What Quadrilatere does

Quadrilatère is a Paris-headquartered Design & Build firm founded in 1989 that delivers end-to-end office space transformation for large enterprises, coworking operators, and real estate asset owners across France. Its service offering is organized around four pillars — Conseil (strategic workplace consulting and change management), Conception (interior design and space planning produced by an in-house team of approximately 10 architects and interior designers), Travaux (construction management and contractor coordination), and Mobilier (furniture procurement, installation, and since December 2024, a furniture leasing product). Technical execution relies on BIM REVIT for technical and architectural drawings, supplemented by an internal eco-responsible materials library and a CSR-oriented furniture catalog aligned with Décret Tertiaire sustainability obligations.

The firm generates revenue through project-based professional services engagements with no publicly disclosed pricing; typical projects range from 1,000 m² headquarters fit-outs to 15,000+ m² building repositionings. Quadrilatère is privately held as a SAS with €100,000 registered capital, majority-backed by Esprit de France Hôtels & Demeures (a subsidiary of Compagnie Lebon, in operation since 1835), which provides both strategic capital and a captive hospitality pipeline. Christophe Gellé, former president of Réponse and C&W Design+Build, was appointed President in May 2025 to lead the company's expansion into the hotel and tourism sector, supported by a €7.5 million funding round raised in July 2025.

The customer base is concentrated in France and spans prestige enterprise and institutional logos including Michelin, WeWork, Primonial REIM, GRTgaz, Eurazeo, Autodesk, L'OCCITANE, Sullivan & Cromwell, Future4care, Apside, Crédit Immobilier de France, NCT, Apave, and Contentsquare, among others. Distribution is exclusively direct enterprise sales, with brand visibility reinforced by coverage in Business Immo, Workplace Magazine, and Décideurs Magazine, plus annual participation in the SIMI real estate conference. Quadrilatère holds an EcoVadis Gold Medal (74/100, top 5% in 2024), the Osmoz Aménagement workplace label, and is a signatory of the UN Global Compact and Charte de la Diversité.

Name

Quadrilatere

Legal name

Quadrilatère

Website

https://quadrilatere.com

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

51–100 employees

Short description

Quadrilatère is a Paris-based Design & Build firm founded in 1989 that delivers end-to-end office space transformation, including consulting, design, construction, and furniture services, for large French enterprises, coworking operators, and real estate asset owners.

Ownership category

akta.pro rank

Product category

Commercial Interior Design and Build Services

NAICS

Interior Design Services (54141), Architectural Services (541310)

SIC

Operative Builders (1531), Services-Management Consulting Services (8742)

akta.pro primary industry

Landscape Architecture & Site Design (BPAHAKAC)

akta.pro secondary industry

Office Furniture Moving, Installation & Reconfiguration (Systems Furniture) (HSAKAKAE)

Keywords

• Office design services
• Workplace consulting
• Design and build
• Furniture procurement
• Space planning

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Professional Services (Design & Build): Quadrilatère generates revenue through comprehensive design and build projects for office spaces, including consulting, design conception, construction works, and furniture distribution. Services include strategic workplace planning, technical and functional auditing, project management, change management, space planning, architectural development, contractor selection, worksite coordination, and furniture procurement and installation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels8 records

Core offering

Quadrilatère provides end-to-end Design & Build services for commercial office environments, organized around four integrated pillars: Conseil (strategic workplace consulting, change management, technical and functional auditing, project management, and AMO), Conception (interior design, space planning, and architectural development), Travaux (contractor selection, worksite coordination, and delivery), and Mobilier (furniture consulting, procurement, installation, and since December 2024 furniture leasing). The firm serves large enterprises, coworking operators, and real estate asset owners primarily in the Île-de-France region, with an in-house design team of approximately ten architects and interior designers.

Product overview

Quadrilatère is a space design and layout company offering a comprehensive 'global' service across four pillars: Conseil (advisory consulting), Conception (design), Travaux (construction), and Mobilier (furniture). The company provides end-to-end project management from initial advice and design through construction and furniture procurement/installation. They have developed an internal Design division with approximately ten architects and interior designers. In December 2024, they launched a new furniture leasing service ('Leasing Mobilier') enabling clients to access furniture 'as a service'. Their approach emphasizes listening to client needs, respecting corporate values, and delivering sustainable, quality-focused workspace solutions.

Differentiator

Problem solved

Functional benefit

Products and services

• Conseil (Strategic Advisory Consulting) Strategic and real estate consulting for enterprise clients covering workplace strategy, working methods, programming, technical and functional auditing, project management, change management, internal communications, and Assistance à Maîtrise d'Ouvrage (AMO). Designed for large corporations, coworking operators, and real estate owners initiating workspace transformation projects.
• Conception (Interior Design and Space Planning) Interior design and architectural development for office environments, including design books, capacity studies, space planning, functional and technical programming, layout charters, ESQ/APS/APD design development, execution studies, and architectural refinement. Delivered by an in-house team of architects and interior designers for enterprise, coworking, and real estate clients.
• Travaux (Construction and Works Management) Construction management and project execution services including contractor selection, worksite coordination and pilot, defect tracking and resolution, transfer and relocation management, commissioning, and after-sales service. Targeted at enterprise clients, coworking operators, and building owners executing fit-out or renovation projects.
• Mobilier (Furniture Consulting and Distribution) Furniture consulting, sourcing, and installation for office projects, including product recommendations, support for arbitrages and finishes, order placement, logistics and assembly management, and after-sales service. Offered to enterprise clients alongside design and construction services.
• Leasing Mobilier (Furniture Leasing) Furniture-as-a-service leasing offering that allows enterprise clients to access office furniture without upfront capital expenditure. Launched in December 2024 as an add-on to Quadrilatère's core Mobilier pillar, addressing growing demand for flexible workspace solutions.

Quantifiable outcome

• 51% carbon reduction achieved at Usinerie building, ahead of Décret Tertiaire 2030 targets
• +2 more outcomes

Named customers22 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Christophe GellécoreOthers · 1 May 2025Christophe Gellé, former president of Réponse and C&W Design+Build, took leadership of Quadrilatère in May 2025 to support the Group's development and extend activities to hospitality and tourism sectors.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Gensler: Global architecture, design, and planning firm with a significant workplace practice serving Fortune 500 corporate clients. Comparable to Quadrilatère as an enterprise office design specialist, though operating at much larger scale and geographic breadth.
• JLL Project & Development Services: Global commercial real estate services giant offering project management and design-build adjacent services globally and in France. Comparable as a much larger player whose practice overlaps with Quadrilatère's Conception and Travaux pillars and adjacent to Tétris (its owned design-build brand).
• AREP: French multidisciplinary engineering, architecture, and urban planning firm with significant workplace and office design capability. Comparable to Quadrilatère as a French architectural services firm operating at a larger scale across building types; competes for some of the same design-led office mandates.

Others

• Haworth: Global office furniture manufacturer with adjacent workspace consulting services. Comparable through the furniture supply / procurement pillar of Quadrilatère's business, where they could be vendor or competitor depending on engagement scope.
• Steelcase: Global office furniture manufacturer with growing workplace strategy and design services. Comparable to Quadrilatère on the workplace design / furniture advisory axis, particularly relevant given Quadrilatère's Leasing Mobilier and CSR furniture catalog initiatives.

Direct peers

• Cushman & Wakefield Design + Build: Global CRE services giant's dedicated Design + Build practice, headquartered in London but with strong French operations. Direct peer in commercial office fit-out project management; Christophe Gellé was formerly its president, indicating identical capability set and competitive overlap with Quadrilatère.
• Tétris: European commercial interior design & build specialist, now part of JLL, with deep operations in France. Directly competes with Quadrilatère on enterprise office fit-out mandates, leveraging JLL's occupier services pipeline.
• CBRE (Occupier Services / Fit-Out): Global real estate services firm with a dedicated Occupier Services / project management arm executing commercial interior fit-outs in Paris and across France. Direct competitor for the same enterprise client base Quadrilatère targets (e.g., Michelin, WeWork-class accounts).
• Réponse: French architecture and Design & Build firm specializing in commercial interior fit-out, headquartered in Paris. Directly comparable because it serves the same enterprise office-fit-out market in France, and notably was the prior employer of Quadrilatère's current President Christophe Gellé.

Regional players

• Wilmotte & Associés: Paris-based architecture firm with strong reputation in commercial, cultural, and high-end office projects. Comparable to Quadrilatère as a French architecture practice pursuing premium commercial interior work, often competing for the same sophisticated corporate clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCGHngjYk4pwd8KDiNcHaueg/featured
• Facebookfacebook.com/QuadrilatereParis
• LinkedInlinkedin.com/company/quadrilatere
• Instagraminstagram.com/quadrilatere
• Xx.com/Quadrilatere_02

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Quadrilatere