Geotechnical Professionals

What Geotechnical Professionals does

Geotechnical Professionals Inc. (GPI) is a full-service geotechnical consulting and testing firm founded in 1989 and headquartered at 5736 Corporate Avenue, Cypress, California, in western Orange County. The firm provides geotechnical engineering services across the full project lifecycle — pre-acquisition and design-phase investigations, construction-phase observation and testing, and post-construction forensic investigation and long-term performance monitoring — for commercial developments, institutional projects, and public works in Southern California. The client base spans national retailers (Home Depot with over 120 projects; Walmart with over 25), healthcare systems (Kaiser Anaheim, St. Francis, Motion Picture and Television Fund Medical Center), port and transportation authorities (Port of Los Angeles, Port of Long Beach, John Wayne Airport, Long Beach Airport), federal and municipal agencies (U.S. Navy, Army Corps of Engineers, City of Los Angeles, LADWP, LAUSD), universities (UC Irvine, Cal State Fullerton), entertainment operators (MGM Grand Hotel and Casino), and industrial and residential developers (Panattoni, ProLogis, AvalonBay, Sares Regis Group).

GPI's core technical capabilities include comprehensive geotechnical investigations, geologic and seismic hazard evaluations (covering liquefaction, lateral spreading, and ground rupture), foundation design and inspection across spread footings, mats, drilled and driven piles, helical piles, and stone columns, and shoring and tie-back anchor inspection. The firm operates an in-house certified laboratory accredited by the California Division of the State Architect, the City of Los Angeles, and AASHTO for soil testing. GPI has completed over 2,500 geotechnical projects since founding, supported by five California Registered Geotechnical Engineers with more than 120 years of combined experience.

GPI generates revenue through project-based professional services fees for consulting and testing engagements, with growth driven by repeat business and referrals from a core client base. The firm is staffed by three named principals (Paul Schade, Donald Cords, and Justin Kempton, each with over 25 years of geotechnical experience), and field technicians averaging nearly 15 years of tenure. GPI is privately held, has disclosed no external equity, debt, or acquisition funding, and markets primarily through its company website and direct enterprise engagement with developers, agencies, and institutional project owners — a sales-led, relationship-based go-to-market motion.

Name

Geotechnical Professionals

Legal name

Geotechnical Professionals Inc.

Website

https://gpi-ca.com

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

11–50 employees

Short description

Geotechnical Professionals Inc. is a Southern California geotechnical consulting and testing firm founded in 1989, delivering pre-acquisition, construction-phase, and post-construction geotechnical services to commercial developers, institutional clients, and public agencies.

Ownership category

akta.pro rank

Product category

Geotechnical Engineering Services

NAICS

Engineering Services (541330), Testing Laboratories and Services (54138), Architectural, Engineering, and Related Services (5413)

SIC

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

akta.pro primary industry

Geotechnical & Subsurface Engineering Consulting (BPAHAIAB)

akta.pro secondary industries

Geotechnical Design, Engineering & Consulting (Analysis, Design, Peer Review) (IMAFAOAK), Geotechnical Investigation & Site Characterization (Boreholes, In-situ Testing, Lab Testing) (IMAFAOAG), Geotechnical Instrumentation & Monitoring (Settlement, Inclinometers, Piezometers) (IMAFAOAH), Geotechnical Site Investigation & Engineering Geology (Borings, Lab Testing) (EUAHAFAE)

Keywords

• Geotechnical consulting
• Foundation inspection services
• Soil testing laboratory
• Seismic hazard assessment
• Earthwork observation testing

Headquarters

HQ city

Cypress

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, Infrastructure, Marketing or Sales

Revenue model

1. Geotechnical Consulting Services: Professional consulting fees for geotechnical engineering services during pre-acquisition, design, and construction phases of projects. Revenue is generated through project-based engagements with repeat clients and referrals.
2. Geotechnical Testing Services: Laboratory and field testing services for soil, earthwork, and construction materials. Includes observation and testing during earthwork and foundation installation phases.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels1 record

Core offering

Geotechnical Professionals Inc. (GPI) is a full-service geotechnical consulting and testing firm providing engineering services across all project phases—Pre-Acquisition/Design (feasibility studies, geotechnical investigation, seismic hazard evaluation, infiltration testing, value engineering), Construction (earthwork observation and testing, foundation inspections, shoring and tie-back anchor inspections), and Post-Construction (forensic investigation, long-term performance monitoring). The firm operates a certified in-house soil testing laboratory and delivers foundation evaluations and earthquake hazard assessments for commercial, institutional, and public works projects.

Product overview

Geotechnical Professionals Inc. (GPI) is a full-service geotechnical consulting and testing firm that offers a unified suite of services rather than a software platform. The core offerings span three project phases: Pre-Acquisition and Design Phase services (feasibility studies, geotechnical investigation, geologic/seismic hazard evaluations, infiltration testing, value engineering), Construction Phase services (earthwork observation/testing, foundation inspections, shoring inspections, tie-back anchor testing), and Post-Construction Phase services (forensic investigation, long-term monitoring). GPI also operates an in-house certified laboratory (DSA, City of Los Angeles, AASHTO accredited) providing soil testing capabilities. Specialized expertise includes foundation evaluations for settlement-sensitive structures, earthquake hazard evaluations, slope stability assessment, earthwork criteria development, soft ground stabilization, and dewatering system design.

Differentiator

Problem solved

Functional benefit

Products and services

• Pre-Acquisition and Design Phase Geotechnical Services
• Construction Phase Geotechnical Observation and Testing Geotechnical observation and testing services during the construction phase, including earthwork observation and testing, foundation inspections for spread footings, mats, drilled and driven piles, helical piles, and stone columns, shoring and tie-back anchor inspections and testing, field condition consulting, and preparation of final reports. Used by contractors, developers, and public agencies to verify construction in accordance with geotechnical recommendations.
• Post-Construction Geotechnical Services Post-construction geotechnical services including forensic investigation related to geotechnical conditions and long-term site performance monitoring with geotechnical instrumentation. Used by owners and legal counsel to investigate performance issues and track long-term behavior of foundations and ground conditions.
• Geotechnical Laboratory Testing In-house laboratory soil testing and analysis services. The laboratory is certified by the California Division of the State Architect (DSA), the City of Los Angeles, and holds AASHTO accreditation for soil testing, supporting both internal projects and external clients needing accredited soil test results.
• Foundation Evaluations and Performance Monitoring Comprehensive, state-of-the-art foundation evaluations and performance monitoring for settlement-sensitive structures such as office buildings, bridges, power plants, and dam structures. Supports owners, structural engineers, and legal teams managing settlement risk and verifying foundation performance.
• Earthquake Hazard Evaluations Evaluation of earthquake-related geotechnical hazards including strong motion, ground rupture due to faulting, liquefaction, seismic settlement, and lateral spreading. Used by developers, institutions, and public agencies in seismic-prone Southern California to inform foundation design and risk assessment.

Quantifiable outcome

• Over 2,500 geotechnical projects completed since 1989
• +2 more outcomes

Named customers21 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

Two partnerships are on record, tiered accreditation and risk management.

• AASHTO (American Association of State Highway and Transportation Officials)accreditationOthersGPI's in-house laboratory holds AASHTO accreditation for soil testing through the AASHTO resource accreditation program. This accreditation validates the quality and reliability of GPI's laboratory testing procedures.
• Terra Insurancerisk managementOthersGPI participates in the Terra Insurance peer review program, undergoing rigorous review of technical and business operations every five years. This voluntary peer review demonstrates commitment to quality assurance and risk management practices.

Scale indicators5 records

Recent moves5 records

Expansion highlights3 records

Broad incumbents

• Terracon Consultants: Large national geotechnical, environmental, and materials testing firm offering the same core service categories as GPI but across a national footprint with thousands of employees.
• Kleinfelder: Major national engineering, geotechnical, and environmental consulting firm with overlapping service lines but a much broader geographic footprint and significantly larger scale than GPI.

Direct peers

• GeoEngineers: Geotechnical and earth science consulting firm with matching service portfolio in site characterization, foundation design, and construction observation for transportation, water, and development clients.
• Shannon & Wilson: Geotechnical and environmental consulting firm with directly comparable services in geotechnical investigation, foundation engineering, and seismic hazard evaluation for infrastructure and building projects.
• Twining Laboratories: California-based geotechnical engineering and materials testing firm with comparable in-house lab capabilities and overlapping public and private sector client base in Southern California.
• BSK Associates: California-headquartered geotechnical and materials testing firm with similar DSA/LA certifications, in-house lab, and direct overlap in commercial, institutional, and public-works projects across the state.
• Earth Mechanics: Southern California-focused geotechnical consulting firm offering geotechnical investigation, foundation engineering, and construction observation services to public and private clients.
• GeoCon West / GeoCon: Geotechnical and environmental consulting firm headquartered in California with comparable service offerings across geotechnical investigation, foundation design, and construction-phase observation/testing.
• Langan Engineering: Large private geotechnical and environmental engineering firm with overlapping services in site characterization, foundation design, and construction services — operates a similar principal-involved model at greater scale.
• Haley & Aldrich: Employee-owned geotechnical and environmental engineering firm with comparable service lines in site investigation, foundation engineering, and construction-phase services for commercial and infrastructure clients.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Geotechnical Professionals