CSarchitecture

What CSarchitecture does

CSarchitecture is a France-based architecture practice headquartered in Orléans, operating as an E.U.R.L with €8,000 of share capital. The firm traces its origins to an independent practice founded in 1995 by Stéphane Caussarrieu and was formalized as an agency in 2011. It delivers architecture, interior design, and consulting services across four core verticals: commercial, educational, healthcare, and residential.

The firm's service offering centers on full architectural design supported by BIM/digital modeling capability and a specialization in sustainable construction under French energy performance frameworks (THPE, BBC, E+C-). Notable disclosed mandates include a €50M, 20,000 m² secondary school (Lycée Adrienne Bolland), a dialysis center for ATIRRO, and renovation or fit-out work for John Deere, L'Oréal, Chocolaterie Alex Olivier, and Comptoirs Jeanne d'Arc. Project delivery is executed in partnership with structural engineer ESbat and custom-carpentry firm Griet.

The business model is project-fee based, with revenue tied to architectural commissions as a percentage of construction value. The customer base is split between regional public-sector clients (Région Centre-Val de Loire, Conseil régional, Ville de Vendôme) and private-sector enterprise logos, concentrated in the Centre-Val de Loire region with adjacent operations in Essonne and Sologne. Headcount is reported at 1–10 employees, with no external funding, parent entity, or subsidiaries disclosed.

Name

CSarchitecture

Legal name

C.S. Architecture E.U.R.L

Website

https://csarchitecture.fr

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

1–10 employees

Short description

CSarchitecture is an Orléans-based architecture firm founded in 1995 by Stéphane Caussarrieu, delivering architecture, BIM modeling, and sustainable-design services to public and private clients across commercial, educational, healthcare, and residential sectors in the Centre-Val de Loire region.

Ownership category

akta.pro rank

Headquarters

HQ city

Orléans

HQ country

France

HQ region

Europe

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. Architectural Design Services: Project-based fees for architectural design, interior design, and space planning services for new construction, renovation, and rehabilitation projects.
2. Sustainable Architecture Consulting: Specialized services in high-performance building design including THPE, BBC, B BIO, and E+C standards.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

CSarchitecture provides comprehensive architectural design, interior design, and consulting services for new construction, rehabilitation, and renovation projects across commercial, educational, healthcare, and residential sectors. All projects are designed using digital/BIM modeling from conception through execution, with specialized expertise in high-performance sustainable building standards (THPE, BBC, Bbio, E+C).

Product overview

CS Architecture is a full-service architecture firm offering four interconnected service lines: architectural design services spanning new construction, rehabilitation and renovation across multiple sectors; digital/BIM modeling for project design and execution; sustainable architecture specializing in high-performance energy standards (THPE, BBC, E+C); and interior design for creating coherent, functional spaces. The agency, founded by Stéphane Caussarrieu in 2011, serves clients including public institutions, healthcare facilities, commercial businesses, and residential clients across the Centre-Val de Loire region and beyond.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture Services Full-service architectural design covering new construction, rehabilitation, and renovation projects for various building types including educational, healthcare, commercial, and residential sectors, serving public institutions and private companies.
• Maquette Numérique (Digital/BIM Modeling) Digital modeling services using BIM (Building Information Modeling) methodology, enabling all agency projects to be designed from conception through execution in collaboration with construction companies.
• Architecture Durable (Sustainable Architecture) Sustainable building design specializing in high-performance energy standards including THPE (Très Haute Performance Énergétique), BBC (Bâtiment Basse Consommation), Bbio, and E+C (Énergie Positive & Réduction Carbone), with expertise in wood frame construction and eco-responsible materials.
• Design d'intérieur (Interior Design) Interior design services creating coherent and pleasant living spaces adapted to the specific requirements of various professions and building uses, from conception through to interior layout.

Quantifiable outcome

• Buildings designed to THPE, BBC, B BIO, and E+C sustainable standards

Named customers8 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

Feature1 record

Partnerships

Three partnerships are on record, tiered core.

• Construction CompaniescoreImplementation/ SI/ Consulting PartnerCollaboration with construction companies for project execution using digital modeling (BIM) from conception through execution phase.
• ESbat (Structural Engineering)coreTechnology or IntegrationStructural engineering firm providing calculations and structural modifications for complex projects such as the Victorine Chocolaterie renovation.
• Various Trade ContractorscoreImplementation/ SI/ Consulting PartnerCollaboration with multiple construction trades (masons, painters, etc.) for project execution, particularly for occupied-site renovations.

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• HPP Architects: Mid-sized European architecture firm (German) with similar portfolio mix of public, educational, healthcare and adaptive-reuse projects, useful as a size-comparable European peer.
• Groupe-6: Grenoble-based French architecture firm of comparable size and portfolio breadth (education, healthcare, public), making it a strong operational comparable for a mid-sized French practice.
• AIA Life Designers: French architecture firm specializing in healthcare, education, and social-care facilities — directly mirroring CSarchitecture's vertical mix including the ATIRRO dialysis center and specialized care projects.
• Valode & Pistre: French architecture firm recognized for sustainable and energy-efficient design (BBC/HQE certifications), sharing CSarchitecture's regulatory-driven design philosophy and public-sector engagement.
• Atelier 4+: Smaller French architecture firm with comparable scope (renovation, rehabilitation, energy retrofit) for public and private clients, serving as a scale-equivalent peer.
• Wilmotte & Associés: French architecture firm with explicit expertise in sustainable and high-performance building design across cultural, residential, and commercial sectors — closely aligned with CSarchitecture's THPE/BBC/E+C focus.
• Hamonic+Masson & Associés: French architecture firm with strong education and public-sector portfolio, comparable positioning to CSarchitecture in the French regional tender market.
• Architecture-Studio: Paris-based French architecture firm with comparable multi-sector portfolio (cultural, educational, public) and a strong sustainability ethos, making it a direct comparable for project type though at significantly larger scale.

Broad incumbents

• Foster + Partners: Global architecture incumbent with sustainability leadership; represents the upper bound of scale and brand prestige that CSarchitecture could aspire to via partnership or organic growth.
• BIG (Bjarke Ingels Group): Large international architecture firm known for sustainability-driven design across public and commercial typologies — relevant as a broad incumbent establishing the upper trajectory for the category.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/c.s.-architecture-e.u.r.l

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 CSarchitecture