Géosynthèse

What Géosynthèse does

Géosynthèse is a French technical engineering firm (bureau d'études techniques) specializing in post-disaster repair and reconstruction solutions for insurers, insurance experts, and property owners. The company delivers independent technical diagnosis, repair design, contractor tendering and cost negotiation, and full maître d'œuvre project oversight through to completion and handover. It operates across three integrated technical domains — Géotechnique appliquée (slope stabilization, foundation work, soil treatment, groundwater management), Structures et superstructures (reinforced concrete, metal, wood and mixed structures, seismic analysis, waterproofing/cuvelage), and Tout corps d'état (facades, cladding, industrial flooring, pool waterproofing, envelope repairs) — covering the full post-disaster repair lifecycle.

The firm's technical toolkit includes PLAXIS 2D/3D finite element modelling for structural and repair-scenario analysis, ferroscan and ground-penetrating radar for non-destructive condition assessment, 3D laser scanning, and drone-based optical and thermal imaging for site surveys. Engagements are governed by strict French and European construction standards (Eurocode 7, Eurocode 8, DTU 14.1). The workforce is approximately 20 collaborators, of which 16 are specialist engineers, with operations across 5 regional agencies in Île-de-France, Normandie, Sud-Ouest, Rhône-Alpes, and PACA.

Géosynthèse generates revenue exclusively through professional services engagements billed on a quote-based, per-mission basis, with the customer base split between two primary segments: insurance companies and their appointed experts (high-stakes claims requiring independent technical evaluation), and building owners and property managers (maîtres d'ouvrage, gestionnaires de parcs immobiliers) requiring independent engineering assessment and repair management. The firm became a wholly-owned subsidiary of the Stelliant group in 2020, and reported that revenue doubled in 2021 versus the prior year. Distribution is direct only — missions are commissioned by insurers or property owners following a loss event, with no resellers, distributors, or digital self-serve channels.

Name

Géosynthèse

Legal name

GEOSYNTHESE

Website

https://geosynthese.fr

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

11–50 employees

Short description

Géosynthèse is a French specialist engineering firm (bureau d'études techniques) that delivers post-disaster technical diagnostics, repair design, and full maître d'œuvre project oversight for insurers, insurance experts, and property owners across geotechnical, structural, and all-building-trades domains.

Ownership category

akta.pro rank

Product category

Construction Engineering Services (Post-Disaster Repair)

NAICS

Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Geotechnical Design, Engineering & Consulting (Analysis, Design, Peer Review) (IMAFAOAK)

akta.pro secondary industries

Geotechnical & Subsurface Engineering Consulting (BPAHAIAB), Tunneling & Underground Geotechnics (Ground Treatment, Support, NATM/SEM Interfaces) (IMAFAOAJ), Shallow Foundations & Ground Support (Footings, Rafts, Ground Beams) (IMAFAOAB)

Keywords

• Post-disaster engineering
• Structural repair services
• Geotechnical engineering
• Construction claims management
• Building reconstruction services

Headquarters

HQ city

Colombes

HQ country

France

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Technical Engineering and Master Contractor Services: Billed as professional services engagements: Géosynthèse is commissioned by insurers and building owners to perform technical diagnostics, develop repair specifications, manage contractor tendering and cost negotiation, and oversee construction through to completion and handover as maître d'œuvre. Revenue is derived from fees for technical studies and ongoing project management throughout the repair process.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels2 records

Core offering

Géosynthèse is a specialist technical engineering bureau (bureau d'études techniques) and maître d'œuvre focused exclusively on post-disaster repair and reconstruction. It is commissioned by insurers, insurance experts, property owners, and building managers to perform on-site technical diagnostics, design repair specifications, manage contractor tendering and cost negotiation, and oversee construction through to handover and final acceptance. The offering is delivered across three integrated domains: applied geotechnique (slope stabilization, underpinning, soil treatment, groundwater management), structures and superstructures (reinforced concrete, metal, wood, seismic, waterproofing), and tout corps d'état (facades, coatings, flooring, waterproofing).

Product overview

Géosynthèse operates as a single integrated offering of technical engineering and construction project management services, organized around three complementary service domains: (1) Géotechnique appliquée - specialized geotechnical engineering for slope stabilization, soil treatment, and groundwater management; (2) Structures et superstructures - structural repair and reinforcement services for concrete, metal, wood, and mixed structures including seismic considerations and waterproofing; and (3) Tout corps d'état - all construction trades covering facades, roofing, flooring, and envelope waterproofing. These three domains work together to deliver comprehensive post-disaster repair solutions, with the company acting as master contractor (maître d'œuvre) from initial technical diagnosis through construction supervision to final acceptance.

Differentiator

Problem solved

Functional benefit

Products and services

• Géotechnique appliquée (Applied Geotechnique) Engineering geotechnical services including slope stabilization, retaining structure design, foundation sizing, soil treatment, and groundwater management for post-disaster repair and reconstruction. Delivered for insurers, insurance experts, property owners, and building managers as part of the firm's maître d'œuvre mission.
• Structures et superstructures (Structures and Superstructures) Structural and superstructure repair solutions including reinforced concrete studies, seismic analysis, foundation work, waterproofing (cuvelage), and structural consolidation for buildings damaged by disaster. Delivered for insurers, insurance experts, property owners, and building managers with PLAXIS 2D/3D finite element modelling and field-testing tools.
• Tout corps d'état (All Construction Trades) Complete construction trade services covering facade cladding, exterior coatings, industrial resin flooring, pool waterproofing, and roller shutter repairs as part of post-disaster reconstruction projects. Delivered for property owners, insurers, and building managers as one of the three integrated service domains.

Quantifiable outcome

• Revenue doubled in 2021 compared to the previous year
• +1 more outcomes

Named customers3 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

Feature5 records

Partnerships

One partnership is on record.

• Stelliant GroupcoreStrategic or Co-development Partner · 1 January 2020Géosynthèse joined the Stelliant group in 2020. Stelliant SAS, headquartered at TOUR LEGENDE, 20 Place de la Défense, 92800 Puteaux, France (capital €103,287,348, RCS Paris 820 803 484, President Benjamin BOUFFARD), is the parent company providing institutional backing, cross-group synergies, and shared brand positioning in the French insurance and construction expertise market.

Scale indicators3 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• Cabinet ARC: French independent engineering consultancy specialized in construction pathology, expertise, and post-loss technical assessment. Comparable to Géosynthèse in providing insurer-commissioned technical studies and repair recommendations for damaged buildings.
• Burgeap: French environmental and geotechnical engineering consultancy providing site investigation, soil mechanics, and groundwater studies. Comparable to Géosynthèse in the geotechnical investigation and subsurface characterization services space.
• BTP Consultants: French construction technical consulting firm providing expertise, diagnostics, and project management services for insurers, owners, and legal proceedings. Comparable to Géosynthèse's post-disaster technical expertise and maître d'œuvre activities.
• Ginger CEBTP: French geotechnical and civil engineering specialist offering soil studies, foundation engineering, and structural diagnostics. Most directly comparable to Géosynthèse's geotechnical and structural engineering services for construction and infrastructure clients.

Broad incumbents

• Setec: Major French independent engineering group covering infrastructure, buildings, environment, and energy. Comparable as a broad engineering incumbent with overlapping geotechnical, structural, and construction-project-management capabilities.
• Stelliant: Parent company of Géosynthèse; a French diversified insurance and construction expertise group. Included as a peer because Stelliant's broader portfolio of loss-adjustment and construction expertise services overlaps with Géosynthèse's insurer-facing post-disaster engineering mission.
• Bureau Veritas: Global testing, inspection, and certification firm with significant French operations in construction and infrastructure. Comparable as a broad incumbent providing engineering and technical assessment services to insurance and construction clients across multiple verticals.
• SOCOTEC: Major French engineering services and inspection firm (part of SOCOTEC Group) covering construction, infrastructure, and industrial asset integrity. Comparable to Géosynthèse as a broad incumbent offering overlapping engineering services to insurers, builders, and property owners across France.
• Egis Group: Major French engineering and consulting group operating across infrastructure, construction, environment, and energy. Comparable as a broad engineering incumbent with overlapping capabilities in geotechnical, structural, and project-management engineering services.

Emerging players

• Veritas France (Sinistres): French construction expertise and technical consultancy serving the insurance market on post-loss building claims. Comparable as an emerging specialist providing technical studies and repair recommendations in the same post-disaster engineering niche.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/g%C3%A9osynth%C3%A8se

Revenue estimate

Valuation estimate

Number of profiles

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 Géosynthèse