Cairn Ingenierie

What Cairn Ingenierie does

Cairn Ingénierie is a privately held French building engineering consultancy (Bureau d'Études bâtiment) headquartered at 7 bis rue Alfred Kastler, 44300 Nantes. Founded in 2015 in Loire-Atlantique, the firm operates as a multi-disciplinary engineering practice covering all construction trades ('Tous Corps d'État') across seven technical domains: structural engineering (STR), roads and utilities (VRD), HVAC and plumbing (CVC PB), electrical systems (CFO CFA), fire safety and security (CSSI), environmental consulting (ENV), and construction economics (ECO). With 20 collaborators, the firm markets an integrated, single-point-of-responsibility engineering offer for building construction and renovation projects, and positions its work around the stated philosophy of combining architectural sensibility ('dialogue de l'Architecture et de la Technique') with environmental consciousness ('soucieuse du vivant').

The company's commercial proposition targets institutional and private clients undertaking mid-to-large-scale construction, evidenced by three publicly referenced projects — a Collège (17M€), EESI (10M€), and EPF (7M€) — all in the education vertical. Revenue is generated through project-based professional services contracts won via competitive tendering on public and private construction projects; specific fee rates, pricing models, and revenue figures are not publicly disclosed. The firm distributes services directly through project contracts, operates with a domestic focus in the Nantes/Pays de la Loire region of western France, and at present has no disclosed funding history, no parent company, no M&A activity, and no partnerships or alliances on file.

The technology base is conventional building engineering consulting practice rather than a proprietary platform: no AI/ML capabilities, software products, API surface, or patents are referenced. Brand and pipeline development are run through a company website (cairn-ingenierie.fr) which the firm itself notes is being redesigned (40% complete) to better showcase its first-decade portfolio. Overall, Cairn Ingénierie is a small, specialized, regionally rooted French engineering consultancy whose investment-relevant signals are limited to its operating history, project references, and headcount, with minimal disclosure on revenue, ownership, or growth trajectory.

Name

Cairn Ingenierie

Legal name

Cairn Ingénierie

Website

https://cairn-ingenierie.fr

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

Cairn Ingénierie is a Nantes-based, privately held French building engineering consultancy (Bureau d'Études) founded in 2015 that delivers multi-disciplinary structural, HVAC, electrical, fire-safety, environmental, and economic engineering services to public educational institutions and private construction clients across western France.

Ownership category

akta.pro rank

Product category

Building Engineering Consultancy

NAICS

Engineering Services (541330)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

Keywords

• Building engineering consultancy
• Structural engineering design
• HVAC system design
• Fire safety engineering
• Construction economics consulting

Headquarters

HQ city

Nantes

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Engineering Consultancy Services: Professional engineering services for construction projects encompassing structural studies, road/utility engineering, HVAC systems, electrical installations, fire safety, environmental assessments, and cost economics. Revenue is generated through project-based contracts with institutional and private clients undertaking building construction or renovation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Cairn Ingenierie is a multi-disciplinary building engineering consultancy (Bureau d'Études Bâtiment) that coordinates all construction trades — structure, roads/utilities, HVAC/plumbing, electrical, fire safety, environment, and construction economics — for institutional and private building projects. The firm provides integrated engineering studies and design services from its office in the Nantes metropolitan area, serving clients across the Greater West region of France.

Product overview

Cairn Ingénierie is a building engineering firm (Bureau d'Études bâtiment) offering comprehensive multi-discipline engineering services across all construction trades. The firm specializes in structural engineering (STR), civil engineering infrastructure (VRD), HVAC/mechanical systems (CVC PB), electrical systems (CFO CFA), fire safety and security (CSSI), environmental consulting (ENV), and construction economics (ECO). The single unified service offering covers the complete lifecycle of building projects from initial studies through construction execution.

Differentiator

Problem solved

Functional benefit

Products and services

• Bureau d'Études Bâtiment (Multi-disciplinary Building Engineering Studies) Integrated multi-disciplinary building engineering service covering structural engineering, roads and utilities, HVAC and plumbing, high-current and low-current electrical systems, fire safety systems coordination, environmental engineering, and construction economics for institutional and private-sector building projects.

Named customers3 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators4 records

Recent moves3 records

Expansion highlights3 records

Broad incumbents

• Ingérop: French engineering consultancy active in building, infrastructure, water, and energy. Provides similar multi-disciplinary building engineering services to public and private clients across France, with national reach exceeding Cairn's regional footprint.
• Technip Energies: Although more focused on energy and process engineering, Technip Energies operates engineering centres in France with comparable project-based multi-discipline consulting capabilities that overlap with Cairn's environmental and structural scopes.
• Setec: Independent French engineering group with strong building, transport, and energy practices. Setec's Bâtiment division offers structural, MEP, and environmental engineering — a directly comparable multi-disciplinary BET offering to Cairn's.
• Bureau Veritas Construction: Major TIC and engineering services firm active in French construction project supervision, technical control, and engineering studies. Overlaps with Cairn's CSSI (fire safety) and structural engineering scope on public building projects.
• Egis: Major French-headquartered engineering group delivering multi-disciplinary building, infrastructure, and environmental services. Egis competes directly with Cairn on public-sector construction tenders but operates at national/international scale with thousands of engineers.
• Socotec: French testing, inspection, and engineering firm with significant building and infrastructure practices. Comparable in delivering engineering studies and technical oversight on French public construction projects, though at substantially larger scale.
• Artelia: French engineering consultancy covering construction, infrastructure, energy, and environment. Comparable Tous Corps d'État building engineering capabilities, though Artelia serves larger national and international projects than regional firms like Cairn.

Direct peers

• Alterea: French independent engineering consultancy specialised in building energy renovation and HVAC/electrical design. Direct competitor to Cairn on CVC PB, CFO CFA, and ENV scopes for French public-sector building projects.
• Ginger Group: French engineering group specialised in building, infrastructure, and environmental studies with a strong regional BET structure. Operates offices throughout France comparable in scale and service mix to Cairn's Nantes-based operations.

Others

• Tractebel (Engie Solutions): International engineering consultancy with a major French presence covering energy, buildings, and infrastructure. Comparable multi-discipline building engineering offering, particularly on large institutional projects where Cairn also operates.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat2 records

Key risks6 records

Key highlights5 records

Customer concentration

• Xx.com/CairnIngenierie
• LinkedInlinkedin.com/company/cairn-ingenierie

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 Cairn Ingenierie