XO ARCHITECTURE

What XO ARCHITECTURE does

XO Architecture is a French architecture and interior design firm structured as a SARL (société à responsabilité limitée) with €8,000 in registered capital, headquartered in Valenciennes in the Hauts-de-France region. Founded in 2003 by Dominique Copin, a graduate of École Camondo Paris (1988), the firm is now co-managed by his son Constant Copin (since 2018) and operates with a team of approximately five professionals covering architecture, interior architecture, and business development. The firm generates revenue through professional services fees structured in two ways: a percentage-based model (10–14% of construction cost, excluding tax) for complete maîtrrise d'œuvre missions covering design through delivery, and fixed-fee arrangements for partial services such as feasibility studies, preliminary designs, and permit applications.

The firm serves four primary client segments: individual homeowners (particuliers) for bespoke residential projects, entrepreneurs and SME operators for commercial space design and fit-out, property developers for multi-unit residential and mixed-use developments, and healthcare/institutional clients (hospitals, clinics, laboratories, insurers) for specialized facilities. Its portfolio spans 15+ documented projects including notable references such as the Résidence le Nouvel Art (15,000 m² adaptive reuse of a former military barracks), Mutuelle Just corporate headquarters (4,000 m²), Résidence Zen d'Ô (40 upscale apartments), and the Synlab Oxabio laboratory. Projects span Hauts-de-France (Lille, Valenciennes, Arras) and extend into southern France.

The business operates as a direct-service practice with no intermediaries, no external investors, and no public funding. Client acquisition is driven by a project-based website portfolio, organic social media presence (LinkedIn, Instagram, Facebook), and referrals. The firm holds no patents, trademarks, or disclosed certifications, and uses standard CAD and design tools rather than proprietary technology platforms. Ownership remains with the Copin family, consistent with the founder-led SME architecture practice model typical of the French market.

Name

XO ARCHITECTURE

Legal name

SARL XO ARCHITECTURE

Website

https://xo-architecture.com

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

1–10 employees

Short description

XO Architecture is a family-owned French architecture and interior design firm in Valenciennes serving homeowners, entrepreneurs, developers, and healthcare clients across Hauts-de-France and southern France, with fees structured at 10–14% of construction cost for full project management.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131), Architectural Services (541310), Interior Design Services (541410), Interior Design Services (54141), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

Keywords

• Architectural design services
• Interior architecture services
• Project management construction
• Residential architecture design
• Feasibility study architecture

Headquarters

HQ city

Valenciennes

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Complete maîtrise d'œuvre services: Fees for complete project management services calculated as a percentage (10-14%) of the total construction costs. This covers all phases from initial sketch through project completion and handover.
2. Partial/fixed-fee services: Fixed-fee arrangements for specific architectural services such as feasibility studies, preliminary designs, and permit applications. Fees correspond to project complexity and time required.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

XO Architecture is an architecture and interior architecture firm providing comprehensive design services from conception through construction delivery. The firm's core offerings include feasibility studies, preliminary/conceptual design, permit application filings, and full project management (maîtrise d'œuvre complète) for residential, commercial, healthcare, and institutional projects. It serves individual homeowners, entrepreneurs, property developers, and institutions, primarily in the Hauts-de-France region and Southern France.

Product overview

XO Architecture is a service-based architecture and interior design firm offering a comprehensive portfolio of architectural services rather than a software product. Their core offerings include Architecture Design Services, Interior Architecture Services, and Maîtrise d'Œuvre Complète (full project management from conception to delivery). The firm provides specialized services including Feasibility Studies, Design and Preliminary Projects with 3D visualizations, and Occasional Accompaniment for partial project support. Their project portfolio spans five main categories: Individual Houses, Collective Housing (apartments and residences up to 15,000 m²), Commercial and Retail spaces (restaurants, shops, markets), Healthcare Facilities (laboratories, hospital extensions), and Tertiary/Office buildings. The firm operates from Valenciennes in the Hauts-de-France region, serving clients across Northern France.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture Design Services Complete architecture design services for residential, commercial, collective housing, office, and healthcare projects, from initial concept through construction delivery. Target clients include individual homeowners, entrepreneurs, property developers, and institutional clients.
• Interior Architecture Services Interior architecture and design services for residential and commercial spaces, focused on creating functional and aesthetic environments.
• Maîtrise d'Œuvre Complète (Complete Project Management) Complete project management services from initial sketch through construction completion, including administrative procedures, contractor selection, and construction supervision. Fees are calculated as 10–14% of total construction costs.
• Feasibility Studies Analysis of client needs, budget constraints, and site conditions to provide suitable solutions before design commencement. Priced as a fixed fee based on complexity and time required.
• Design and Preliminary Projects Architectural design work including 3D visualizations and preliminary plans developed in close collaboration with clients, plus permit application preparation (permis de construire).
• Occasional Accompaniment Services Partial project support services including administrative filings and construction site monitoring for clients requiring intermittent architectural guidance rather than full project management.

Quantifiable outcome

• Over 30 years of architectural experience and project delivery
• +1 more outcomes

Named customers8 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

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Wilmotte & Associés: Established French architecture firm working across residential, hospitality, cultural, and commercial sectors. Overlaps with XO in offering full architectural services from concept to delivery for French clients, particularly in residential and tertiary/office segments.
• Architecture-Studio: Large Paris-based architectural firm with a global footprint across cultural, residential, commercial, and urban projects. Comparable as a French architectural services practice covering the same project categories as XO Architecture (housing, offices, public/institutional), but at a vastly larger scale and international reach.
• LAN Architecture: French architecture practice with a strong portfolio in housing, offices, and mixed-use developments. Comparable to XO in covering residential and commercial/office project categories across France, though at a materially larger scale.
• Valode & Pistre: Major French architectural practice with significant work in housing, healthcare, and corporate headquarters. Comparable to XO in competing for similar private and institutional project mandates in France, especially on healthcare and corporate HQs.

Regional players

• AAVO Architects: Belgian architecture practice where Constant Copin worked before joining XO. Comparable because it is a similarly sized contemporary architecture firm active in northern Europe (Belgium/Flanders) with comparable project types; serves as a relevant reference for the contemporary design approach now embedded in XO.

Emerging players

• TVK (architectes urbanistes): Mid-sized French architecture and urbanism practice active in housing and urban regeneration. Comparable to XO in delivering collective housing and residential development projects in France, with overlap on the Hauts-de-France/Greater Paris axis.
• Atelier 9.81: Small French architecture practice delivering residential, educational, and small-scale public projects. Comparable to XO as a similarly sized independent architectural firm working on community-scale and residential projects in France.
• Dominique Coulon & Associés: Independent French architecture studio recognized for cultural and public architecture. Comparable as a similarly structured founder-led architectural firm in France delivering design-led residential and institutional commissions.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat2 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/ConstantCopinarchitecte
• LinkedInlinkedin.com/company/xo-architecture
• Instagraminstagram.com/xo_architecture

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 XO ARCHITECTURE