testing and special inspection firm based in Southern California — directly comparable in service offering, customer type, and regulatory expertise.
• Ninyo & Moore: California-based (San Diego) geotechnical and materials testing firm with strong healthcare, civic, and education project portfolios directly competing with Signet in the California market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/signet-testing-laboratories-inc-
• Facebookfacebook.com/signettesting

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 Signet Testing Labs