What WORKSHOPS 115 architects does

WORKSHOPS 115 architects (legal name Ateliers 115) is a private architectural design firm founded in 1967 by Daniel Montaut and headquartered in Boulogne-Billancourt, Île-de-France, France. The firm employs approximately 20 collaborators operating under a partnership model with four named associates: Jean-Baptiste Montaut, Pauline de Saint Sernin, Anaïs Comeau, and Isabelle Dehe.

The firm provides architectural design services across residential, commercial, hospitality, senior living, student housing, and tertiary building typologies, with documented project values ranging from €3M to €202M (construction cost). Underlying technical infrastructure rests on full BIM (Building Information Modeling) methodology in place since 2010, enabling integration with sustainability certification frameworks including HQE, BREEAM, RE 2020, NF Habitat, Effinergie+, BBCA, and Biodivercity. The firm targets both public and private developers across the Île-de-France region.

Revenue is generated through design fees, typically structured as a percentage of construction cost, secured via architectural competitions and direct commissions. The named client base spans major institutional real estate developers including Vinci Immobilier, Les Nouveaux Constructeurs, Linkcity, Sefri-Cime (for Axa and SAS Antony Place et Villas), HSF (Habitat Social France), Sopic, Valophis/Expansiel, Ginkgo, and Colmabu (Carrefour). Go-to-market is sales-led, relying on competition wins and developer reputation networks; the firm does not appear to operate digital or productized distribution channels.

Name

WORKSHOPS 115 architects

Legal name

Ateliers 115

Website

https://ateliers115.fr

Company type

Private

Founded year

1967

Operating status

Operating

Headcount range

11–50 employees

Short description

WORKSHOPS 115 architects (Ateliers 115) is a Boulogne-Billancourt-based architecture firm founded in 1967 (~20 collaborators) that designs residential, commercial, hospitality, and senior living projects across the Île-de-France region using full BIM methodology and sustainability certifications, serving public and private French real estate developers.

Ownership category

akta.pro rank

Product category

Architectural Design Services

NAICS

Architectural Services (54131), Architectural Services (541310)

SIC

Construction - Special Trade Contractors (1700)

akta.pro primary industry

Residential Design-Build & Renovation-Integrated Builders (IMAFABAE)

akta.pro secondary industry

Architectural Reconfiguration & Structural Alterations (HSAPAEAB)

Keywords

• Architectural design services
• Residential architecture
• Sustainable building design
• BIM architectural services
• Urban planning design

Headquarters

HQ city

Boulogne-billancourt

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architectural Design Services: Architecture firm generating revenue through design fees for architectural projects, typically structured as commissions from public and private developers. Services span from competition participation through to construction supervision.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Ateliers 115 is an architecture firm providing full-scope architectural design services across multiple building typologies including social and private residential housing, student residences, senior living facilities, office buildings (new construction and renovation), mixed-use developments, youth hostels, hotels, and public facilities. Services span the entire project lifecycle from architectural competition entry through concept design to construction supervision, with full BIM workflow implementation and compliance with environmental certifications such as NF Habitat HQE, BREEAM, RE 2020, and Biodivercity labels.

Product overview

Ateliers 115 is an architecture firm founded in 1967 and based in Boulogne-Billancourt, France. The firm offers a comprehensive range of architectural design services across multiple building typologies: residential housing (social and accession), student residences, senior living facilities, office buildings (new construction and renovation), mixed-use developments, youth hostels/hotels, and public equipment. The firm operates a full BIM workflow and holds various building certifications for sustainable construction including NF Habitat HQE, RE 2020, H&E, Effinergie+, BREEAM, BBC, and Biodivercity labels. Their portfolio spans over 20 projects in the Greater Paris metropolitan area, with project values ranging from €3M to €202M.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Housing Design Services Architecture and design of residential buildings including social housing, accession housing, and mixed-use developments with commercial ground floors, delivered for developers such as Sefri-Cime, Vinci Immobilier, and Les Nouveaux Constructeurs.
• Student Residence Design Specialized architectural design for student housing facilities, including dedicated residences with associated amenities.
• Senior Living Residence Design Design of senior living and assisted living residences (résidences services).
• Office Building Design and Renovation New construction and comprehensive renovation of office buildings, serving corporate and institutional clients.
• Youth Hostel and Hotel Design Architectural design of youth hostels and hotel facilities, including associated amenities and dining facilities.
• Public Equipment Design Design of public facilities including aquatic centers, parking structures, and other municipal infrastructure.
• Mixed-Use Development Design Complex multi-program architectural projects combining residential, commercial, and public facilities in single integrated developments.

Quantifiable outcome

• Projects consistently achieve high environmental certifications including NF Habitat HQE (up to 7 stars), BREEAM (up to Excellent), RE 2020 compliance, and Biodivercity labels.

Named customers10 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators3 records

Recent moves10 records

Expansion highlights4 records

Direct peers

• Jean-Paul Viguier et Associés: Paris-based architectural firm with parallel work in residential, office, and mixed-use developments. Comparable scale and portfolio profile in the Greater Paris market.
• Groupe-6: French architectural firm with comparable expertise in housing, healthcare, and public facilities. Direct peer in terms of typology breadth and strong sustainability/RE 2020 credentials.
• Arte Charpentier Architectes: Paris-headquartered architecture firm with parallel expertise in urban housing, offices, and large mixed-use projects. Directly comparable in terms of clientele, scale, and project typologies.
• Architecture-Studio: Paris-based architecture firm with a comparable multidisciplinary practice spanning housing, cultural, and public projects globally. Directly competes with Ateliers 115 for French institutional and developer commissions in the Greater Paris region.
• Reichen & Robert & Associés: Paris architecture practice known for residential, office, and signature mixed-use projects. Comparable in size, BIM methodology, and developer-client relationships.
• Wilmotte & Associés: Established Paris architecture practice with a similarly broad portfolio across residential, office, cultural, and mixed-use projects. Comparable in size, typology breadth, and enterprise client base.
• Valode & Pistre: Major French architecture practice with strong footprint in residential, office, and sustainable development. Direct competitor for large developer commissions and sustainability-led mandates.

Broad incumbents

• AIA Life Designers: Large French architectural group with deep practice in healthcare, residential, and urban projects. Competes with Ateliers 115 for institutional and developer commissions in Île-de-France.
• EGIS Architectes: Large French engineering and architecture group with much broader scale than Ateliers 115. Overlaps in residential, office, and public infrastructure design and competes for major developer commissions.

Emerging players

• Triptyque Architecture: Smaller Paris-based firm with strong sustainability focus and activity in residential and mixed-use projects. Comparable niche positioning though operating at smaller scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/les-ateliers-115-architectes

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 WORKSHOPS 115 architects