What Quatrefoil does

Quatrefoil, Inc. is a privately held landscape architecture and design firm founded in 1996 by Brian E. Bainnson and headquartered in Portland, Oregon. The firm is structured around two service divisions: Architectural Design (residential, historic, and design details covering doors, windows, flooring, cabinetry, lighting, railing, and ventilation) and Landscape Architecture (residential, healing and therapy gardens, and U.S. Fish and Wildlife Service projects). Services are delivered through a client-driven, interactive dialogue-based process and span schematic design, design development, construction documentation, site analysis, master planning, budget estimating, contract bidding, material acquisition, and site construction review. Pricing is not publicly disclosed; engagement scope is tailored to program, schedule, and budget requirements on a per-project basis.

The firm's go-to-market is sales-led and direct: clients engage Quatrefoil through a single, named contact channel (a Portland phone line and a single email address) and the firm relies on its website portfolio and word-of-mouth within the Pacific Northwest as its primary marketing channels. Operating geographies are limited to the Portland Metropolitan Area and Pacific Northwest, with professional registrations in Oregon and Washington. Notable customers include the U.S. Fish and Wildlife Service (five National Wildlife Refuges), Legacy Health System (healing gardens and therapeutic landscapes at Legacy Salmon Creek, Oregon Burn Center, Legacy RIO, and Legacy Trauma Center), City of Portland (Portland Memory Garden in Ed Benedict Park), Oregon Department of Parks and ODOT (Historic Columbia River Highway Bike Trail), City of Mosier (fifty-acre waterfront park), Mary's Woods, WFSC San Antonio, and Oregon Garden in Silverton. The firm has 11-50 employees, no disclosed funding, no parent company, and no M&A or partnership activity on record.

Revenue is professional-services based with no disclosed figures, ARR, or pricing model. The firm generates revenue through tailored project engagements across residential, institutional, healthcare, and government segments. There is no evidence of subscription, platform, or technology-product revenue, and no AI/ML capabilities are referenced. Distribution is direct (no resellers, partners, or third-party channels), and the firm is not active in any disclosed hiring buildout, geographic expansion, or product diversification beyond its existing service lines.

Name

Quatrefoil

Legal name

Quatrefoil, Inc.

Website

https://quatrefoilinc.net

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

11–50 employees

Short description

Quatrefoil, Inc. is a Portland, Oregon-based landscape architecture and design firm founded in 1996 by Brian E. Bainnson, providing personalized site design services to residential, healthcare, governmental, and recreational clients across the Pacific Northwest, with specialized practices in healing/therapy gardens and U.S. Fish and Wildlife Service refuge projects.

Ownership category

akta.pro rank

Product category

Landscape Architecture Services

NAICS

Landscape Architectural Services (54132), Architectural Services (541310)

akta.pro primary industry

Landscape Architecture & Site Design (BPAHAKAC)

akta.pro secondary industry

Commercial Landscape Design & Installation (HSAIABAJ)

Keywords

• Landscape architecture
• Architectural design
• Healing gardens
• Residential design
• Site planning

Headquarters

HQ city

Portland

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Landscape Architecture and Design Services: Personalized design services for residential to institutional projects. Services include schematic design, design development, construction documentation, site analysis, master planning, budget estimating, contract bidding, material acquisition, and site construction review.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Quatrefoil provides personalized landscape architectural and architectural design services for residential, commercial, institutional, and governmental projects. Its work spans schematic design, design development, construction documentation, site analysis, master planning, budget estimating, contract bidding, material acquisition, and site construction review, organized into Architectural Design and Landscape Architecture divisions.

Product overview

Quatrefoil, Inc. is a landscape architecture and design firm founded in 1996 and headquartered in Portland, Oregon. The company offers a unified portfolio of design services organized into two primary divisions: Architectural Design (covering residential, historic, and detailed design elements) and Landscape Architecture (encompassing residential, healing and therapy gardens, and U.S. Fish and Wildlife Service projects). The service offerings include design development, construction documentation, site analysis, and project management. Projects span residential gardens, therapeutic landscapes for healthcare facilities, and wildlife refuge enhancements. The company tailors services to client program, schedule, and budget requirements through an interactive dialogue-driven design process.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services Comprehensive architectural design services covering residential, historic preservation, and detailed design elements for doors, windows, flooring, cabinetry, lighting, railing, and ventilation, delivered as part of Quatrefoil's Architectural Design division.
• Landscape Architecture Services Personalized landscape architectural design services for all types of site design, integrating program, technical, and lifestyle needs through an interactive client-designer dialogue. Encompasses residential, healing & therapy, and U.S. Fish and Wildlife Service project work.
• Residential Landscape Design Residential landscape design including paving and steps, decks, pools and water features, gardens, garden structures, entries, and covered structures, tailored to homeowners' program, schedule, and budget.
• Healing & Therapy Garden Design Specialized therapeutic landscape design for healthcare settings, including healing and therapy gardens developed for Legacy Health System, Mary's Woods, WFSC San Antonio, and the John Callahan Garden.
• U.S. Fish and Wildlife Service Refuge Projects Landscape architecture projects for U.S. Fish and Wildlife Service National Wildlife Refuges, including Little Pend Oreille NWR, Tualatin River NWR, Ridgefield NWR, William L. Finley NWR, and Siletz Bay NWR.

Named customers8 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

Scale indicators1 record

Recent moves4 records

Expansion highlights3 records

Broad incumbents

• OLIN: Nationally recognized landscape architecture, urban design, and planning firm. Comparable core service line but materially larger and more diversified across geographies and project types than Quatrefoil.
• SWA Group: International landscape architecture, planning, and urban design practice. Overlaps directly with Quatrefoil on parks, public realm, and master planning work but at significantly greater scale and geographic reach.
• Sasaki Associates: Multi-disciplinary design and planning firm with a strong landscape architecture practice. Comparable on master planning and institutional campus work, but operates at much greater scale with broader service lines.
• James Corner Field Operations: High-profile landscape architecture and urban design firm. Comparable on public realm, park, and waterfront projects but with a global footprint and significantly larger project scale.
• Michael Van Valkenburgh Associates: Landscape architecture firm known for parks and public realm projects. Comparable service offering and design awards profile, but larger and East-Coast-based.

Direct peers

• Walker Macy: Portland-based landscape architecture and urban design firm with comparable public-sector, riverfront, and institutional project portfolios in the Pacific Northwest — directly overlapping with Quatrefoil on regional public work.
• GreenWorks PC: Portland-based landscape architecture practice with a similar mix of urban, parks, and ecological restoration projects; comparable firm size and Pacific Northwest client base.
• Mayer Reed: Pacific Northwest landscape architecture, urban design, and visual communications firm. Comparable in size and regional focus, with overlapping public-sector and parks clients in Portland and the broader PNW.
• Andropogon Associates: Ecological landscape architecture and planning firm with comparable expertise in healing gardens, restorative landscapes, and habitat-driven design — overlapping with Quatrefoil's therapy-garden and USFWS practices.

Regional players

• PLACE Landscape Architecture: Landscape architecture firm with comparable residential and small-institutional design focus in another U.S. region; similar firm size and design-led positioning though operating in a different geography.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/quatrefoil-inc

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Quatrefoil