What Thienes Engineering Inc does

Thienes Engineering, Inc. (TEI) is a privately held civil engineering and land surveying firm founded in 1986 and headquartered in La Mirada, California. The company provides three interconnected professional services — Civil Engineering, Land Surveying, and Due Diligence — delivered in-house across the full project lifecycle from site selection through certificate of occupancy. Core technical capabilities span grading plans, hydrology and drainage design (including WQMP and SWPPP), storm drain and sewer design, street improvements, entitlement management, and a full suite of survey deliverables (ALTA, design surveys, construction staking, subdivision maps, condominium plans). The firm uses AutoCad Civil 3D as its primary design platform, supplemented by Trimble GPS, robotic total stations, and 3D laser scanners for field data capture.

TEI serves industrial, commercial, retail, residential, automotive, healthcare, hospitality, and institutional clients across Southern California, Nevada (Las Vegas and Henderson), and Arizona (Phoenix and Glendale). Named enterprise clients include Prologis, Goodman Group, Panattoni Development Company, Hillwood Investments, DCT Industrial, Crow Holdings Industrial, Lowe's Home Improvement, Kaiser Permanente, Wells Fargo, and multiple automotive dealer groups, alongside over 100 school district projects. Revenue is generated through project-based professional services fees, with no public pricing or revenue disclosures. The firm has completed over 5,000 projects totaling 120+ million square feet of designed development and serves 1,300+ clients, supported by 80+ employees including numerous licensed Civil Engineers and Land Surveyors. The business is founder-owned, self-funded through organic growth, and has no disclosed external investment, M&A activity, or ownership change across its 30+ year history.

Name

Thienes Engineering Inc

Legal name

Thienes Engineering, Inc.

Website

https://thieneseng.com

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

51–100 employees

Short description

Thienes Engineering is a privately held civil engineering and land surveying firm serving industrial, commercial, retail, and residential developers across Southern California, Nevada, and Arizona, with 80+ staff and over 5,000 completed projects.

Ownership category

akta.pro rank

Product category

Civil Engineering Services

NAICS

Engineering Services (54133)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industry

Construction Engineering & Constructability Consulting (BPAHAIAN)

Keywords

• Civil engineering services
• Land surveying services
• Site development design
• Drainage design solutions
• Due diligence consulting

Headquarters

HQ city

La Mirada

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, Others

Revenue model

1. Civil Engineering Services: Professional services revenue from civil engineering design and consulting for development projects including grading plans, storm drain design, sewer system design, street improvement design, and construction administration.
2. Land Surveying Services: In-house land surveying services including ALTA surveys, design surveys, construction staking, subdivision maps, record of surveys, lot line adjustments, parcel mergers, easement descriptions, and condominium plans.
3. Due Diligence Services: Independent site analysis and risk assessment services delivered to clients to identify potential issues associated with site development and related costs.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Thienes Engineering, Inc. is a civil engineering and land surveying firm providing integrated design, surveying, entitlement, and due diligence services for land development projects. Services span site selection through certificate of occupancy and cover grading plans, storm drain and sewer design, street improvements, WQMP/SWPPP, hydrology reports, construction administration, and full in-house surveying (ALTA, design surveys, construction staking, subdivision maps, condominium plans). The firm primarily serves industrial, commercial, retail, automotive, institutional, and residential developers across Southern California, Nevada, and Arizona.

Product overview

Thienes Engineering Inc is a civil engineering and land surveying firm (not a software company). The company operates as a single-service firm offering three interconnected core service lines: Civil Engineering Services, Land Surveying Services, and Due Diligence Services. The civil engineering and land surveying services are performed in-house and are delivered together across the full project lifecycle from site selection and land surveying through design and entitlement to certificate of occupancy. The due diligence service acts as a preliminary assessment offering that precedes or accompanies engineering and surveying engagements.

Differentiator

Problem solved

Functional benefit

Products and services

• Civil Engineering Services Full-range civil engineering services including grading plans, WQMP, SWPPP, hydrology reports, storm drain design, sewer system design, street improvement design, construction administration, and entitlement management for industrial, commercial, retail, and residential developments.
• Land Surveying Services In-house land surveying services including ALTA surveys, design surveys, construction staking, subdivision maps, record of surveys, lot line adjustments, parcel mergers, easement descriptions, and condominium plans.
• Due Diligence Services Independent site analysis and risk assessment services delivered to clients to identify potential issues associated with site development and related costs before acquisition or project planning.
• Research and Due Diligence Department Dedicated department offering independent analysis of site details and complexities, delivering issue assessment and cost analysis for land development projects.

Quantifiable outcome

• Over 5,000 projects successfully completed
• +3 more outcomes

Named customers16 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators6 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Michael Baker International: Major US engineering and consulting firm with a land development and civil engineering practice serving public and private sector clients. Comparable in core civil/surveying services and enterprise client base.
• Tetra Tech: Large engineering and consulting firm with water resources, environmental, and infrastructure practices. Overlaps with TEI on drainage, water quality (WQMP/SWPPP), and hydrology engineering services.
• Stantec: Global engineering, architecture, and environmental services firm with a strong land development practice across the US. Competes with TEI for industrial, commercial, and residential development engineering work in California and the Southwest.
• AECOM: Global infrastructure consulting firm with extensive US land development and civil engineering practices. Represents the scale end of the market and competes for the largest logistics, commercial, and institutional projects.
• Kimley-Horn: One of the largest US engineering consulting firms, providing land development, transportation, and environmental services nationally. Competes for the same industrial and commercial developer clients as TEI, particularly in California.
• TRC Companies: Engineering and consulting firm providing civil engineering, environmental, and infrastructure services to public and private clients. Comparable in civil/site development and survey capabilities.

Direct peers

• NV5 Global: Public engineering and consulting firm offering civil engineering, surveying, and environmental services with significant infrastructure and land development exposure. Direct competitor in the Southwest engineering services market.
• KPFF Consulting Engineers: Civil and structural engineering firm with deep roots in the Western US, providing site development, surveying, and land use services. Directly comparable in service offering, with similar project mix in commercial and industrial development.
• Psomas: California-based civil engineering, land surveying, and environmental services firm with a multi-office presence across the Western US. Closely comparable to TEI in service mix, scale, and Southwest US focus.

Regional players

• Dokken Engineering: California-based civil engineering firm focused on transportation, infrastructure, and land development in the Western US. Comparable regional peer with similar public and private sector client base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

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 Thienes Engineering Inc