Omega Alliance

What Omega Alliance does

Omega Alliance SARL is a French engineering consultancy (bureau d'études) operating for over 40 years under employee ownership (actionnariat salarial) with headquarters in Rennes and four regional agencies covering Ouest Bretagne (Rennes), Sud Ouest (L'Union/Toulouse), Ile de France (Epinay-sur-Orge) and Sud Est (Marseille). The firm serves maîtres d'ouvrage (project owners), architects, syndics de copropriété (building managers), and entreprises du BTP (construction companies), with a heavy skew toward French public-sector and institutional clients. It is co-managed by Gérants Daniel Monthéard and Jean-Luc Le Bars and operates with stated capital of €77,750 and a headcount of approximately 30-37 engineers and multidisciplinary technicians.

The service portfolio spans six integrated lines: Méthodes et Organisation de Chantier (construction methods and site organization), Ordonnancement, Pilotage et Coordination / MOex (scheduling and project coordination), Maîtrise d'Œuvre en Désamiantage et Déplombage (asbestos and lead remediation project management), Déconstruction Sélective (selective deconstruction), Assistance à Maîtrise d'Ouvrage (AMO), and Diagnostic PEMD (Products, Equipment, Materials and Waste diagnostics for demolition and renovation projects over 1,000 m²). Delivery is underpinned by six OPQIBI qualifications (0301, 0302, 0303, 0902, 1208, 1907) plus PEMD certification from CSTB/SEDDRe, which together constitute the regulated credentials required to bid on French asbestos, lead, deconstruction, and waste-diagnostic mandates. Notable project references include SOLIDEO's Village des Athlètes JO 2024 (€10.5M works, 480,000 m²), the Grand Palais rehabilitation for RMN-GP (€6.5M, 77,000 m²), the Aréna Le Colisée for Paris Terre d'Envol (€65M, 20,200 m²), and methods mandates on Société du Grand Paris Ligne 16.

The business operates on a project-based professional-services revenue model with no publicly disclosed rate card or pricing tiers; engagement is sales-led via direct B2B outreach and reputation-driven selection on public and private tenders. Marketing is anchored on the firm's website portfolio, LinkedIn presence, and reference network rather than paid acquisition or partnership channels. The firm has no disclosed external investors, no funding rounds, no M&A activity, and no subsidiaries, consistent with a stable SME structure optimized for continuity over rapid scale.

Name

Omega Alliance

Legal name

OMEGA Alliance SARL

Website

https://omegaalliance.eu

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

11–50 employees

Short description

Omega Alliance SARL is a French employee-owned engineering consultancy (bureau d'études) with four regional agencies that delivers construction methods, scheduling/coordination (OPC/MOex), asbestos and lead remediation project management, selective deconstruction, AMO, and PEMD waste diagnostics for French public-sector and institutional project owners.

Ownership category

akta.pro rank

Product category

Construction Engineering Consultancy

NAICS

Engineering Services (54133), Environmental Consulting Services (54162)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Testing, Inspection, Certification & Commissioning (TICx) Technical Services (BPAHAIAL)

akta.pro secondary industry

Environmental Compliance, Monitoring & Field Services (Sampling/IAQ/Inspections) (IMAIAGAF)

Keywords

• Construction engineering consultancy
• Asbestos remediation engineering
• Selective deconstruction services
• Project scheduling coordination
• PEMD waste diagnostics

Headquarters

HQ city

Rennes

HQ country

France

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Consulting Services: Revenue generated through fee-based engineering consulting services for construction projects, including project management, site organization, coordination, asbestos remediation oversight, selective deconstruction, and regulatory diagnostics.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Omega Alliance is a French engineering consultancy (bureau d'études) that provides construction methods, scheduling and coordination (OPC/MOex), asbestos and lead remediation project management, selective deconstruction, project owner assistance (AMO), and PEMD waste diagnostics to public and private project owners, architects, building managers, and construction firms. Services are delivered by approximately 30 engineers and multidisciplinary technicians across four regional agencies in France, covering projects from planning through execution.

Product overview

Omega Alliance is an engineering consulting firm (bureau d'études) offering a portfolio of integrated services for the construction and deconstruction industry. Their core offerings include Méthodes et Organisation de Chantier (construction methods and organization), Ordonnancement, Pilotage et Coordination OPC / MOex (scheduling and project coordination), Maîtrise d'Œuvre en Désamiantage et Déplombage (asbestos and lead removal project management), Déconstruction Sélective (selective demolition), Assistance à Maîtrise d'Ouvrage AMO (project owner assistance), and Diagnostic PEMD (waste diagnosis). These services are delivered by approximately 30 engineers and technicians across 4 regional agencies in France, supporting clients throughout the entire project lifecycle from planning through execution.

Differentiator

Problem solved

Functional benefit

Products and services

• Méthodes et Organisation de Chantier (Construction Methods and Site Organization) Optimization of construction processes to ensure efficient and controlled execution of large-scale projects with significant complexity, including site installation plans, construction methods, crane planning, detailed scheduling, and budget tracking. Targeted at maîtres d'ouvrage, architects, and construction companies on complex TCE projects.
• Ordonnancement, Pilotage et Coordination (OPC) / MOex Scheduling, project management and coordination services acting as chief conductor to ensure liaison and coordination between different project stakeholders, from study phase through project delivery, optimizing work execution and ensuring deadline compliance. Targeted at project owners and construction firms on multi-trade projects.
• Maîtrise d'Œuvre en Désamiantage et Déplombage (Asbestos and Lead Removal Project Management) Engineering and project management services for curage, decontamination (asbestos removal, lead paint treatment, soil remediation) for rehabilitation or selective deconstruction of various buildings including industrial sites, residential buildings, offices, and public establishments. Targeted at project owners and public institutions managing hazardous material compliance.
• Déconstruction Sélective (Selective Deconstruction) Selective deconstruction and demolition services for all types of structures (polluted industrial sites, hospitals, buildings, housing, public buildings), integrating potential decontamination, curage, selective deconstruction, and maximum waste recovery. Targeted at project owners and construction companies executing demolition in dense or sensitive environments.
• Assistance à Maîtrise d'Ouvrage (AMO) Project owner assistance including elaboration of technical programs, financial documentation, selection of construction processes, assistance with administrative documents, contract tendering, and execution monitoring. Targeted at maîtres d'ouvrage lacking internal capacity for complex project oversight.
• Diagnostic PEMD (Produits, Équipements, Matériaux et Déchets) Products, Equipment, Materials and Waste diagnosis identifying re-use potential, reuse, recycling, and waste quantities for demolition and heavy renovation operations over 1,000 m², in compliance with CSTB and SEDDRe certification standards. Targeted at project owners and developers subject to French waste recovery regulations.

Quantifiable outcome

• Village des Athlètes JO 2024: 480,000 m² of floor area, 27 buildings deconstructed with complete concrete reuse on site
• +2 more outcomes

Named customers13 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

Feature1 record

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Ingerop: French independent engineering group offering project management, construction methods, and deconstruction consulting — competes for similar AMO/OPC mandates but with broader technical disciplines and a larger national footprint.
• SOCOTEC: Major French TIC and engineering services group offering asbestos/lead diagnostics, construction project oversight, and deconstruction studies — competes with Omega Alliance on regulated building diagnostics but at materially larger scale across France and internationally.
• Bureau Veritas: Global TIC giant with strong French operations covering construction compliance, asbestos/lead inspection, and asset integrity services — overlaps with Omega Alliance's diagnostic and project oversight work but as part of a vastly broader portfolio.
• Egis: Large French engineering and consulting firm with deep public-sector infrastructure, transportation, and building project portfolios — overlaps with Omega Alliance on AMO, OPC, and methods consulting for major French public projects.
• Artelia: Major French engineering and project management group active in construction, infrastructure, and deconstruction — competes with Omega Alliance on OPC and methods engineering for large public works but operates at significantly greater scale.

Direct peers

• Verdi: Independent French engineering consultancy focused on AMO, OPC, environmental studies, and deconstruction for public and private project owners — closely comparable in scale, ownership ethos, and service mix.
• Diagobat: French specialist in asbestos, lead, termites, and PEMD diagnostics for real estate and demolition — directly comparable niche competitor in the regulated building-diagnostics segment.
• Ginger CEBTP: French engineering group providing construction diagnostics (including asbestos/lead/PEMD), geotechnical studies, and deconstruction project management — highly comparable service portfolio and similar focus on regulated building studies.
• Cabinet Merlin: Independent French engineering consultancy delivering AMO, OPC, methods, and environmental/deconstruction studies for public and private project owners — directly comparable mid-sized competitor with similar service mix and public-sector client base.
• BTP Consultants: French engineering consultancy specialized in asbestos, lead, and PEMD diagnostics plus AMO/OPC services for construction and demolition — the closest niche overlap with Omega Alliance in regulated building diagnostics and decontamination project management.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/omega-alliance

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Omega Alliance