Tesora

What Tesora does

TESORA is a French private limited company (Société à responsabilité limitée, or SARL) founded in 2007 as a bureau d'études within another engineering firm and operating independently since 2009. The firm is headquartered in Montrouge (greater Paris) and runs three offices: Montrouge (HQ), Lyon (opened 2012), and Rennes (opened 2024). It specializes in environmental engineering for contaminated sites and soils (SSP - Sites et Sols Pollués), offering a portfolio that covers the full remediation lifecycle: Assistance à Maîtrise d'Ouvrage (project management assistance), pollution diagnostics compliant with the NF X 31-620 standard, maîtrise d'œuvre de dépollution (remediation engineering from design studies through contractor consultation to work acceptance), urban agriculture feasibility consulting, and a proprietary Go/No Go iterative method for daycare facility site assessments developed in partnership with SécurAgri, AgroPariTech, and AgroParisTech Innovation.

Revenue is generated through project-based professional services delivered under framework agreements (accords-cadres) with public institutions and direct contracts with private developers, property owners, industrial companies, and daycare operators. Named customers include Métropole de Lyon, Est Ensemble Habitat (Montreuil), SADEV 94, ATLAND, and various daycare operators served via the ARS framework. The go-to-market is primarily sales-led direct engagement, complemented by event-driven community participation in industry associations (UPDS, Cluster Eaux-Milieux-Sols, Axelera) and research partnerships with ADEME, BRGM, INRA, and CNRS. Sector credentials — LNE SSP certification in domains A and B, ATTES ALUR/SECUR/MEMOIRE/TRAVAUX habilitations valid until June 2030, and the MASE QSE label renewed through October 2028 — collectively function as regulatory gating mechanisms for French SSP work.

Operationally, TESORA employs 11–50 people (exact headcount undisclosed) and runs an SARL with €62,500 share capital. It operates a profit-sharing scheme (intéressement) set at 30% of EBITDA with a 50% company match on employee contributions up to €1,000, and a dispositif d'ouverture du capital indicating employee equity participation. In 2023 the firm adopted a fortnight of 9 days (a 4.5-day work week yielding roughly 22 additional days off per year), and reports a 60% intern-to-CDI conversion rate over the last four years. Robert CARRERAS serves as Président. No external institutional investors or parent company are disclosed, and no funding rounds have been recorded.

Name

Tesora

Legal name

TESORA

Website

https://tesora.fr

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

11–50 employees

Short description

TESORA is a French environmental engineering consultancy specializing in contaminated site and soil remediation. It serves public institutions, private developers, property owners, and daycare operators with diagnostics, remediation engineering, urban agriculture consulting, and daycare site assessment from offices in Montrouge, Lyon, and Rennes.

Ownership category

akta.pro rank

Product category

Environmental Engineering Consulting

NAICS

Remediation Services (562910), Remediation Services (56291), Environmental Consulting Services (541620)

SIC

Hazardous Waste Management (4955)

akta.pro primary industry

Site Assessment & Remedial Investigation (Phase II/III, Sampling & Characterization) (EUAIALAA)

akta.pro secondary industry

Feasibility Studies & Remedial Design/Engineering (FS/RD, Treatability Testing) (EUAIALAB)

Keywords

• Contaminated site remediation
• Environmental engineering consulting
• Soil pollution diagnostics
• Brownfield redevelopment
• Urban agriculture consulting

Headquarters

HQ city

Montrouge

HQ country

France

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Environmental Engineering Consulting Services: TESORA generates revenue through specialized engineering consulting services for polluted sites and soils remediation. Services include assistance to project owners (AMO), pollution diagnostics, remediation project management, urban agriculture consulting, and daycare opening studies. Revenue is generated through project-based engagements, framework agreements with public institutions, and direct contracts with private sector clients.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Tesora (legal name: TESORA) is a French environmental engineering consultancy headquartered in Montrouge, France, specializing in contaminated sites and soils (Sites et Sols Pollués, SSP). The firm delivers pollution diagnostics compliant with the NF X 31-620 standard, project owner assistance (Assistance à Maîtrise d'Ouvrage), full remediation project management (Maîtrise d'œuvre dépollution), urban agriculture feasibility studies integrating bioaccessibility and contaminant transfer modeling, and an iterative Go/No Go method for environmental assessments of daycare and early-childhood facilities.

Product overview

Tesora operates as a specialized engineering firm focused on environmental rehabilitation of polluted sites and soils (SSP - Sites et Sols Pollués). The company offers a portfolio of five interconnected services: Assistance à Maîtrise d'Ouvrage provides project management support for depollution projects; Diagnostic de pollution delivers comprehensive pollution investigation compliant with NF X 31-620 standards; Maîtrise d'œuvre dépollution manages the full remediation engineering lifecycle from design through execution; Agriculture urbaine addresses urban farming contamination concerns; and Étude d'ouverture de crèche provides specialized daycare site environmental assessments using a Go/No Go methodology. These services collectively address the complete lifecycle of contaminated site rehabilitation from initial diagnosis through remediation execution.

Differentiator

Problem solved

Functional benefit

Products and services

• Assistance à Maîtrise d'Ouvrage (AMO) Project owner assistance service that supports public institutions, developers, property owners, and industrial companies in scoping, managing, and overseeing contaminated site and soil (SSP) projects from inception through completion. Designed for clients who require an independent expert to act on their behalf for SSP-related decisions and regulatory compliance.
• Diagnostic de pollution Pollution diagnostics service for sites and soils compliant with the NF X 31-620 standard. Conducted by LNE-certified personnel across SSP domains A and B, the service identifies, characterizes, and quantifies contamination to inform remediation planning. Targeted at site owners, prospective buyers, developers, and public institutions.
• Maîtrise d'œuvre dépollution Full remediation project management service covering design, supervision, and execution oversight of soil and groundwater decontamination works. Provided to public authorities, real estate developers, and industrial clients requiring turnkey delivery of SSP remediation projects.
• Agriculture urbaine Urban agriculture feasibility study service that integrates bioaccessibility modeling and contaminant transfer analysis to assess whether brownfield or potentially contaminated sites can be repurposed for urban food production. Targeted at municipalities, social landlords, and developers involved in urban renewal and circular economy land recycling.
• Étude d'ouverture de crèche (Go/No Go) Iterative Go/No Go environmental assessment methodology designed specifically for early-childhood facilities (daycare, preschool) and sensitive population sites. The method screens, prioritizes, and progressively de-risks soil quality and indoor air exposures before site opening. Targeted at operators, public authorities, and developers of child-occupied buildings.

Quantifiable outcome

• Financial risk optimization for daycare developers through early pollution risk assessment

Named customers5 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

Feature2 records

Partnerships

15 partnerships are on record, tiered core, major and minor.

• UPDScoreStrategic or Co-development PartnerNational professional network for polluted sites and soils. TESORA is a member and participates in sector evolution, regulatory updates, and best practice development.
• Cluster Eaux-Milieux-SolscoreStrategic or Co-development PartnerRegional cluster in Ile de France for water and environmental services. Active participation in network activities and sector development.
• AxeleracoreStrategic or Co-development PartnerRegional cluster in Rhône-Alpes for environmental technologies. Supports TESORA's activities in the Lyon region.
• ADEMEmajorStrategic or Co-development PartnerFrench Environment and Energy Management Agency. Collaboration on environmental research and sustainable development projects.
• Région Auvergne-Rhône-AlpesmajorStrategic or Co-development PartnerRegional government partnership for collaborative projects and regional development initiatives.
• BRGMmajorStrategic or Co-development PartnerBureau de Recherches Géologiques et Minières (French geological survey). Collaboration on geological and environmental research.
• INRAmajorStrategic or Co-development PartnerInstitut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement. Research collaboration on environmental and agricultural topics.
• CNRSmajorStrategic or Co-development PartnerCentre National de la Recherche Scientifique. Collaboration on scientific research projects related to contaminated sites.
• Centre EcotoxminorStrategic or Co-development PartnerSwiss ecotoxicology center. International collaboration for specialized expertise.
• ENGESID BordeauxminorStrategic or Co-development PartnerEngineering school partnership for research and knowledge development.
• UBFC BesançonminorStrategic or Co-development PartnerUniversité Bourgogne Franche-Comté partnership for academic collaboration.
• SécurAgricoreStrategic or Co-development PartnerFramework collaboration with SécurAgri, AgroPariTech and AgroParisTech Innovation for urban agriculture feasibility studies. Enables test crop implementation for food safety assessment and agronomic feasibility analysis.
• LemonTri / LemonAideminorOthersWaste sorting services with social reintegration component. TESORA uses their services for waste management as part of environmental commitment.
• CarbominorStrategic or Co-development PartnerCarbon accounting collaboration for annual carbon footprint calculation and climate commitment.
• Wings of the OceanminorStrategic or Co-development PartnerCarbon compensation beneficiary. TESORA supports Wings of the Ocean as a new patron/mécène, contributing to ocean conservation efforts.

Scale indicators3 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Antea Group: Bureau d'études français spécialisé en environnement, sites et sols pollués, eau et risques. Offre des prestations très similaires à celles de Tesora (diagnostics, MOE dépollution, AMO) à l'échelle nationale et internationale, avec des certifications LNE comparables.
• Burgeap: Filiale du groupe Ginger et leader historique de l'ingénierie SSP en France, Burgeap offre diagnostics de pollution, maîtrise d'œuvre de dépollution et AMO. C'est le concurrent direct le plus comparable à Tesora en termes de portefeuille de services et de certifications LNE.
• HPC Envirotec: Bureau d'études français dédié aux sites et sols pollués, proposant diagnostics, plans de gestion et maîtrise d'œuvre de dépollution. Comparable à Tesora par sa spécialisation SSP, sa taille PME et son positionnement sur les marchés publics et privés.
• IDDEA (ex-ICF Environnement): Société française d'ingénierie environnementale active sur les SSP, l'hygiène industrielle et l'aménagement. Offre une gamme de services similaire à Tesora et intervient sur les mêmes segments de clientèle publique et privée.

Broad incumbents

• SOCOTEC: Acteur majeur du testing, de l'inspection et de la certification en France avec une activité environnement et SSP significative. Comparable à Tesora par les certifications et prestations de diagnostic, mais avec une empreinte bien plus large et internationale.
• Ginger Groupe: Groupe français d'ingénierie environnementale propriétaire de Burgeap, avec un portefeuille large couvrant SSP, géotechnique, eau et aménagement. Comparable à Tesora par son cœur SSP mais sur un spectre beaucoup plus large et avec une empreinte nationale plus dense.
• Apave: Groupe français de contrôle technique et de services environnementaux incluant des prestations SSP et de maîtrise d'œuvre dépollution. Comparable par les domaines SSP mais sur un portefeuille beaucoup plus large (inspection, formation, ESG).
• Arcadis France: Filiale française du groupe international d'ingénierie et de conseil, avec une practice SSP et dépollution. Comparable par les prestations SSP et la méthodologie de maîtrise d'œuvre, mais avec une envergure mondiale.
• WSP France: Filiale française du groupe d'ingénierie WSP, active en environnement, SSP et aménagement durable. Comparable à Tesora sur les missions de diagnostic et de maîtrise d'œuvre dépollution, à plus grande échelle.

Others

• BRGM: Établissement public français de recherche géologique, partenaire de Tesora et acteur de référence sur la connaissance des sols pollués. Comparable non pas en concurrence directe mais comme écosystème de référence et partenaire de recherche commun dans le secteur SSP.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/tesora-france
• Instagraminstagram.com/tesora_france

Compliance7 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 Tesora