Okahara and Associates

What Okahara and Associates does

Okahara and Associates, Inc. is a Hawaii-incorporated, multi-discipline engineering consulting firm founded in 1979, headquartered in Hilo with a second office in Honolulu. The firm delivers three core service lines: civil engineering (site work, subdivision, highway, water/wastewater systems, hydrologic and hydraulic design, watershed studies, permitting), mechanical engineering (pump stations, HVAC, plumbing, fuel systems, energy efficiency, retro-commissioning), and landscape architecture (design, irrigation, lighting, construction administration, ISA-certified arborist and NRPA-certified playground safety inspection). Service delivery is performed by licensed civil and mechanical engineers and a registered landscape architect, with LEED-accredited staff supporting sustainable and historic-building projects.

The firm is privately held, minority-owned, and operates as a low-overhead local professional services business. Revenue is generated through project-based fees for design, consulting, and construction administration. Its GTM motion is sales-led and relationship-driven, leveraging direct engagement with federal, state, and local government agencies alongside private developers and architects; named public-sector clients include the City and County of Honolulu, Hawaii Department of Transportation, Federal Highway Administration, County of Hawaii, Hawaii Air National Guard, and Department of Public Safety.

The business has shown continuity rather than expansion: a stable 11-50 headcount, no M&A, no funding activity, and operations confined to Hawaii. The competitive position rests on multi-decade incumbency, deep local regulatory and watershed expertise, and a sustained track record of regional engineering and workplace-culture awards (ACECH, ASCE, FHWA, Hawaii Business Magazine). No technology platform, AI/ML capability, or productized software layer is present; service delivery is labor-led by credentialed professionals.

Name

Okahara and Associates

Legal name

Okahara and Associates, Inc.

Website

https://okahara.com

Company type

Private

Founded year

1979

Operating status

Operating

Headcount range

11–50 employees

Short description

Okahara and Associates is a Hawaii-based, multi-discipline engineering consulting firm founded in 1979, offering civil, mechanical, and landscape architecture services to federal, state, and local government agencies and private developers from offices in Hilo and Honolulu.

Ownership category

akta.pro rank

Product category

Engineering Consulting Services

NAICS

Architectural, Engineering, and Related Services (5413), Engineering Services (541330), Landscape Architectural Services (54132), Environmental Consulting Services (54162)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)

akta.pro secondary industries

Instrumentation, Controls & Automation Engineering Consulting (BPAHAIAM), Environmental Impact Assessment (EIA) & Due Diligence (BPAHAJAB), Water, Wastewater & Stormwater Compliance (BPAHAJAJ)

Keywords

• Civil engineering consulting
• Mechanical engineering services
• Landscape architecture design
• Infrastructure design services
• HVAC and plumbing design

Headquarters

HQ city

Hilo

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consulting Services: Professional engineering consulting services including civil engineering, mechanical engineering, and landscape architecture. Revenue is generated through project-based fees for design, consulting, and construction administration services.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Okahara and Associates, Inc. is a Hawaii-based multi-discipline engineering consulting firm providing civil engineering, mechanical engineering, and landscape architecture services for government and private-sector clients. Engagements span site development, highways, water and wastewater systems, HVAC, plumbing, pump and fuel systems, and landscape design, delivered through project-based professional services including design, permitting, and construction administration.

Product overview

Okahara and Associates, Inc. is a multi-discipline engineering consulting firm offering three core service lines: Civil Engineering Services, Mechanical Engineering Services, and Landscape Architecture Services. The Civil Engineering Services practice handles site development, infrastructure, utilities, and planning studies. Mechanical Engineering Services covers HVAC, plumbing, pump stations, fuel systems, and energy efficiency. Landscape Architecture Services provides design, irrigation, lighting, construction management, and arborist consultations. Together, these integrated services enable the firm to deliver comprehensive project solutions from concept through construction for clients across Hawaii's public and private sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Civil Engineering Services Multi-disciplinary civil engineering consulting for private sector and government clients across Hawaii, covering site work design, subdivision design, highway design, water system design, wastewater system design, hydrologic/hydraulic design, watershed studies, and permitting.
• Mechanical Engineering Services Mechanical engineering consulting including pump station design, HVAC system design, plumbing system design, fuel system design, energy efficiency design, and retro-commissioning, with capabilities in LEED certification projects, historical building work, and ADA upgrades.
• Landscape Architecture Services Professional landscape architecture services including landscape design, irrigation design, landscape lighting design, landscape construction management and consultation, ISA certified arborist consultation, and NRPA certified playground safety inspections.

Named customers8 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators2 records

Recent moves4 records

Expansion highlights3 records

Broad incumbents

• AECOM: Global engineering and infrastructure consulting firm with active Hawaii operations pursuing large federal and state transportation, water, and environmental projects — sets the competitive ceiling on mega-projects Okahara can pursue.
• Stantec: International engineering, architecture, and environmental firm with established Hawaii operations in water, infrastructure, and environmental services — broad incumbent competing on similar RFPs.
• WSP: Global professional services firm with significant infrastructure, water, and environmental engineering capabilities and Hawaii presence — broad incumbent competing for the same DOT, FHWA, and municipal contracts.
• HDR Inc. Large U.S. engineering firm with deep transportation, water, and federal-design practices — competes with Okahara for federal and state highway and water infrastructure work.

Direct peers

• RM Towill Corporation: Hawaii-based engineering and land surveying firm with civil engineering, planning, and GIS capabilities — a closely comparable local competitor serving government and private clients in the same geography.
• SSFM International: Hawaii-headquartered multi-discipline engineering and architectural firm providing civil, mechanical, structural, and electrical engineering — directly comparable in geography, service mix, and government-client focus.
• Wilson Okamoto Corporation: Honolulu-headquartered engineering firm offering civil, structural, and environmental engineering with a strong Hawaii public-sector portfolio — direct head-to-head competitor for state and county infrastructure work.

Regional players

• Bowers + Kubota Consulting: Hawaii-based design, engineering, and construction management firm serving local government and military clients — comparable multi-discipline local competitor operating in the same island geography.

Emerging players

• Carollo Engineers: Specialist water and wastewater engineering firm — overlaps directly with Okahara's water system, wastewater, and watershed practices, particularly on municipal utility projects.
• Brown and Caldwell: Environmental engineering and consulting firm focused on water, wastewater, and environmental compliance — directly comparable to Okahara's EHS-adjacent water and wastewater design work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles15 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 Okahara and Associates