Zipper Geo Associates LLC

What Zipper Geo Associates LLC does

Zipper Geo Associates LLC is a private geotechnical and environmental consulting firm headquartered in Lynnwood, Washington, founded in 2012. The firm delivers four integrated service lines: geotechnical consulting (site evaluation, subsurface investigation, foundation and liquefaction analysis, expert witness support), geotechnical design (retaining walls, MSE walls, soil nail walls, soldier pile walls, landslide mitigation, using displacement-based seismic design and WSDOT k-stiffness methods), environmental consulting (Phase I/II ESAs, vapor intrusion, remedial investigations, risk-based cleanups, asbestos/lead-based paint assessments, regulatory negotiation), and construction-phase services (site grading observation, field testing, foundation observation, retaining wall load testing, stormwater infiltration verification). An in-house geotechnical laboratory supports cost-effective testing, and the firm has engineered well over one million square feet of retaining wall face across the greater Northwest and Canada.

The firm serves five customer segments: engineering and architectural firms (where ZGA typically acts as subconsultant), developers and real estate investment companies, banks and financial institutions requiring environmental due diligence, public sector agencies (transit, county, municipal, utility), and residential projects. Revenue derives from professional-services fees billed against project scope, with public sector work acquired through qualification-based selection and private work through direct engagement and repeat-client referrals. Pricing is quote-based and not publicly disclosed; the firm also publishes an internal compensation range ($27–$34/hr for a Staff Geo-Structural Designer) with full benefits and a 3% Simple IRA match.

Zipper Geo is privately held by its principals (no external investors disclosed), operates with 11–50 employees, and serves a seven-state Pacific Northwest footprint (Washington, Oregon, Idaho, Montana, Wyoming, Alaska, Utah) from a single Lynnwood office. Differentiators include 150 years of collective principal experience in the Pacific Northwest, GBA Peer Reviewed firm status, and King County Certified Small Contractor and Supplier (SCS) certification that qualifies the firm for large public works projects.

Name

Zipper Geo Associates LLC

Legal name

Zipper Geo Associates, LLC

Website

https://zippergeo.com

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

11–50 employees

Short description

Zipper Geo Associates LLC is a private, Lynnwood, Washington–based geotechnical and environmental consulting firm serving private developers, banks, engineering firms, and public agencies across the seven-state Pacific Northwest with site investigation, design, environmental, and construction-phase services.

Ownership category

akta.pro rank

Product category

Geotechnical and Environmental Consulting Services

NAICS

Engineering Services (54133), Environmental Consulting Services (54162), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Geotechnical Design, Engineering & Consulting (Analysis, Design, Peer Review) (IMAFAOAK)

akta.pro secondary industries

Geotechnical & Subsurface Engineering Consulting (BPAHAIAB), Geotechnical Site Investigation & Engineering Geology (Borings, Lab Testing) (EUAHAFAE), Geotechnical Investigation & Site Characterization (Boreholes, In-situ Testing, Lab Testing) (IMAFAOAG), Geotechnical Instrumentation & Monitoring (Settlement, Inclinometers, Piezometers) (IMAFAOAH)

Keywords

• Geotechnical consulting
• Environmental consulting
• Subsurface investigation
• Retaining wall design
• Foundation engineering

Headquarters

HQ city

Lynnwood

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

Revenue model

1. Geotechnical Consulting Services: Professional consulting services including site evaluation, subsurface investigation, foundation recommendations, and expert witness litigation support.
2. Geotechnical Design Services: Detailed design services for retaining walls, slopes, and geostructures including preparation of plans and specifications.
3. Environmental Consulting Services: Environmental due diligence, site investigation, remediation planning, and regulatory compliance services for commercial and industrial properties.
4. Construction Phase Services: Construction observation, field testing, and documentation services during construction execution.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

Zipper Geo Associates is a geotechnical and environmental consulting firm providing site evaluation, subsurface investigation, foundation recommendations, geotechnical design for retaining walls and slopes, environmental site assessments and remediation planning, and construction phase observation and testing services. The firm combines consulting, design, and field services across the project lifecycle for private and public sector clients in the Pacific Northwest.

Product overview

Zipper Geo Associates LLC is a geotechnical and environmental consulting firm offering four integrated service areas: Geotechnical Consulting, Geotechnical Design, Environmental Consulting, and Construction Services. The company specializes in site-specific solutions for underground challenges, combining consulting expertise with detailed design capabilities and construction phase support. Their services work together as a unified offering, guiding projects from initial site evaluation through design and into construction completion, particularly for projects in the Pacific Northwest region.

Differentiator

Problem solved

Functional benefit

Products and services

• Geotechnical Consulting
• Geotechnical Design
• Environmental Consulting
• Construction Services

Quantifiable outcome

• Designed over 1 million square feet of retaining wall face in the greater Northwest and Canada
• +2 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• AECOM: Global infrastructure consulting firm with significant geotechnical, environmental, and construction-services capabilities that bids on the same large PNW transit, transportation, and water projects ZGA supports as a subconsultant.
• Terracon: National geotechnical, environmental, and materials consulting firm with extensive U.S. footprint — competes in PNW markets for the same developer, lender, and public-sector engagements as Zipper Geo.
• Kleinfelder: Large national engineering, environmental, and construction services firm offering geotechnical and environmental consulting across all U.S. regions — competes for the same PNW infrastructure and private development work from a broader portfolio.
• Jacobs: Global engineering and professional services firm with extensive geotechnical, environmental, and construction-phase capabilities — competes for major PNW public-sector infrastructure programs where ZGA often serves as a subconsultant.
• Haley & Aldrich: National geotechnical and environmental consulting firm with strong practice in subsurface investigation, foundation engineering, and environmental site assessment — overlapping service lines with ZGA, particularly in environmental due diligence.
• WSP: Global professional services firm (which absorbed Golder Associates) with major PNW geotechnical and environmental practices — competes for large transit and infrastructure programs and frequently engages ZGA as a subconsultant.

Direct peers

• GeoEngineers: Washington/Pacific Northwest geotechnical and earth-science consulting firm serving the same mix of public agencies, developers, and engineering firms with geotechnical, environmental, and construction-support services.
• Aspect Consulting: Seattle-based earth and environmental consulting firm focused on the Pacific Northwest, providing geotechnical, environmental, and water-resource services to public and private clients — closely comparable in scale and scope.
• PanGEO Incorporated: Pacific Northwest geotechnical engineering firm specializing in subsurface investigation, foundation design, and construction support for transportation and infrastructure projects — directly competitive on service line and region.
• Shannon & Wilson: Seattle-headquartered geotechnical and environmental consulting firm with deep Pacific Northwest presence across transportation, transit, and infrastructure — directly comparable in service mix, geography, and client base to Zipper Geo.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/zipper-geo-associates

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 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 Zipper Geo Associates LLC