Atelier d'Architecture Casa

What Atelier d'Architecture Casa does

Atelier d'Architecture Casa is a French DPLG-certified architecture firm founded in 1987 in Clermont-Ferrand by Jacques Castanié. Operating under the maîtrise d'œuvre model, the firm acts as primary contractor on construction projects, serving as the liaison between project owners (maîtres d'ouvrage) and construction companies across six sectors: offices, retail, public facilities, industrial buildings, residential, and healthcare. The client base is dominated by regional public-sector and institutional actors, including OPHIS (social housing), Clermont Auvergne Métropole, multiple communes such as Champeix and Bourg-Lastic, healthcare providers (Pôle médical de Perignat, Institut médical de Perignat), and private enterprises such as Optic 2000. Project scale disclosed on the firm's website ranges from approximately €250k (a 154m² bicycle box) to over €2.2M (social-housing blocks of ~1,400–1,800m²), and services are remunerated on a fee-per-project basis tied to construction cost and scope.

The firm's core technology is human design expertise, not software products, and it has progressively built a vertical stack of related services through two wholly-owned subsidiaries: Atelier d'Ingénierie Casa (founded 2018, providing thermal, fluids, and electrical engineering under Jérémy Vedrine and Joni Nogueira Neves) and Atelier d'Exécution Casa (founded 2021, providing construction execution management under Thomas Rousset). This three-entity structure (architecture + engineering + execution) is the firm's primary operational differentiator versus pure-play architects, enabling integrated design-to-delivery without external intermediaries. Distribution is entirely direct; the firm markets via its own website, an active blog targeting regional search terms (e.g., architecte industriel Clermont-Ferrand, architecte médical Clermont-Ferrand), and an Instagram account, with no intermediary channel partners. Leadership has been stable: founder Jacques Castanié transitioned to founding-partner status in June 2020, leaving co-managing partners Stéphane Gay and Jean-Charles Villatte to run the firm.

Name

Atelier d'Architecture Casa

Legal name

Atelier d'Architecture Casa

Website

https://ateliercasa.fr

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

101–250 employees

Short description

French DPLG-certified architecture firm in Clermont-Ferrand providing design, engineering, and execution services across commercial, public, residential, industrial, and healthcare sectors for regional public-sector and private clients in Auvergne.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131), Architectural Services (541310)

akta.pro primary industry

Architectural Reconfiguration & Structural Alterations (HSAPAEAB)

akta.pro secondary industries

Residential Design-Build & Renovation-Integrated Builders (IMAFABAE), Residential Affordable Housing Development & Construction (IMAFABAI), Whole-Home Interior Renovation (Non-Structural) (HSAPAEAC)

Keywords

• Architectural design services
• Construction project management
• Healthcare facility architecture
• Industrial building design
• Residential architecture services

Headquarters

HQ city

Clermont-Ferrand, Auvergne-Rhône-Alpes

HQ country

France

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architecture and Master Contracting Services: As a DPLG-certified architecture firm (Architectes DPLG), the company provides comprehensive architecture services including project design, construction management, and master contracting for various building types. Revenue is generated through professional service fees for construction projects across commercial, industrial, residential, healthcare, and public facilities sectors.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Atelier d'Architecture Casa is a DPLG-certified architecture firm providing comprehensive architectural design and maître d'œuvre (master contracting / construction project management) services across six sectors: offices (Bureaux), retail (Commerces), public facilities (Équipements), industrial (Industriel), residential (Résidentiel), and healthcare (Santé). Services span the full project lifecycle from conception through construction execution, complemented by in-house thermal/fluids/electrical engineering via Atelier d'Ingénierie Casa and execution management via Atelier d'Exécution Casa.

Product overview

Atelier d'Architecture Casa is an architecture firm offering comprehensive architectural services across six main sectors: Bureaux (offices), Commerces (retail/commercial), Équipements (public facilities), Industriel (industrial buildings), Résidentiel (residential), and Santé (healthcare). Founded in 1987, the firm provides full-service architecture from design through execution. The company has expanded into complementary services through two subsidiaries: Atelier d'Ingénierie Casa (thermal, fluids, and electrical engineering, founded 2018) and Atelier d'Exécution Casa (construction execution management, founded 2021), creating an integrated ecosystem for building projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture de Bureaux (Office Architecture) Architectural design and maître d'œuvre services for office buildings, corporate headquarters, and business premises, including new construction and renovation.
• Architecture de Commerces (Retail Architecture) Architecture and project management for retail spaces, boutiques, restaurants, and shopping establishments for clients such as Optic 2000 Junior and Restaurant Guy&Sons.
• Architecture d'Équipements (Public Facilities Architecture) Architecture for public facilities including schools (écoles élémentaires, maternelles, foyers scolaires), fire stations (Centre de secours SDIS), community centers, agricultural buildings (Ferme intercommunale), and collective infrastructure such as mielleries.
• Architecture Industrielle (Industrial Architecture) Architecture for factories, warehouses, logistics platforms, and production facilities, with expertise in ICPE regulations and industrial process optimization. Includes renovation of existing industrial sites such as the Imprimerie SIMAN project.
• Architecture Résidentielle (Residential Architecture) Residential architecture covering social housing (e.g., Résidence Oppida, Logements sociaux Opme), collective housing developments, multi-unit housing, and individual residences, with established partnerships with social housing providers including OPHIS.
• Architecture de Santé (Healthcare Architecture) Architecture for healthcare facilities including medical offices, clinics (Maison de santé, Maison Médicale), medical poles (Pôle médical de Perignat-Les-Sarliève), and imaging centers (radiology, IRM), with expertise in radioprotection and integration of specialized medical equipment.
• Atelier d'Ingénierie Casa (Engineering Office) Thermal, fluids, and electrical engineering studies for building projects, providing integrated engineering services alongside the parent firm's architecture services. Offered as a complementary standalone engineering capability accessible to the firm's architecture clients.
• Atelier d'Exécution Casa (Execution Office) Construction execution management services for complementary project delivery, enabling full project lifecycle coverage from architecture through engineering and execution.

Named customers9 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Two partnerships are on record, tiered core.

• Atelier d'Exécution CasacoreStrategic or Co-development Partner · 1 January 2021Execution subsidiary founded in 2021 to provide project execution management services. Co-managed by Thomas ROUSSET. Complements architecture and engineering services for complete project delivery.
• Atelier d'Ingénierie CasacoreStrategic or Co-development Partner · 1 January 2018Engineering subsidiary founded in 2018 to provide thermal, fluids, and electricity studies in-house. Co-managed by Jérémy VEDRINE and Joni NOGUEIRA NEVES. Provides integrated engineering services alongside architecture services.

Scale indicators2 records

Recent moves7 records

Expansion highlights4 records

Broad incumbents

• Egis: Large French engineering and architecture group operating across buildings, infrastructure, and urban development. Comparable as a French firm providing integrated architecture and engineering services to public-sector clients.
• Architecture-Studio: Major French architecture firm with offices in Paris and internationally, working across cultural, educational, residential, and commercial sectors. Comparable as a French architectural services peer with similar DPLG-equivalent credentials but operating at a much larger national/international scale.
• Arte Charpentier Architectes: Paris-based architecture firm with multi-sector expertise in offices, retail, healthcare, residential, and public facilities. Comparable in sector breadth and French architectural services delivery model.
• Wilmotte & Associés: Paris-based architecture practice covering cultural, residential, commercial, and urban design projects across France and internationally. Comparable as a multi-sector French architecture firm with full design services, though larger and more internationally oriented than Atelier Casa.
• Patriarche Group: Integrated architecture, engineering, and real estate development group based in France, offering design-build and execution services. Highly comparable to Atelier Casa's integrated model (architecture + engineering + execution) but at much larger national scale.
• Artelia: Major French engineering, project management, and architecture group offering multi-disciplinary building services including MEP, structure, and project management. Comparable as a French firm offering integrated architecture and engineering services, though at much larger scale.

Direct peers

• AIA Architectes: French architecture collective with regional offices offering integrated architecture, urban planning, and design services across housing, healthcare, education, and commercial sectors. Highly comparable to Atelier Casa in structure (multi-disciplinary, multi-sector French firm) and target clients (public-sector and social housing).
• ECDM Architectes: French architecture firm with offices in Paris and Nantes, working across housing, education, and urban design. Comparable multi-sector French practice serving public and private clients with similar DPLG-equivalent qualifications.
• Atelier Roland Schweitzer: Paris-based architecture and urban planning practice with strong focus on sustainable and social housing projects. Comparable as a French architecture firm with social-housing and sustainability expertise, similar to Atelier Casa's OPHIS work and eco-logical positioning.
• TANK Architectes: French architecture firm working across housing, healthcare, and public-sector projects with regional offices. Comparable as a multi-sector French practice serving similar public-sector clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Instagraminstagram.com/atelierdarchitecturecasa
• LinkedInlinkedin.com/company/atelier-d-architecture-casa

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries2 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 Atelier d'Architecture Casa