What CESAM does

CESAM (legal entity: CESAM CONSTRUCTION, a French SAS) is an all-trades (tous corps d'état) general contractor specializing in construction and renovation across the tertiary, residential, hospitality, and commercial sectors. Headquartered at 18 rue Ficatier in Courbevoie, within the La Défense business district area of the Paris region, the company delivers projects exclusively in Paris and Île-de-France. CESAM was established within Groupe TREUIL — a diversified construction conglomerate founded in 1983 and now comprising approximately ten specialized subsidiaries covering carpentry (TMB), wood floors (TCB), structural work (ACMO, GOYER), metalwork (PACEMETAL), and engineering — and operates as the group's dedicated general contracting entity.

The company's core offering spans construction and renovation services delivered through five specialized work categories: macro-lots (large multi-trade projects), travaux preneurs (occupied-site renovations performed without disrupting client operations), travaux coup de poing (quick-turnaround fit-outs), chantiers d'envergure (major multi-phase rehabilitations), and agencement haut de gamme (high-end interior fitting including custom millwork and acoustic treatments). Underlying tooling includes 3D modeling for project visualization and architectural/technical lot synthesis. Demonstrated project scale includes the 8,500m² La Poste du Louvre headquarters renovation for BPE (5 months, up to 100 mobilized workers), the 5,700m² RTE national control center renovation in Saint-Denis (12 months, occupied site), the 8,240m² Le Prélude rehabilitation (BREEAM Excellence, 820-person capacity), and macro-lot architectural work on WO2's 120,000m² Arboretum campus in Nanterre. The company is certified ISO 9001 and ISO 14001.

CESAM generates revenue through one-time, project-based contracts as a B2B general contractor, with pricing determined per-project based on scope, size, and complexity. It sells directly to enterprise clients — institutional investors, property developers, insurance companies (AG2R La Mondiale, Allianz), banks (BNP Paribas Real Estate, BPE, Société Générale), real estate operators (SFL, Covivio, Cushman & Wakefield), energy infrastructure (RTE), and public/education clients (AFORP-UIMM Île-de-France, WO2) — without intermediaries or distribution partners. Business development runs primarily through direct enterprise relationships, group referrals within Groupe TREUIL, competitive tendering, and a project-case-study-driven website presence. With 54 employees and a 'human-scale' positioning within its parent group, CESAM operates as a focused Paris-region specialist leveraging cross-subsidiary trade capacity rather than as a standalone scale player.

Name

CESAM

Legal name

CESAM CONSTRUCTION

Website

https://cesam-treuil.fr

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

51–100 employees

Short description

CESAM (CESAM CONSTRUCTION) is a French all-trades general contractor delivering construction, renovation, high-end fit-out, and occupied-site works for tertiary, residential, hospitality, and commercial clients across Paris and Île-de-France, operating as part of Groupe TREUIL.

Ownership category

akta.pro rank

Headquarters

HQ city

Courbevoie

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain

Revenue model

1. Construction and Renovation Services: CESAM generates revenue through one-time project-based contracts as a general contractor for construction and renovation projects. Services range from macro-lot contracts (multiple trades) to full tous corps d'état (all trades) delivery, serving commercial, hospitality, and residential clients in the Paris and Île-de-France region.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

CESAM is a specialist general contractor delivering all-trades (tous corps d'état) construction and renovation services across the tertiary, residential, hospitality, and commercial sectors. The company handles projects end-to-end — from demolition/curage and structural modifications through fit-out and finishing — often executing work in occupied buildings without disrupting ongoing activities. Services cover macro-lot contracts, quick-turnaround fit-outs, major rehabilitation projects, and high-end interior fitting for clients in the Paris and Île-de-France region.

Product overview

CESAM is a construction and renovation company operating under Groupe TREUIL, offering a unified portfolio of all-trade (tous corps d'état) services for tertiary, residential, hospitality, and commercial sectors in Paris and Île-de-France. The core offering spans construction and renovation services, delivered through specialized work categories: Macro-lots for large-scale multi-trade projects, Travaux preneurs for occupied-space renovations without disruption, Travaux coup de poing for quick-turnaround fit-outs, and Chantiers d'envergure for major rehabilitation projects. The company also provides high-end interior fitting (agencement haut de gamme) including custom millwork, acoustic treatments, and reception installations, as well as preliminary studies and 3D modeling for project visualization and planning.

Differentiator

Problem solved

Functional benefit

Products and services

• Construction tous corps d'état (All-Trades Construction)

Quantifiable outcome

• 8,500m² renovated in 5 months with up to 100 workers mobilized (La Poste du Louvre / BPE project)
• +2 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Groupe TREUILcoreStrategic or Co-development PartnerCESAM is a subsidiary of Groupe TREUIL, a construction group founded in 1983. The group comprises approximately 10 companies specializing in carpentry, structural work, fitting-out, and engineering. CESAM benefits from synergies with group subsidiaries including TMB (carpentry), TCB (wood floors), ACMO, GOYER, PACEMETAL, and others for specialized trade work on projects.

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Demathieu Bard Construction: Independently owned French general contractor with similar all-trades building expertise, regional bases, and a focus on complex tertiary, residential and public-sector projects — directly comparable to CESAM's tous corps d'état delivery model.
• NGE Bâtiment: Mid-sized French GC (part of NGE group) with multi-trade building capabilities serving enterprise, public and residential clients across regions. Comparable to CESAM as a mid-tier independent French general contractor pursuing similar tertiary renovation projects.
• Léon Grosse: Mid-sized French general contractor with comparable all-trades construction/renovation capability and a strong tertiary/industrial project portfolio across France. Closely comparable in scope of work (tous corps d'état), client mix (enterprise/industrial), and positioning as a privately held, multi-specialty GC.
• Rabot Dutilleul Construction: Northern-France-headquartered family-owned GC with similar all-trades construction and renovation services, comparable project scale, and a BTP-rooted operating model; directly comparable to CESAM on size, ownership profile and project mix.
• Fayat Bâtiment: Building arm of the privately held Fayat Group, offering general contracting and all-trades construction across France. Closely mirrors CESAM's structure as a building-focused subsidiary inside a diversified privately owned construction/engineering group.

Broad incumbents

• Spie batignolles: Larger diversified French construction group offering general contracting, civil works, energy and real estate. Overlaps with CESAM on all-trades building construction and renovation but operates at materially greater scale and breadth.
• Bouygues Bâtiment Île-de-France: Regional building subsidiary of Bouygues Construction, the largest French GC. Competes directly with CESAM for enterprise office, hospitality and tertiary renovation work in Île-de-France, but with vastly greater resources and broader service lines.
• Eiffage Construction: Building division of Eiffage Group, one of France's largest construction groups, with full all-trades general contracting and renovation capabilities. Directly overlaps with CESAM on tertiary and residential projects but operates nationally and at far larger scale.
• Vinci Construction France: French building subsidiary of global construction major Vinci, operating all-trades construction and renovation across France. Comparable to CESAM on delivery model and client mix but with national reach, multi-trade capacity and financial scale an order of magnitude larger.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks2 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/cesam-construction

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 CESAM