Quadriga
Quadriga is a Sacramento-based landscape architecture firm founded in 1997 that delivers master planning, parks, healthcare and educational campus design, and sustainable urban landscape projects for Northern California institutional clients.
- Company typePrivate
- Founded1997
- HeadquartersSacramento, United States
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Quadriga does
Quadriga is a Sacramento-based landscape architecture and planning firm founded in 1997, operating a second studio in Santa Rosa, California. The firm provides full-service landscape architecture — master planning, park and recreation design, healthcare facility landscape, educational campus landscape, housing and hospitality landscape, civic and urban design, and environmental/sustainable design — to institutional clients across Northern California. Technical capabilities include biophilic design applied to healthcare facilities such as the UC Davis Tschannen Eye Institute, LEED-certified project delivery (with multiple LEED Gold certifications within the UC and CSU systems), and green stormwater infrastructure encompassing bioswales, rain gardens, and stormwater planters. Quantified outcomes include treatment of more than six acres of urban runoff via the San Pablo Green Stormwater Spine and capture of 500,000+ gallons of stormwater at Harmony Union School District.
The firm operates a relationship-driven B2B professional services model, obtaining work through established client partnerships rather than competitive bidding on individual projects. Revenue is generated through negotiated, project-based professional services fees across six practice areas, with a portfolio spanning universities (UC Davis, Sacramento State, Sonoma State, Chico State), community colleges (Santa Rosa Junior College), healthcare systems (Sutter Health, Yountville Veterans Home), government agencies (California DGS, City of Sacramento, City of Roseville), affordable housing developers (MidPen Housing), and private clients (Exchange Bank, American AgCredit). A small 6-person collaborative studio led by two Principals — Christine Talbot and John Suesens, each with 25+ years of experience — executes projects through partnerships with architecture and engineering firms such as HPI Architecture, BkF Engineers, TLCD Architecture, and HGA Architects. The firm holds no venture capital or private equity backing and is privately held under Quadriga Inc.
Quadriga firmographics
Firmographics- Name
- Quadriga
- Legal name
- Quadriga Inc.
- Website
- https://quadriga-inc.com
- Company type
- Private
- Founded year
- 1997
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Quadriga is a Sacramento-based landscape architecture firm founded in 1997 that delivers master planning, parks, healthcare and educational campus design, and sustainable urban landscape projects for Northern California institutional clients.
- Ownership category
- akta.pro rank
Quadriga industry classification
Industry- Product category
- Landscape Architecture Services
- NAICS
- Landscape Architectural Services (541320)
- akta.pro primary industry
- Landscape Architecture & Site Design (BPAHAKAC)
- akta.pro secondary industry
- Commercial Landscape Design & Installation (HSAIABAJ)
Keywords
Where Quadriga is headquartered
LocationHeadquarters
- HQ city
- Sacramento
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Quadriga business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Others
Revenue model
- Professional Services - Landscape Architecture: Quadriga generates revenue through providing landscape architecture and site design services to institutional clients including universities, public agencies, school districts, and private developers. Projects are obtained through relationship-based business development with repeat clientele.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | — | Professional services fee structures vary by project scope, complexity, and client requirements. No standard pricing tiers are publicly available. |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels1 record
Quadriga product offering
Product offeringCore offering
Quadriga is a California-based landscape architecture and planning firm providing full-service design for parks, civic spaces, educational campuses, healthcare facilities, housing developments, and environmental projects. The firm delivers master planning, design development, construction documentation, and construction administration, with specialized expertise in biophilic design, LEED-certified projects, and sustainable stormwater infrastructure. Work is obtained through long-term client relationships with universities, public agencies, school districts, healthcare systems, and private developers across Northern California.
Product overview
Quadriga is a landscape architecture firm offering comprehensive design services organized around several practice areas: Park and Recreation Design, Healthcare Facility Landscape Design, Educational Campus Landscape Design, Housing and Hospitality Landscape Design, Civic and Urban Design, and Environmental and Sustainable Design. The firm provides full-service landscape architecture from master planning through construction administration, with particular expertise in LEED-certified projects, therapeutic healing gardens, campus planning, and urban infill developments. Projects span parks, civic spaces, healthcare campuses, educational institutions, housing developments, and environmental mitigation sites throughout California.
Differentiator
Problem solved
Functional benefit
Products and services
- Landscape Architecture Services
Quantifiable outcome
- Three LEED Gold-certified projects within UC and CSU systems managed by Principal John Suesens
- +3 more outcomes
Companies that use Quadriga
Customer profileNamed customers13 records
Segments4 records
Ideal customer profiles4 records
Quadriga technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Quadriga partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered project-level, minor and repeat client.
- HPI Architectureproject-levelCollaborated with HPI Architecture on Santa Rosa Junior College Student Housing project, working together to develop student housing that maximizes views to existing campus and creates pleasant outdoor experiences for 350+ student residents.
- BkF Engineersproject-levelEngineering partner on multiple projects including Santa Rosa Junior College Student Housing and Wright Charter School expansion, providing civil engineering services alongside Quadriga's landscape architecture.
- TLCD Architectureproject-levelDesign partner on Wright Charter School expansion and Loma Vista Immersion Academy projects, working collaboratively on campus facilities improvement and outdoor classroom spaces.
- HGA Architectsproject-levelPartnered with HGA Architects on Sutter Santa Rosa Regional Hospital 25-acre healthcare campus and Chico State University Behavioral and Social Science Building projects.
- FDC (Turner Construction Company)project-levelDesign-build team lead for Camp Newman rebuild project, working with Quadriga for landscape architecture services following the 2017 Tubbs fire destruction.
- ArchiLOGIXminorArchitectural partner on Russian River Brewing Facility project in Windsor, CA, collaborating on the fully operational brewery and customer experience destination design.
- MidPen Housingrepeat clientAffordable housing developer client for multiple projects including Fetters Apartments and Peninsula Station, representing a significant portion of Quadriga's housing sector work.
- Audubon Societyproject-levelCollaborated with the Audubon Society on Whitney Ranch Audubon Area in Rocklin, CA, designing a habitat for birds and bats while providing users a peaceful contemplative space.
- Samaha + Hart ArchitectureminorArchitectural partner on Charles M. Schulz Museum Education Building project, designing outdoor spaces to match the lively energy of the museum.
- Federico Díazproject-levelCzech artist collaborated with Quadriga on Subtile public art sculpture situated on a levee in West Sacramento overlooking the Sacramento River.
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
Quadriga competitors and assessment
Company assessmentDirect peers
- Andrea Cochran Landscape Architecture: San Francisco-based boutique landscape architecture firm recognized for award-winning residential, institutional, and public realm projects. Closely comparable in size, design philosophy, and award trajectory to Quadriga.
- Hood Design Studio: Oakland-based landscape architecture and urban design practice with comparable emphasis on cultural context, community engagement, and public realm projects in California. Similar boutique scale and design philosophy.
- RHAA (Robert Hidey Associates): California-based landscape architecture firm specializing in master-planned communities, parks, and urban design with a strong Northern California presence. Comparable in regional focus and project typologies to Quadriga.
- Cheryl Barton / cbstudio: San Francisco-based landscape architecture firm with comparable focus on urban open space, parks, and waterfront/mixed-use development. Closely aligned in California regional practice and project typologies.
- Studio-MLA: Los Angeles-based landscape architecture firm with a comparable multi-disciplinary practice spanning parks, healthcare campuses, urban infill, and environmental design. Directly comparable to Quadriga in scope and California market focus, though larger in scale.
Broad incumbents
- Hargreaves Associates: Established San Francisco and New York-based landscape architecture firm with deep expertise in parks, waterfronts, and campus projects. Overlapping portfolio in healthcare, education, and public realm design with Quadriga.
- LandDesign: Large multi-disciplinary planning, landscape architecture, and urban design firm with a California presence. Competes for institutional, healthcare, and master-planned community work at a much larger scale than Quadriga.
- James Corner Field Operations: High-profile New York-based landscape architecture and urban design firm with a California practice. Overlaps with Quadriga on parks, campuses, and large-scale public realm projects but at significantly greater scale and visibility.
- SWA Group: One of the largest U.S. landscape architecture firms with San Francisco roots and a national footprint. Competes with Quadriga on institutional, park, and urban design projects but at a much broader scale and with significantly larger project capacity.
- OLIN: National landscape architecture and urban design firm with offices in Philadelphia, Los Angeles, and New York. Comparable practice areas including parks, campus master planning, and waterfront design, but at a substantially larger scale.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Quadriga social profiles
Digital presenceQuadriga financial estimates
Financial estimateRevenue estimate
Valuation estimate
Quadriga leadership team
Management profileNumber of profiles
Profiles6 records
Quadriga funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Quadriga 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 Quadriga
What does Quadriga do?
Quadriga is a California-based landscape architecture and planning firm providing full-service design for parks, civic spaces, educational campuses, healthcare facilities, housing developments, and environmental projects. The firm delivers master planning, design development, construction documentation, and construction administration, with specialized expertise in biophilic design, LEED-certified projects, and sustainable stormwater infrastructure. Work is obtained through long-term client relationships with universities, public agencies, school districts, healthcare systems, and private developers across Northern California.
Is Quadriga a public or private company?
Quadriga is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Quadriga founded?
Quadriga was founded in 1997. It employs 1 to 10 people.
Where is Quadriga based?
Quadriga is headquartered in Sacramento, United States, in the North America region.
How does Quadriga make money?
One revenue line is on record: professional Services - Landscape Architecture.
Who are Quadriga's main competitors?
Direct peers on record are Andrea Cochran Landscape Architecture, Hood Design Studio, RHAA (Robert Hidey Associates), Cheryl Barton / cbstudio and Studio-MLA. Broad incumbents are Hargreaves Associates, LandDesign, James Corner Field Operations, SWA Group and OLIN.
Does Quadriga have an API?
No public API is recorded for Quadriga.
What industry is Quadriga in?
Quadriga's product category is Landscape Architecture Services. Its primary akta.pro industry code is BPAHAKAC, Landscape Architecture & Site Design, with a secondary code of HSAIABAJ, Commercial Landscape Design & Installation. Its NAICS code is 541320.