What GTP does

GTP (legal entity Charpentier Services) is a regional French public works contractor founded in 1982 and headquartered in the La Bégaudière industrial zone of Saint-Gilles-Croix-de-Vie, Vendée. The company operates as the western Vendée civil engineering arm of Groupe Charpentier, a diversified construction group that also includes sister companies Atlanroute (asphalt/enrobés) and Betonic (decorative concrete). GTP delivers six integrated service lines — terrassement (earthworks), assainissement EU/EP (wastewater and stormwater drainage), voirie (road infrastructure), demolition, adduction d'eau potable (drinking water supply networks), and plateforme industrielle (industrial platform construction) — primarily within western Vendée and across the Jaunay valley and Breton marsh areas.

The company's offering is centred on conventional construction equipment (loaders, tracked excavators, aerial platforms, trucks) and the multi-disciplinary expertise of its in-house teams, including canalisateurs, conducteurs de travaux, chefs d'équipe, maçons, and drivers. Projects are delivered as integrated packages that combine multiple public works disciplines, enabling clients to work with a single contractor across the full lifecycle from earthworks through finished surfacing. Notable references include the Lycée Saint Gilles Croix de Vie (Région Pays de la Loire, 2019-2021, 20,000 m³ earthworks), the Rue Chenelière redevelopment (Mairie de St Gilles Croix de Vie, 2022), and a multi-month V.R.D. project for the Commune du Fenouiller.

GTP's business model is project-based service contracting, with revenue derived from one-time public works contracts rather than recurring fees. The company holds QSE and RSE certifications and works exclusively with Vendée Eau on drinking water network projects. Customers are a mix of local governments, departmental and regional public bodies, property developers, lotisseurs, surveying firms, private individuals, and occasional enterprise clients (e.g., Super U). Customer acquisition is driven by direct relationships, competitive tendering for public contracts, and word-of-mouth within the local market, supported by a minimal marketing footprint (website, Facebook, LinkedIn, and local press coverage). No public pricing, no self-serve channels, and no digital commerce infrastructure are present.

Name

GTP

Legal name

Charpentier Services

Website

https://girasetp.fr

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

101–250 employees

Short description

GTP is a regional French public works contractor in western Vendée, delivering earthworks, sanitation, road infrastructure, demolition, drinking water networks, and industrial platform construction for municipalities, developers, and Vendée Eau.

Ownership category

akta.pro rank

Product category

Public Works / Civil Engineering Services

NAICS

Water and Sewer Line and Related Structures Construction (23711), Utility System Construction (2371), Other Heavy and Civil Engineering Construction (237990)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), General Bldg Contractors - Nonresidential Bldgs (1540)

akta.pro primary industry

Public Works General Contracting (IMAFAAAG)

akta.pro secondary industries

Construction Management & Delivery (EPCM/CMAR/Design-Build Oversight) (EUANALAE), Commercial General Contracting (New Build) (IMAFAAAA)

Keywords

• Public works services
• Earthworks construction
• Road infrastructure
• Demolition services
• Water supply networks

Headquarters

HQ city

Saint Gilles Croix de Vie

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Infrastructure, Operations, Supply Chain, Marketing or Sales

Revenue model

1. Public Works Services: GTP generates revenue through project-based service contracts in civil engineering and public works, including terrassement, demolition, assainissement, voirie, and adduction d'eau potable. Projects are sourced from municipalities, public administrations, developers, and private individuals. Revenue is derived from one-time project fees rather than recurring contracts.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

GTP is a civil engineering and public works contractor delivering integrated construction services — earthworks (terrassement), wastewater and stormwater drainage (assainissement), road infrastructure (voirie), demolition, drinking water supply networks (adduction d'eau potable), and full industrial platform construction (plateforme industrielle). The company serves municipalities, regional governments, developers, surveying firms, the Vendée departmental water union, and private clients in western Vendée, France. Services are delivered by an in-house multi-discipline workforce using conventional construction equipment, with project-based engagement rather than recurring subscriptions.

Product overview

GTP is a public works services company operating since 1982, offering six integrated service lines: Terrassement (earthworks/excavation), Assainissement EU/EP (wastewater and stormwater drainage networks), Voirie (road infrastructure and urban development), Démolition (building demolition and deconstruction), Adduction d'eau potable (potable water supply networks), and Plateforme industrielle (industrial platform construction). GTP's services are delivered as a unified, coordinated offering — particularly in platform construction where multiple disciplines are combined — covering the full project lifecycle from survey and geotechnical study through construction to final surfacing. The company operates primarily in western Vendée around Saint-Gilles-Croix-de-Vie and Saint-Jean-de-Monts, serving professionals, private individuals, local authorities, surveyors, developers, and the Vendée water syndicate. GTP has no standalone digital product; all offerings are physical construction and infrastructure services.

Differentiator

Problem solved

Functional benefit

Products and services

• Terrassement (Earthworks/Excavation)
• Assainissement EU/EP – Réseaux souples (Wastewater and Stormwater Drainage) Installation of drainage and sewerage networks for evacuating wastewater (EU) and stormwater (EP) in urban environments. Handles pipe diameters from 125 to 1200 mm, serving both collective and individual sanitation systems in western Vendée.
• Voirie (Road Infrastructure and Urban Development) Road construction and urban road layout services including water drainage networks, curb installation, base course preparation (empierrement), surface paving, and asphalt/concrete surfacing for public and private projects in western Vendée.
• Démolition (Building Demolition and Deconstruction) Building demolition and deconstruction services using loaders, tracked excavators, aerial platforms and trucks, with on-site safety preparation, protection of adjacent structures, and sorting of waste materials (wood, glass, rock wool, PVC, plastic).
• Adduction d'eau potable (Drinking Water Supply Networks) Potable water distribution network installation and renewal, including pipe laying using PVC, polyethylene (PE), and cast iron. Executed exclusively in partnership with Vendée Eau across the Jaunay valley and Breton marsh area of western Vendée.
• Plateforme industrielle (Industrial Platform Construction) Full-service industrial platform construction aggregating terrassement, stormwater/sanitary networks, flexible networks, roadworks, and asphalt paving into a single integrated project delivery, leveraging sister companies Atlanroute (asphalt) and Betonic (decorative concrete) within Groupe Charpentier.

Quantifiable outcome

• 22 employees mobilised on a single project (Lycée Saint Gilles Croix de Vie)
• +2 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered core.

• Groupe CharpentiercoreStrategic or Co-development PartnerGTP is a subsidiary of Groupe Charpentier. The group encompasses multiple public works and construction companies operating across the Grand Ouest region of France. GTP serves as the group's civil engineering arm in western Vendée. The group includes sister companies Atlanroute (specialising in asphalt/enrobés) and Betonic (specialising in decorative concrete such as béton désactivé), with whom GTP collaborates on projects requiring these specific materials.
• Vendée EaucoreStrategic or Co-development PartnerGTP works exclusively with Vendée Eau, the public body responsible for water production and distribution in Vendée, to carry out drinking water supply network (AEP) renewal and pipe replacement works across western Vendée. This partnership is central to GTP's adduction d'eau potable service line. Vendée Eau manages water production and distribution infrastructure, and GTP serves as the contracted execution partner for network renewal projects.

Scale indicators6 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Pigeon TP: Regional public works contractor based in western France (Brittany/Pays de la Loire). Comparable in scale and service mix (terrassement, voirie, assainissement) serving similar municipal and developer customers in the Grand Ouest.
• Sotracer: Regional TP contractor active in western France offering earthworks, road construction and utility networks. Comparable in size and service scope to GTP's western Vendée operations.
• Charier: Family-owned regional TP and construction group operating across the Grand Ouest of France. Directly comparable multi-discipline public works offering with similar customer mix of municipalities, developers, and utilities.
• Eveno TP: Western France-based TP contractor with a similar multi-trade public works offering (terrassement, VRD, assainissement). Directly comparable regional TP contractor competing for the same municipal tenders.
• Etablissements Marc SA: Vendée-based public works contractor offering terrassement, voirie, assainissement and réseaux divers. Operates in the same geographic footprint as GTP with comparable project types and public-sector customer base.

Broad incumbents

• Eurovia Atlantique: Regional arm of Eurovia (VINCI group), active in road infrastructure and urban development across western France. Overlaps with GTP on voirie and plateforme industrielle tenders, but operates as a much larger, portfolio-diversified incumbent.
• Colas Centre-Ouest: Regional subsidiary of Colas (Bouygues group), the French road-construction leader. Competes for the same municipal voirie and road infrastructure tenders in western France but with vastly greater scale and resources.
• Bouygues Bâtiment Grand Ouest: Regional construction arm of Bouygues, active in nonresidential building and public infrastructure across western France. A broader incumbent competitor for larger institutional projects such as the Lycée Saint Gilles Croix de Vie.
• Eiffage Route Centre-Ouest: Regional subsidiary of Eiffage Route, a major national road and civil engineering contractor. Competes with GTP on larger public works tenders in the Grand Ouest as part of a broader national portfolio.

Others

• Vendée Eau: Public-sector water utility and GTP's exclusive customer for AEP works. Adjacent rather than competitive — operates the water network GTP builds and renews; understanding its capex cycle is key to forecasting GTP's water-related revenue.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/GTP-108709260670206
• LinkedInlinkedin.com/company/girasetp

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 GTP