GEOLIA

What GEOLIA does

GEOLIA is a privately held French engineering consultancy founded in 2006 and headquartered in Morangis (Île-de-France), specializing in geotechnical studies, environmental assessment of polluted sites and soils, and hydrogeology. The company delivers the full French normative mission stack — G1 through G5 geotechnical missions for construction permits and foundations, A100–A260 environmental diagnostics and management plans, and Water Law / PPRI hydrogeological studies — together with specialized services for historical monuments and an in-house drilling operation of 11 teams supported by an integrated soil laboratory and an 800 m² sample storage facility. Underlying technical assets include a proprietary subsurface database of more than 9,000 drilling projects across the Paris basin and dual OPQIBI and LNE certifications (Domain A since 2018, Domain B since 2023), plus authorization to issue ATTES regulatory certificates under the February 2022 ministerial decree.

The company serves 2,000+ clients and executes approximately 850 sites per year, spanning construction developers, architects and engineering firms, local authorities, industrial site owners, property owners, and historical-monument restoration contractors, primarily in the Greater Paris region with select work in French DOM-TOM. Revenue was €11.5 million in FY2023 and is described by the company as having grown constantly since inception. GEOLIA operates a direct B2B sales model with a five-step engagement process (consultation, quote, on-site drilling, analysis, final report), generates revenue through customized professional-services contracts on a project basis, and reports no paid marketing or external institutional ownership. Leadership is founder-controlled through four Director Generals — Claude MARCIE (President, founder and Court of Appeal expert), Thierry MAZET (Historical Monuments), William BATS and Frédéric ANTOINE (geotechnical engineering) — supported by co-founder Christine LOUREIRO in finance, with 20 geotechnical engineers, a 7-person environment team, and dedicated drilling and support staff.

Name

GEOLIA

Legal name

Geolia

Website

https://geolia-conseil.com

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

51–100 employees

Ownership category

akta.pro rank

Product category

Geotechnical Engineering Services

NAICS

Geophysical Surveying and Mapping Services (541360)

akta.pro primary industry

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

akta.pro secondary industries

Geotechnical Investigation & Site Characterization (Boreholes, In-situ Testing, Lab Testing) (IMAFAOAG), Geotechnical Site Investigation & Engineering Geology (Borings, Lab Testing) (EUAHAFAE), Geotechnical & Subsurface Engineering Consulting (BPAHAIAB)

Keywords

• Geotechnical engineering services
• Soil and foundation studies
• Polluted site assessment
• Hydrogeological studies
• Drilling and sampling services

Headquarters

HQ city

Morangis

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Geotechnical Studies: Soil and foundation studies for construction projects using G1-G5 mission frameworks
2. Environmental Services: Polluted site assessment, remediation monitoring, ATTES certifications for change of use
3. Hydrogeology Services: Water table evaluation, dewatering flow management, stormwater management, Water Law impact studies
4. Drilling Services: On-site drilling operations with 11 dedicated teams for destructive, pressuremeter, coring and piezometric drilling
5. Historical Monuments Services: Geotechnical studies and monitoring for historical monument restoration projects

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

GEOLIA is a French geotechnical engineering consultancy that provides integrated soil and foundation studies (G1-G5 missions), environmental assessment and remediation of polluted sites and soils, hydrogeological studies for Water Law compliance, drilling and sampling services, and specialized engineering for historical monument rehabilitation. Services span on-site drilling, in-laboratory soil analysis, regulatory ATTES certifications, and delivery of final study reports for developers, industrial firms, architects, and local authorities in the Greater Paris region.

Product overview

GEOLIA is a specialized engineering consultancy offering a unified portfolio of geotechnical, environmental, and hydrogeological services for construction and development projects in the Paris region. The core offering comprises five interconnected service lines: Géotechnique et Etudes de Fondation (geotechnical studies covering G1-G5 missions), Environnement - Sites et Sols Pollués (environmental assessment and remediation), Hydrogéologie (hydrogeological studies and water law compliance), Monuments Historiques (historical monument rehabilitation), and Sondage (drilling and sampling services). These services are supported by an integrated laboratory and a proprietary subsurface database. The company operates with 34 engineers across four poles, supported by 11 drilling teams, serving 2,000 clients including promoters, developers, local authorities, architects, and engineering firms.

Differentiator

Problem solved

Functional benefit

Products and services

• Géotechnique et Études de Fondation Geotechnical engineering services including soil studies, foundation analysis, and construction site risk assessment across G1 (preliminary), G2 AVP/Pro (design), G3 (execution study and follow-up), G4 (execution supervision), and G5 (diagnosis) mission types. Target users: construction developers, real estate promoters, architects, and engineering firms preparing construction projects in the Paris basin.
• Environnement - Sites et Sols Pollués (SSP) Environmental assessment and remediation services for polluted sites and soils, including historical studies (A100-A120), environmental diagnostics (A200-A260), management plans, IEM studies, and regulatory ATTES certifications (ALUR, SECUR, MEMOIRE, TRAVAUX). Target users: industrial firms, brownfield redevelopers, property owners, and municipalities needing regulatory compliance for site transactions or change of use.
• Hydrogéologie Hydrogeological studies helping clients meet Water Law obligations, including highest water level evaluation (NPHE), pumping flow analysis, stormwater management, hydraulic impact studies, Water Law dossiers (DLE), and PPRI conformity notices. Target users: developers and local authorities required to comply with French water regulations.
• Réhabilitation et Monuments Historiques Specialized geotechnical and engineering services for the restoration, rehabilitation, and maintenance of historical monuments and exceptional sites across France, leveraging 20 years of project experience. Target users: monument owners, heritage authorities, and restoration contractors.
• Sondage (Drilling Services) Professional drilling and sampling services delivered by 10-11 teams of experienced drillers assisted by qualified technicians, performing destructive, pressuremeter, coring, and piezometric drilling under safety and quality conditions. Target users: internal project teams and external clients needing subsoil sampling across the Paris region.
• Laboratoire Intégré (Integrated Laboratory) In-house laboratory for soil analysis that allows most soil analyses to be conducted within GEOLIA facilities, complementing drilling and sampling operations. Target users: GEOLIA's own project teams and clients needing rapid, internally controlled soil analysis results.

Quantifiable outcome

• 850 sites studied per year
• +2 more outcomes

Named customers5 records

Segments5 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

Scale indicators6 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Apave: French technical risk-management company offering inspection, building, and infrastructure consulting including environmental and construction-related assessments. Comparable as a broad French incumbent that competes for technical studies and certifications in the same developer, industrial, and local-authority customer base.
• Setec (Société d'Études Techniques et d'Entreprises de Construction): Major French independent engineering consultancy with infrastructure and environment practices. Comparable as a French engineering consulting peer competing for the same developer, architect, and public-authority clients on technical studies for construction projects.
• Soletanche Bachy (VINCI Construction): Global leader in geotechnical and foundations contracting, part of VINCI. Comparable as a broad incumbent delivering ground engineering and foundation works overlapping with GEOLIA's G2-G5 missions, but at much larger scale and with construction-execution focus rather than just studies.
• Keller Group plc: UK-listed global geotechnical contractor specializing in ground improvement and foundations. Comparable as a broad incumbent overlapping with GEOLIA's geotechnical engineering scope, though primarily a contractor rather than a study-and-investigation consultancy.
• Fugro N.V. Dutch-based global geotechnical, geophysical, and site investigation services company. Comparable as a broad incumbent in subsurface characterization and geotechnical consulting, serving infrastructure and environmental markets with much larger international footprint than GEOLIA.
• Bureau Veritas (Environmental & Infrastructure): Global testing, inspection, and certification firm with significant environmental and infrastructure assessment lines in France. Comparable because it certifies and assesses sites, including brownfield/polluted-site work that overlaps with GEOLIA's LNE-certified environment services.

Direct peers

• Hydrogéotechnique France: French geotechnical engineering firm offering soil studies, drilling, environmental, and hydrogeology services nationwide. Comparable because it directly competes in the same G1-G5 geotechnical mission framework with integrated drilling and laboratory capabilities, just at a broader national geographic scale than GEOLIA.
• Ménard (VINCI Construction): Specialist ground-improvement and geotechnical contractor within VINCI. Comparable as a direct peer in geotechnical engineering execution, overlapping with GEOLIA's G3-G5 supervision missions, though focused on ground improvement execution rather than study-only mandates.
• Antea Group: International engineering and environmental consulting firm with a strong French footprint in water, environment, soil, and site remediation. Comparable because it directly competes in environmental site diagnostics, hydrogeology, and contaminated-land studies - the same regulated service lines where GEOLIA holds LNE and ATTES certifications.

Emerging players

• Burgeap (subsidiary of groupe Ginger): French environmental and water engineering consultancy specialized in soil, water, and pollution studies. Comparable as an emerging specialist competitor with direct overlap in hydrogeology, water-law compliance (Water Law dossiers), and polluted-site diagnostics, the same regulatory niches GEOLIA serves.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/g-olia

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 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 GEOLIA