Dumont Legrand Architectes
Dumont Legrand Architectes is a French architecture firm founded in 2011, operating from Paris and Bordeaux with ~21 staff. It specializes in low-carbon public-sector architecture using bio-sourced materials (hemp concrete, timber, straw, raw earth) for schools, social housing and sports facilities.
- Company typePrivate
- Founded2011
- HeadquartersParis, France
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Dumont Legrand Architectes does
Dumont Legrand Architectes (DLA) is a French architecture and urban design firm founded in 2011 and headquartered in Paris (8 passage Brûlon, 75012) with a second office in Bordeaux (73 rue Peyronnet). The firm was co-founded by architects Grégoire Dumont (DPLG, state council architect for Côte d'Or) and Olivier Legrand (DPLG, ingénieur ESTP) and operates with approximately 21 architects and administrative staff. DLA specializes in low-carbon construction using bio-sourced and geo-sourced materials — hemp concrete (béton de-chanvre), timber framing, straw bale insulation, compressed earth blocks and stone — combined with bioclimatic design (passive ventilation, natural cooling). Its portfolio spans schools, nurseries, social and intermediate housing, sports and aquatic facilities, cultural centers and urban regeneration, with project construction values ranging from roughly €180,000 to €28 million across metropolitan France.
The firm delivers full architectural services — competition submissions, schematic and detailed design, construction administration — on a project-based professional services model, with revenue tied to architecture fees governed by French public procurement rules for public clients. Go-to-market is primarily sales-led: DLA competes in public design competitions (concours) issued by municipalities and metropolitan authorities and accepts direct commissions from social housing operators such as Aquitanis, Immobilière 3F, RIVP and Habitat et Humanisme, plus invitations from developers for larger mixed-use projects where it acts as mandataire or associated architect alongside partner firms. Customers are concentrated in the French public sector (cities of Gennevilliers, Melun, Bègles, Marseille, Saint-Denis, Creil, Meudon, Sceaux, Saint-Médard-en-Jalles) and social housing landlords, with no private commercial clients disclosed.
DLA differentiates through depth of expertise in bio-sourced materials (notably as the architect of the first individual grouped housing operation in hemp concrete in France at Les Loges-en-Josas in 2015), a research practice embedded via a CIFRE doctoral partnership with the Université de Rouen / ENSA Normandie, and active participation in the filière-chanvre sector and academic dissemination (IABR Rotterdam 2024, Cameroon earth symposium 2024, Pavillon de l'Arsenal exhibitions). The firm is a privately held SARL with no external investment, parent company or disclosed subsidiaries, and operates without patents, software products, AI/ML capabilities or digital platforms — its competitive position rests on material know-how, technical talent and reputational capital rather than technology defensibility.
Dumont Legrand Architectes firmographics
Firmographics- Name
- Dumont Legrand Architectes
- Legal name
- Dumont Legrand Architectes
- Website
- https://dumont-legrand.fr
- Company type
- Private
- Founded year
- 2011
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Dumont Legrand Architectes is a French architecture firm founded in 2011, operating from Paris and Bordeaux with ~21 staff. It specializes in low-carbon public-sector architecture using bio-sourced materials (hemp concrete, timber, straw, raw earth) for schools, social housing and sports facilities.
- Ownership category
- akta.pro rank
Dumont Legrand Architectes industry classification
Industry- Product category
- Architecture Services
- NAICS
- Architectural Services (541310), Architectural Services (54131)
- SIC
- General Bldg Contractors - Residential Bldgs (1520)
- akta.pro primary industry
- Architectural Design Services (BPAHAKAA)
Keywords
Where Dumont Legrand Architectes is headquartered
LocationHeadquarters
- HQ city
- Paris
- HQ country
- France
- HQ region
- Europe
Offices3 records
Markets served
Dumont Legrand Architectes business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Architectural Design Services: Fees for architectural design services on public and private construction projects, including competition submissions, schematic design, design development, and construction administration. Revenue is project-based, one-time per engagement.
Go-to-market motion2 records
Distribution channels3 records
Marketing channels7 records
Dumont Legrand Architectes product offering
Product offeringCore offering
Dumont Legrand Architectes provides architectural design services for sustainable, low-carbon buildings using bio-sourced and geo-sourced materials such as hemp concrete, timber, straw, and raw earth. The firm primarily serves French municipalities, public institutions, and social housing developers across schools, housing, sports, leisure, and urban regeneration projects, supported by in-house R&D on bio-sourced construction systems.
Product overview
Dumont Legrand Architectes is a French architecture and urban design firm operating from Paris and Bordeaux offices. The firm specializes in sustainable architecture using eco-friendly and biosourced materials (wood, hemp concrete, straw, raw earth, stone). Their portfolio encompasses educational facilities (schools, nurseries), residential housing (collective and individual), and sports/leisure facilities. The firm is structured as a multi-disciplinary practice rather than a product-based company.
Differentiator
Problem solved
Functional benefit
Products and services
- Architectural Design Services End-to-end architectural design services for sustainable, low-carbon buildings using bio-sourced and geo-sourced materials, delivered to French public and private sector clients.
- Public Building Design (Schools, Sports, Leisure, Civic) Architectural design of public buildings including schools, sports facilities, leisure centers, and civic infrastructure for French municipalities and public institutions.
- Social Housing Design Architectural design of social and affordable housing using low-carbon, bio-sourced construction systems for social housing developers and operators.
- Urban Regeneration Design Architectural and urban design for regeneration of existing neighborhoods and built environments, applying bio-sourced and low-carbon principles.
- Bio-Sourced Construction R&D In-house research and development on bio-sourced materials such as hemp concrete, timber, straw, and raw earth, including performance testing and constructive-system innovation.
Quantifiable outcome
- Prix National de Construction Bois 2025 awarded for Biganos project (96 housing units, 4,600 m²) in the 'Habiter Ensemble' category
- +2 more outcomes
Companies that use Dumont Legrand Architectes
Customer profileNamed customers12 records
Segments3 records
Ideal customer profiles2 records
Dumont Legrand Architectes technology and API
TechnologyAPI detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Dumont Legrand Architectes partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered core and minor.
- Université de Rouen / ENSA NormandiecoreCIFRE doctoral research partnership with the agency hosting its first doctoral researcher (Alexis Desplats) since spring 2023 for a 3-year thesis titled 'Architecture et éducation, vers le chantier pédagogique'. The research bridges practice and academia, focusing on active pedagogies in school buildings.
- Institut Français du Cameroun (IFC)minorCollaboration on a raw earth symposium in Yaoundé, Cameroon (May 2024), including presentations by DLA partners and hands-on training workshops for 50+ students. Partnered with Université des Montagnes de Douala.
- CAUE 77, CAUE 91, CEREMA, TRADICALminorPartners in the experimental hemp concrete testing project at Brunoy (91), with a film produced by CAUE 77 documenting the experiment to measure hygrometric performance of hemp-based insulation.
- MUZ ArchitecturecoreAssociated architect on the Gennevilliers school group project (ZAC des Chanteraines), where DLA leads as mandataire. MUZ contributes architectural expertise to this €21.5M educational project.
- B2A (architecture firm)coreCollaboration with B2A as associated architect on the 91-unit housing project in stone and hemp concrete at rue de la Py, Paris (€18.3M).
- LM IngénieurcoreLong-standing structural and thermal engineering partner appearing across numerous projects (Les Loges-en-Josas, rue de la Huchette, Viroflay, Serris).
- Atelier Jours (paysagiste)coreFrequent landscape architecture partner across multiple housing and school projects including Ville-du-Bois school, Viroflay housing, Serris housing, Gennevilliers school, and Melun school.
- EcozimutcoreFluids, thermal, and environmental engineering partner on sustainable construction projects (Biganos housing, Bruges school, Vayres housing), particularly for projects targeting E3C1/E3C2 certification.
- Quadriplus GroupecoreMulti-disciplinary engineering partner (structure, fluides, TCE) on several school projects including Grigny school (€10M) and Lille aquatic center.
Scale indicators4 records
Recent moves7 records
Expansion highlights6 records
Dumont Legrand Architectes competitors and assessment
Company assessmentBroad incumbents
- Architecture-Studio: Major French architecture firm with global footprint offering broad portfolio across cultural, educational, and urban projects. Comparable as a larger incumbent competing for the same French public competitions while offering much wider typology coverage.
- Dominique Perrault Architecture: Paris-based international architecture firm known for cultural, public, and urban projects. Comparable as an established French architect competing for premium public and institutional commissions, though at much larger scale.
- Wilmotte & Associés: Large established French architecture practice with broad portfolio in cultural, residential, and public projects. Comparable as an incumbent peer competing for major French public commissions at a much larger scale.
Regional players
- ANMA Architectes: French architecture firm with broad portfolio in public facilities, housing, and urban regeneration. Comparable as a French architect competing for similar concours but with different geographic and material specialization.
Direct peers
- Atelier Roland Schweitzer: French architecture firm specializing in bio-sourced and eco-responsible construction with similar focus on hemp, earth, and natural materials. Directly comparable as a specialist peer in the French sustainable architecture niche serving public and social housing clients.
- Philippe Madec Architectes: French architecture practice led by Philippe Madec, recognized for sustainable urban and architectural design with bio-sourced materials. Directly comparable as a leading voice in French eco-architecture serving public sector clients.
- Atelier Georges: French architecture firm working on residential and public projects with bio-sourced material focus. Comparable as a peer operating in the same French sustainable architecture segment with similar size and project profile.
- TETRARC Architectes: French architecture firm based in Nantes with comparable focus on sustainable construction, social housing, and public facilities. Directly comparable in scale (~20-30 staff), typology mix (housing, schools, public buildings), and French regional coverage.
- MUZ Architecture: French architecture firm partnering with Dumont Legrand on the Gennevilliers school group project. Comparable as a peer/partner operating in French public sector educational and residential projects of similar scale.
- B2A Architecture: French architecture firm collaborating with Dumont Legrand on the 91-unit stone and hemp concrete housing project in Paris. Comparable as a peer collaborator working on French social housing and public projects using sustainable materials.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Dumont Legrand Architectes social profiles
Digital presenceDumont Legrand Architectes financial estimates
Financial estimateRevenue estimate
Valuation estimate
Dumont Legrand Architectes leadership team
Management profileNumber of profiles
Profiles2 records
Dumont Legrand Architectes funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Dumont Legrand Architectes 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 Dumont Legrand Architectes
What does Dumont Legrand Architectes do?
Dumont Legrand Architectes provides architectural design services for sustainable, low-carbon buildings using bio-sourced and geo-sourced materials such as hemp concrete, timber, straw, and raw earth. The firm primarily serves French municipalities, public institutions, and social housing developers across schools, housing, sports, leisure, and urban regeneration projects, supported by in-house R&D on bio-sourced construction systems.
Is Dumont Legrand Architectes a public or private company?
Dumont Legrand Architectes is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Dumont Legrand Architectes founded?
Dumont Legrand Architectes was founded in 2011. It employs 11 to 50 people.
Where is Dumont Legrand Architectes based?
Dumont Legrand Architectes is headquartered in Paris, France, in the Europe region.
How does Dumont Legrand Architectes make money?
One revenue line is on record: architectural Design Services.
Who are Dumont Legrand Architectes's main competitors?
Broad incumbents on record are Architecture-Studio, Dominique Perrault Architecture and Wilmotte & Associés. ANMA Architectes is listed as a regional player. Direct peers are Atelier Roland Schweitzer, Philippe Madec Architectes, Atelier Georges, TETRARC Architectes, MUZ Architecture and B2A Architecture.
Does Dumont Legrand Architectes have an API?
No public API is recorded for Dumont Legrand Architectes.
What industry is Dumont Legrand Architectes in?
Dumont Legrand Architectes's product category is Architecture Services. Its primary akta.pro industry code is BPAHAKAA, Architectural Design Services. Its NAICS code is 541310 and its SIC code is 1520.