OASIIS
OASIIS is a French environmental engineering consultancy founded in 1989 that delivers thermal simulation, life-cycle assessment, certification, and commissioning services for buildings across healthcare, education, commercial, residential, and public-sector clients in France and internationally.
- Company typePrivate
- Founded1989
- HeadquartersParis, France
- Headcount11–50
- GTM typeB2B
- OfferingServices
What OASIIS does
OASIIS is a French privately held environmental engineering consultancy (SAS, registered capital €285,131.25) founded in 1989 and headquartered in Aubagne near Marseille, with regional agencies in Paris, Strasbourg, and Monaco. The firm specialises in environmental performance consulting for buildings, providing services across three core lines: BET Environnement (technical environmental studies), AMO Qualité Environnementale (environmental project management assistance), and Commissioning. Its work covers dynamic thermal simulation (STD), dynamic energy simulation (SED), life-cycle assessment (ACV), daylight and aeraulic/CFD studies, carbon footprint assessment (Bilan Carbone), and measurement & verification plans (PMV), alongside certification delivery under HQE, BREEAM, LEED, BBCA, BDM, PassivHaus, and E+C- frameworks, with RE2020 compliance as a regulatory anchor.
The company serves a B2B client base of building owners, developers, architects, contractors, and public authorities across healthcare, education, sports & leisure, hospitality, residential, office/commercial, and government/institutional sectors in France and internationally (Monaco, New Caledonia, Benin). Go-to-market is sales-led, relying on deep relationships with 200+ architectural firms, direct enterprise engagement on complex projects, and public-tender participation; revenue is generated through project-based professional services fees.
Notable commercial outcomes include the first Cradle to Cradle certified commercial centre in France (Centre Commercial Vélodrome Marseille, 28,000 m², 2018), the first HQE certified public building in New Caledonia (Médipôle de Koutio, 88,000 m², €322M HT, 2016), and PassivHaus-certified healthcare facilities (Nouvel Hôpital de Lens €143M HT, EHPAD Les Cordeliers). The firm participates in the SYMBIO2 consortium led by XTU, awarded €4.8M FUI 15 funding for bio-facade R&D, signalling a longer-term move into circular-economy and bio-based construction advisory.
OASIIS firmographics
Firmographics- Name
- OASIIS
- Legal name
- OASIIS S.A.S.
- Website
- https://oasiis.fr
- Company type
- Private
- Founded year
- 1989
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- OASIIS is a French environmental engineering consultancy founded in 1989 that delivers thermal simulation, life-cycle assessment, certification, and commissioning services for buildings across healthcare, education, commercial, residential, and public-sector clients in France and internationally.
- Ownership category
- akta.pro rank
OASIIS industry classification
Industry- Product category
- Environmental Engineering Consulting
- NAICS
- Environmental Consulting Services (54162), Architectural, Engineering, and Related Services (5413)
- SIC
- Services-Engineering Services (8711)
- akta.pro primary industry
- EHS Management Systems & ISO Consulting (ISO 14001/45001) (BPAHAJAF)
- akta.pro secondary industries
- Environmental Impact Assessment (EIA) & Due Diligence (BPAHAJAB), Compliance Obligations Management (Permits-to-Controls Mapping) (EUAHAIAK)
Keywords
Where OASIIS is headquartered
LocationHeadquarters
- HQ city
- Paris
- HQ country
- France
- HQ region
- Europe
Offices4 records
Markets served
OASIIS business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Environmental Consulting Services: Professional consulting fees for environmental performance studies, certifications, and commissioning services on construction projects. Revenue generated through project-based engagements with architects, developers, and public authorities.
Go-to-market motion2 records
Distribution channels4 records
Marketing channels4 records
OASIIS product offering
Product offeringCore offering
OASIIS is a French environmental performance consulting firm that delivers BET Environnement (environmental engineering studies), AMO Qualit\u00e9 Environnementale (project management assistance for environmental certifications), and Commissionnement (building commissioning) services. The firm helps architects, developers, and public authorities achieve environmental certifications (HQE, BREEAM, LEED, BBCA, BDM, PassivHaus, E+C-, RE2020) and optimize energy efficiency, carbon footprint, and occupant comfort across healthcare, education, commercial, hospitality, sports, and public building projects.
Product overview
OASIIS is an environmental performance consulting firm (bureau d'expertise en performance environnementale) providing comprehensive consulting services for sustainable building projects in France. The company operates across multiple service lines: BET Environnement for technical environmental engineering studies, AMO Qualité Environnementale for environmental project management assistance, and Commissionnement services for building commissioning. OASIIS specializes in helping clients obtain environmental certifications including HQE, BREEAM, LEED, BBCA, BDM, and RE2020. The firm serves diverse sectors such as healthcare, education, sports facilities, hotels, housing, and public buildings, offering studies including thermal dynamic simulations, energy simulations, daylight studies, aeraulic studies (CFD), and life cycle assessments (ACV).
Differentiator
Problem solved
Functional benefit
Products and services
- BET Environnement Environmental engineering consulting providing technical studies and analysis for construction projects, including thermal dynamic simulations (STD), energy studies (SED), daylight studies (FLJ/ALJ), aeraulic studies (CFD), and life cycle assessments (ACV). Targeted at architects, developers, and public authorities.
- AMO Qualit\u00e9 Environnementale Project management assistance for environmental quality, guiding clients through certification processes including HQE, BREEAM, LEED, BBCA, BDM, PassivHaus, E+C-, and RE2020 compliance. Targeted at building owners, developers, and project teams.
- Commissionnement (Commissioning) Building commissioning services ensuring building systems perform as designed, from pre-conception through construction, reception, and operational phases. Targeted at developers, public authorities, and institutional building owners.
- Expertises Sectorielles Specialized environmental consulting across sectors including healthcare, education, sports facilities, hotels, housing, and public buildings, adapting technical approaches to each sector's specific requirements. Targeted at sector-specific clients.
Quantifiable outcome
- First Cradle to Cradle certified commercial center in France (Centre Commercial Vélodrome Marseille)
- +3 more outcomes
Companies that use OASIIS
Customer profileNamed customers20 records
Segments7 records
Ideal customer profiles3 records
OASIIS technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
OASIIS partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered major, core and innovative.
- CIRMAD GRAND SUDmajorCollaboration with CIRMAD on the Centre Commercial Vélodrome Marseille project, achieving the first Cradle to Cradle certification for a commercial center in France.
- Michel BEAUVAIS Architecte - PariscorePartnership on the Médipôle de Koutio project in New Caledonia - the first HQE certified public building in the territory, demonstrating successful international collaboration on complex healthcare facilities.
- MBA Michel BEAUVAIS AssociéscoreLong-standing partnership spanning over 20 years with Michel BEAUVAIS architect on hospital projects across France, Africa, Caribbean, and Pacific territories. Together they have designed more than 20 reference hospital establishments, combining architectural vision with environmental engineering expertise.
- Christian BIECHER ArchitectescoreOngoing collaboration on major urban development projects including the Ordener Poissonniers project in Paris 18th arrondissement.
- Multiple French Architectural FirmscorePartnerships with over 200 French and international architectural firms including Herzog & De Meuron, Snohetta, Rudy Ricciotti, Wilmotte & Associés, Baumschlager Eberle, KCAP Rotterdam, and many others for integrated environmental consulting on construction projects.
- EIFFAGE ConstructionmajorPartnership with EIFFAGE on multiple projects including the Tribunal Administratif Montreuil and Grand Site Administration Centrale Malakoff.
- FAYAT BâtimentmajorPartnership with FAYAT Bâtiment on the Musée du Grand Siècle Saint-Cloud project (MPGP-CREM) and Pole Femme Mere Enfant CHU Pau.
- VINCI Construction FrancemajorPartnership with VINCI Construction France on the Hôtel des Polices de Nice project (180M€ HT).
- BENOY (Londres)majorInternational partnership with BENOY architects on the Centre Commercial Vélodrome Marseille project.
- SYMBIO2 ConsortiuminnovativeParticipation in the SymBIO2 consortium led by XTU, awarded 4.8M€ FUI 15 funding including 1.75M€ subsidies for biofacade development project of 200m².
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
OASIIS competitors and assessment
Company assessmentBroad incumbents
- Egis: Large French engineering group with broad environmental, sustainability, and building performance capabilities across transport, infrastructure, and buildings. Competes with OASIIS for large public-sector and developer mandates but as part of a much wider portfolio.
- setec: Independent French engineering group whose Elan subsidiary delivers environmental consulting for buildings. A broad incumbent competitor to OASIIS with significantly larger multidisciplinary capabilities and international footprint.
- Bureau Veritas: Global testing, inspection, and certification giant active in building environmental certification (HQE, BREEAM, LEED). Competes with OASIIS on certification mandates at much larger scale, particularly for public and commercial real estate clients.
- Artelia: Major French engineering and project management group with a sustainability and environmental performance practice. Competes for complex environmental consulting mandates on construction projects, though operating at much greater scale across multiple disciplines.
Direct peers
- Burgeap: French environmental engineering consultancy (part of Equans) providing environmental site assessments, regulatory compliance, and sustainable building services. Comparable to OASIIS in environmental consulting scope for infrastructure and building projects.
- TERAO: French engineering consultancy specializing in energy and environmental performance of buildings, with comparable services in HQE, BREEAM, LEED, RE2020, thermal simulation, and lifecycle assessment. Direct peer to OASIIS in building environmental consulting across France.
- Franck Boutté Consultants: French environmental and energy engineering consultancy specialized in sustainable building design, bioclimatic architecture, and certification support. Direct competitor to OASIIS in environmental performance consulting for construction projects.
- Ginger (Groupe Ginger): Major French environmental and geotechnical engineering group offering building environmental studies, certification support, and site diagnostics. Overlaps directly with OASIIS on environmental performance consulting for construction projects in France.
- Elan (setec group): Environmental and sustainable building consultancy within the setec engineering group, providing HQE, BREEAM, and energy performance consulting for buildings. Closely comparable to OASIIS in scope and French market focus.
Emerging players
- EODD Ingénierie: French environmental engineering consultancy focused on sustainable construction, environmental assessments, and building performance. Comparable to OASIIS in service scope, with growing presence in certification and lifecycle assessment.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
OASIIS social profiles
Digital presenceOASIIS compliance and trust
Trust signalCompliance8 records
OASIIS financial estimates
Financial estimateRevenue estimate
Valuation estimate
OASIIS leadership team
Management profileNumber of profiles
OASIIS funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
OASIIS M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about OASIIS
What does OASIIS do?
OASIIS is a French environmental performance consulting firm that delivers BET Environnement (environmental engineering studies), AMO Qualit\u00e9 Environnementale (project management assistance for environmental certifications), and Commissionnement (building commissioning) services. The firm helps architects, developers, and public authorities achieve environmental certifications (HQE, BREEAM, LEED, BBCA, BDM, PassivHaus, E+C-, RE2020) and optimize energy efficiency, carbon footprint, and occupant comfort across healthcare, education, commercial, hospitality, sports, and public building projects.
Is OASIIS a public or private company?
OASIIS is a private company. It is classified as unknown and is currently operating.
When was OASIIS founded?
OASIIS was founded in 1989. It employs 11 to 50 people.
Where is OASIIS based?
OASIIS is headquartered in Paris, France, in the Europe region.
How does OASIIS make money?
One revenue line is on record: environmental Consulting Services.
Who are OASIIS's main competitors?
Broad incumbents on record are Egis, setec, Bureau Veritas and Artelia. Direct peers are Burgeap, TERAO, Franck Boutté Consultants, Ginger (Groupe Ginger) and Elan (setec group). EODD Ingénierie is listed as an emerging player.
Does OASIIS have an API?
No public API is recorded for OASIIS.
What industry is OASIIS in?
OASIIS's product category is Environmental Engineering Consulting. Its primary akta.pro industry code is BPAHAJAF, EHS Management Systems & ISO Consulting (ISO 14001/45001), with a secondary code of BPAHAJAB, Environmental Impact Assessment (EIA) & Due Diligence. Its NAICS code is 54162 and its SIC code is 8711.