Triad/Holmes Associates
Triad/Holmes Associates is a privately held California civil engineering and land surveying firm, founded in 1994, delivering feasibility, design, and survey services across three offices in Mammoth Lakes, Bishop, and Redwood City. It serves commercial, residential, institutional, and public works clients in the Eastern Sierra and San Francisco Bay Area.
- Company typePrivate
- Founded1994
- HeadquartersMammoth Lakes, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Triad/Holmes Associates does
Triad/Holmes Associates is a privately held civil engineering and land surveying firm headquartered in Mammoth Lakes, California, operating across three offices in Mammoth Lakes, Bishop, and Redwood City. The firm was formed in 1994 from the merger of Triad Engineering (established 1979) and Holmes Engineering and Development Company (established 1963), giving it more than 30 years of continuous operation in California's Eastern Sierra and more recently in the San Francisco Bay Area.
The company delivers two core service lines: civil engineering (feasibility studies, improvement plans, grading and drainage design, roadway design, site planning, subdivision design, erosion control, SWPPP) and land surveying and mapping (boundary surveys, construction staking, topographic surveys, parcel maps, subdivision maps, ALTA/title insurance surveys, legal descriptions, and specialty surveys). Project work is executed using CAD systems, design software, and inter-office communication technology that supports electronic or hard-copy deliverable delivery. Staff totals over 20 employees, including three Licensed Civil Engineers and two Licensed Land Surveyors, with licensed employees eligible to advance to principal/equity-holder status.
Triad/Holmes Associates generates revenue through professional services engagements billed on a per-project basis to commercial, residential, institutional, and public works clients. The firm operates a sales-led, referral-driven go-to-market model with no identified external marketing channels, no subsidiaries, no external funding, and no parent company; distribution is purely direct through the three California offices, supported by principal or branch manager assignment to each project for quality assurance.
Triad/Holmes Associates firmographics
Firmographics- Name
- Triad/Holmes Associates
- Legal name
- Triad/Holmes Associates
- Website
- https://thainc.com
- Company type
- Private
- Founded year
- 1994
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Triad/Holmes Associates is a privately held California civil engineering and land surveying firm, founded in 1994, delivering feasibility, design, and survey services across three offices in Mammoth Lakes, Bishop, and Redwood City. It serves commercial, residential, institutional, and public works clients in the Eastern Sierra and San Francisco Bay Area.
- Ownership category
- akta.pro rank
Triad/Holmes Associates industry classification
Industry- Product category
- Civil Engineering and Land Surveying Services
- NAICS
- Architectural, Engineering, and Related Services (5413), Surveying and Mapping (except Geophysical) Services (541370)
- SIC
- Services-Engineering Services (8711)
- akta.pro primary industry
- Site Assessment & Remediation (Phase I/II, Cleanup Oversight) (BPAHAJAC)
- akta.pro secondary industry
- Water, Wastewater & Stormwater Compliance (BPAHAJAJ)
Keywords
Where Triad/Holmes Associates is headquartered
LocationHeadquarters
- HQ city
- Mammoth Lakes
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
Triad/Holmes Associates business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales
Revenue model
- Civil Engineering Services: Professional services revenue from civil engineering project work including feasibility studies, improvement plans, grading/drainage designs, roadway designs, and construction support services. Billed on a per-project basis.
- Land Surveying and Mapping Services: Professional services revenue from land surveying including boundary surveys, construction staking, topographic surveys, parcel maps, subdivision maps, ALTA surveys, and title insurance surveys. Billed on a per-project basis.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels1 record
Triad/Holmes Associates product offering
Product offeringCore offering
Triad/Holmes Associates is a California-based civil engineering and land surveying firm providing feasibility studies, improvement plans, grading and drainage design, roadway design, site planning, subdivision design, erosion control plans, sewage disposal system design, and storm water pollution prevention plans (SWPPP), along with land surveying and mapping services including boundary surveys, construction staking, topographic surveys, parcel maps, subdivision maps, ALTA/title insurance surveys, legal descriptions, and specialty surveys. Services are delivered through three regional offices in Mammoth Lakes, Bishop, and Redwood City for commercial, residential, institutional, and public works clients.
Product overview
Triad/Holmes Associates offers two core service lines: Land Surveying Services and Civil Engineering Services. These services are delivered through three regional offices (Mammoth Lakes, Bishop, and Redwood City) in California, with the team working collaboratively across all locations to serve clients in the Eastern Sierra and San Francisco Bay Area. The firm provides a complete project lifecycle from planning and design through construction support services.
Differentiator
Problem solved
Functional benefit
Products and services
- Civil Engineering Services Full-service civil engineering for commercial, residential, institutional, and public works projects, including feasibility studies, improvement plans, grading and drainage design, roadway design, site planning, subdivision design, erosion control plans, sewage disposal system design, and storm water pollution prevention plans (SWPPP). Delivered by three Licensed Civil Engineers from offices in Mammoth Lakes, Bishop, and Redwood City.
- Land Surveying and Mapping Services Comprehensive land surveying and mapping services including boundary surveys, construction staking, topographic surveys, parcel maps, subdivision maps, ALTA/title insurance surveys, legal descriptions, condominium maps, lot line adjustments, building location surveys, elevation certificates, flood/FEMA certificates, and specialty surveys. Delivered by two Licensed Land Surveyors for commercial, residential, and institutional clients.
Companies that use Triad/Holmes Associates
Customer profileSegments4 records
Ideal customer profiles3 records
Triad/Holmes Associates technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Triad/Holmes Associates partnerships and signals
Strategic signalScale indicators3 records
Recent moves3 records
Expansion highlights3 records
Triad/Holmes Associates competitors and assessment
Company assessmentBroad incumbents
- Tetra Tech: Global consulting and engineering firm with strong water resources and infrastructure practices, including stormwater-related work that overlaps with Triad/Holmes's SWPPP and drainage services.
- Stantec: Global engineering, architecture, and environmental services firm with a large California presence (and now owner of Psomas). Overlaps with Triad/Holmes on civil engineering and surveying work but operates at much greater scale and breadth.
- AECOM: Global infrastructure consulting firm competing for large public-works and development engineering contracts in California. A broad incumbent in the same overall civil engineering space.
Direct peers
- Psomas: California-based civil engineering and land surveying firm with comparable dual-service offering (civil + surveying) and West Coast regional focus. Recently acquired by Stantec, but remains a directly comparable peer in California markets.
- Sandis Civil Engineers: Bay Area-based civil engineering firm specializing in land surveying, design, and construction support for public and private clients. Comparable in scale and California footprint.
- BKF Engineers: California-based civil engineering firm serving residential, commercial, and public-sector clients across the Bay Area and beyond. Direct competitor with similar service mix and California geography.
- Wallace Group: California civil engineering and surveying firm serving public and private clients. Comparable regional professional-services model with civil and surveying capabilities.
- Kier & Wright Civil Engineers and Surveyors: Northern California civil engineering and land surveying firm with a long operational history. Directly comparable service portfolio and regional base.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat3 records
Key risks5 records
Key highlights6 records
Customer concentration
Triad/Holmes Associates social profiles
Digital presenceTriad/Holmes Associates financial estimates
Financial estimateRevenue estimate
Valuation estimate
Triad/Holmes Associates leadership team
Management profileNumber of profiles
Triad/Holmes Associates funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Triad/Holmes Associates M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Triad/Holmes Associates
What does Triad/Holmes Associates do?
Triad/Holmes Associates is a California-based civil engineering and land surveying firm providing feasibility studies, improvement plans, grading and drainage design, roadway design, site planning, subdivision design, erosion control plans, sewage disposal system design, and storm water pollution prevention plans (SWPPP), along with land surveying and mapping services including boundary surveys, construction staking, topographic surveys, parcel maps, subdivision maps, ALTA/title insurance surveys, legal descriptions, and specialty surveys. Services are delivered through three regional offices in Mammoth Lakes, Bishop, and Redwood City for commercial, residential, institutional, and public works clients.
Is Triad/Holmes Associates a public or private company?
Triad/Holmes Associates is a private company. It is classified as management employee owned and is currently operating.
When was Triad/Holmes Associates founded?
Triad/Holmes Associates was founded in 1994. It employs 11 to 50 people.
Where is Triad/Holmes Associates based?
Triad/Holmes Associates is headquartered in Mammoth Lakes, United States, in the North America region.
How does Triad/Holmes Associates make money?
Two revenue lines are on record. Civil Engineering Services are the primary driver. The others are land Surveying and Mapping Services.
Who are Triad/Holmes Associates's main competitors?
Broad incumbents on record are Tetra Tech, Stantec and AECOM. Direct peers are Psomas, Sandis Civil Engineers, BKF Engineers, Wallace Group and Kier & Wright Civil Engineers and Surveyors.
Does Triad/Holmes Associates have an API?
No public API is recorded for Triad/Holmes Associates.
What industry is Triad/Holmes Associates in?
Triad/Holmes Associates's product category is Civil Engineering and Land Surveying Services. Its primary akta.pro industry code is BPAHAJAC, Site Assessment & Remediation (Phase I/II, Cleanup Oversight), with a secondary code of BPAHAJAJ, Water, Wastewater & Stormwater Compliance. Its NAICS code is 5413 and its SIC code is 8711.