What Majma does

Majma is a Paris-based architecture and urban design practice founded in 2015 by Martin Jaubert and Antoine Maitre, operating as a SAS d'architecture under the legal name Jaubert et Maitre Architectes. The firm designs and renovates housing, public spaces, and specialised equipment for both public-sector clients (municipalities such as Ville de Paris and Ville de Vernon, and social housing operators including Paris Habitat, 3F, and RIVP) and private-sector clients (developers, individual property owners, and biodynamic wine producers). Project scope ranges from 45 m² apartment renovations to a 28,000 m², 750-unit social-housing rehabilitation, alongside niche urban-winery commissions in France and Belgium.

The practice is differentiated by an ecological methodology centred on adaptive reuse, bio-sourced materials (hemp brick, wood fibre, timber frame), reversibility, and a design philosophy that addresses both intimate (dwelling) and collective (city) scales. It has institutionalised this approach through two FAIRE Paris research laureates (2017 'Hall contributif', 2020 'Part-Time Parisiens') and through the founders' ongoing teaching at ENSArchitecture Versailles and ENSArchitecture Paris-Malaquais. Its core technology is therefore design knowledge, research output, and competition-winning methodology rather than software, platforms, or proprietary IP.

Majma generates revenue exclusively through professional services fees on commissioned projects and public architectural competitions (concours), with no standardised pricing, no productised offering, and no external investment. The firm is privately held by its two co-founders, with a 16-person team, and distributes its services via direct mandates, public tenders, and a portfolio-driven website (majma.eu) supported by Instagram and LinkedIn. The customer base is primarily French, with a single project in Brussels indicating the early stages of cross-border expansion.

Name

Majma

Legal name

Jaubert et Maitre Architectes

Website

https://majma.eu

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

Majma is a 16-person Paris architecture firm founded in 2015 that designs ecological housing, public spaces, and adaptive-reuse projects for French municipalities, social housing operators, and private clients. Its practice is anchored in bio-sourced materials, reversibility, and two FAIRE Paris research laureates.

Ownership category

akta.pro rank

Product category

Architectural Design Services

NAICS

New Multifamily Housing Construction (except For-Sale Builders) (236116)

SIC

Services-To Dwellings & Other Buildings (7340)

akta.pro primary industry

Multi-Family Residential Construction (Apartments, Condos, Townhomes) (IMAFABAB)

Keywords

• Architectural design services
• Social housing renovation
• Urban planning design
• Adaptive reuse architecture
• Applied housing research

Headquarters

HQ city

Paris

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, Infrastructure

Revenue model

1. Architecture and design project fees: Majma generates revenue through fees for architectural design services on commissioned projects (public competitions, direct mandates) and research studies. Projects span social housing, private residential, public space, cultural/hospitality, and wine production facilities. Revenue is project-based and non-recurring in nature.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Majma is a Paris-based architecture agency that designs and renovates housing, public spaces, and specialised equipment (wineries, mixed-use facilities) for public and private clients in France and Belgium. The firm complements its built-work practice with applied research on housing evolution, focused on ecological transformation, adaptive reuse, and innovative occupancy models such as the Part-Time Parisiens time-shared housing concept.

Product overview

Majma is a Paris-based architecture firm founded in 2015 by Martin Jaubert and Antoine Maitre. The firm offers two interconnected service areas: architectural design services for residential housing (ranging from 11 to 750 units), public spaces, and specialized programs (urban wineries, mixed-use developments); and applied housing research addressing contemporary challenges like thermal renovation, collaborative housing models, and urban adaptability. The firm operates primarily in the Île-de-France region with projects in Paris, Champigny-sur-Marne, Houilles, Vernon, and Brussels.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services Design and renovation of housing, public spaces, and specialised equipment (urban wineries, mixed-use facilities) for public and private clients across France and Belgium.
• Applied Housing Research

Quantifiable outcome

• Rehabilitation of 28,000 m² SU of 1930s social housing (750 units) in Paris 20th arrondissement
• +3 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• IDHEAL / Cheuvreux NotairescoreStrategic or Co-development Partner · 1 January 2020Research partners on the Part-Time Parisiens action-research project: IDHEAL (university research institute) provided academic rigour to the time-based housing occupancy study; Cheuvreux Notaires provided legal expertise on housing law and shared occupancy arrangements.
• FAIRE Paris (Pavillon de l'Arsenal / Ville de Paris / Caisse des Dépôts / EDF / MINI)coreStrategic or Co-development Partner · 1 January 2017FAIRE Paris is the first accelerator of innovative architectural and urban projects, led by the Pavillon de l'Arsenal and the City of Paris with partners Caisse des Dépôts, EDF, and MINI. Majma has been recognised as laureate twice (2017 and 2020) for its research-driven housing projects (Hall contributif and Part-Time Parisiens), demonstrating a deep co-development relationship with the program.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Architecture-Studio: Large French architecture firm with broad portfolio spanning social housing, public space, cultural facilities, and urban regeneration across France and internationally. Comparable as a peer competing for the same concours and public housing commissions, but operating at much larger scale with broader specialisation beyond ecological adaptive reuse.

Direct peers

• Encore Heureux: Paris-based architecture and research practice focused on adaptive reuse, circular economy, and innovative housing solutions. Direct peer given overlapping interests in ecological transformation of existing buildings and research-driven housing design recognised by French public bodies.
• ECDM Architectes: Paris-based architecture firm with portfolio spanning social housing, urban renewal, and adaptive reuse. Comparable as a peer competing in the same concours ecosystem for French social housing and urban regeneration commissions, with similar emphasis on sustainable design.
• DVVD Architectes: French architecture firm with established portfolio in social housing, urban regeneration, and public facilities. Comparable peer competing in the same concours ecosystem for French social housing and urban renewal commissions.
• SOA Architectes: French architecture firm with recognised expertise in social housing and ecological/adaptive-reuse design for public operators. Direct peer given overlapping specialisation in bio-sourced materials, housing renovation, and competition with Majma for French social housing tenders.
• Hamonic+Masson & Associés: Paris-based architecture firm with strong portfolio in social housing, urban regeneration, and public space. Direct peer competing for the same public housing operators (Paris Habitat, RIVP) and municipalities on residential and concours-driven briefs.
• Lacaton & Vassal Architectes: French architecture firm renowned for social housing rehabilitation, adaptive reuse, and ecological transformation of existing housing stock. Comparable in specialisation on preserving and upgrading existing social housing (e.g. 750-unit Majma project echoes Lacaton & Vassal's Bordeaux renovations), though operating at much larger scale post-Pritzker.

Emerging players

• Muoto: French architecture practice with research-driven approach to housing, public facilities, and adaptive reuse. Comparable in design philosophy and overlap with public sector clients, though operating at similar small scale with comparable specialisation on sustainable, context-driven architecture.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/majma
• Instagraminstagram.com/majma.eu

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 Majma