Attestation Légale

What Attestation Légale does

Attestation Légale is a French B2B compliance and document management platform operating as a sub-brand within the Once For All group (Once For All SAS), headquartered in Lyon and serving primarily the French construction industry. The platform functions as a trusted third-party intermediary that collects, verifies, and distributes regulatory compliance documents — Kbis extracts, social vigilance certificates, foreign employee lists, professional insurance attestations, and industry-specific qualifications (Qualibat, RGE, etc.) — between subcontractors and project owners. Verification is performed by 36 in-house experts delivering a documented 98%+ accuracy rate, supplemented by 'mandate for collection' and 'distribution mandate' features that propagate document updates across the Once For All network without manual effort.

The product surface extends beyond pure compliance into a B2B construction marketplace connecting 127,000+ companies and surfacing €130M+ in project opportunities, plus digitized construction site processes (connected panels with QR codes reducing site signage cost by 50%, worker verification, digital approval procedures, and operations management modules). Adjacent Once For All sub-brands — Actradis, Hiveo, Sywa, Batis, Viaco, Déclarations Légales — round out the ecosystem. The technology stack is described as a digital compliance platform with pre-qualification questionnaires integrating French anti-corruption (Sapin 2, CS3D) and ESG criteria including construction-sector carbon index, but no AI/ML components are disclosed.

The business model combines recurring subscription fees for compliance document management and pre-qualification services (paid either by the subcontractor or the project owner depending on the solution), marketplace transaction facilitation on €130M+ in surfaced opportunities, and digital construction site tools. GTM blends enterprise field sales (30 commercial contacts managing logos such as Bouygues Bâtiment, Nexity, and GA Smart Building) with self-serve SMB onboarding, inside-sales customer success (14 for suppliers, 9 for clients), and Marketplace Live community events held across French cities. Cumulative disclosed outside funding is approximately $7.67M (2016 EISMEA €1.49M and 2018 NextStage €5.04M), with the business having operated since 2012 under the Once For All parent group.

Name

Attestation Légale

Website

https://attestationlegale.fr

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

51–100 employees

Short description

Attestation Légale is a French B2B compliance and document verification platform serving the construction industry as part of the Once For All group, connecting 127,000+ subcontractors and project owners through document management, pre-qualification, and marketplace services across France.

Ownership category

akta.pro rank

Product category

Construction Compliance Management Software

NAICS

Investigation and Personal Background Check Services (561611), Building Inspection Services (54135), Testing Laboratories and Services (54138)

SIC

Services-Testing Laboratories (8734), Services-Computer Programming, Data Processing, Etc. (7370), Services-Legal Services (8111)

akta.pro primary industry

Credential, Education & Professional License Verification (BPAKAEAI)

Keywords

• Construction compliance management
• Subcontractor pre-qualification
• B2B construction marketplace
• Document verification services
• Regulatory compliance platform

Headquarters

HQ city

Lyon

HQ country

France

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Compliance Document Management Services: Platform fees for managing and verifying compliance documents such as Kbis extracts, social vigilance certificates, foreign employee lists, and professional insurance attestations. Some solutions are paid by the service provider, others by the project owner.
2. Marketplace Transaction Facilitation: Marketplace connecting project owners with subcontractors and service providers, facilitating pre-consultations and project sourcing with over €130M in project opportunities accessible through the platform.
3. Pre-qualification Services: Third-party pre-qualification questionnaires evaluating business ethics (anti-corruption) and ESG maturity including carbon index adapted to construction sector.
4. Digitized Construction Site Processes: Digital solutions for construction sites including connected panels, digital contract management, pre-qualification requests, and operational compliance tracking.

Pricing tiers

Go-to-market motion4 records

Distribution channels5 records

Marketing channels9 records

Core offering

Attestation Légale is a B2B digital compliance and document management platform serving the French construction industry. It enables project owners and subcontractors to collect, verify, share, and distribute regulatory compliance documents (Kbis, social vigilance certificates, foreign worker lists, professional insurance attestations) via a trusted third-party intermediary. The platform also operates a B2B construction marketplace connecting general contractors with subcontractors (€130M+ in project opportunities accessible), provides third-party pre-qualification questionnaires with ESG/anti-corruption criteria, and offers digitized construction site processes including connected panels with QR codes, contractor approval workflows, and digital operations management.

Product overview

Once For All operates as a unified platform group offering a comprehensive suite of compliance and construction management solutions. The portfolio centers on Attestation Légale (documentary compliance management), alongside specialized sub-brands Actradis and Hiveo targeting specific sectors. Key modules include: Conformité (document collection/distribution), Marketplace (B2B contractor sourcing with 127,000+ companies), Questionnaire de préqualification (ESG/anti-corruption third-party evaluation), and Processus de chantier dématérialisés (digitized site processes including connected panels with QR codes, approval procedures, operations management, and contractual documents). Additional brands include Sywa, Batis, Viaco, and Déclarations Légales. The ecosystem enables contractors to share over 3,000 document types, source qualified partners, and manage construction site compliance digitally.

Differentiator

Problem solved

Functional benefit

Products and services

• Attestation Légale Specialized B2B platform for managing and sharing legal compliance documents (Kbis, social attestations, tax certificates, foreign worker lists, professional insurance attestations) among construction industry clients. Functions as a trusted third-party intermediary for document verification and distribution. Targeted at donneurs d'ordres (project owners) and sous-traitants (subcontractors) in the French construction industry.
• Once For All Marketplace Construction B2B marketplace connecting general contractors and project owners with subcontractors and service providers. Enables pre-consultations, contractor sourcing, and business opportunity discovery across the Once For All network of 127,000+ companies, with the ability to contract new service providers within 48 hours.
• Pre-qualification Questionnaire (Questionnaire de préqualification) Online third-party evaluation questionnaire based on business ethics criteria (anti-corruption, Sapin 2 compliance) and ESG factors including carbon footprint index adapted to the construction sector. Enables project owners to assess and qualify subcontractors on standardized criteria.
• Digitized Construction Site Processes (Processus de chantier dématérialisés) Suite of digitized construction site processes including connected site panels, digital contractor approval procedures, operational compliance management, connected construction site panels with QR codes, and contractual document management for construction projects.
• Connected Construction Site Panel (Panneau de chantier connecté) Connected construction site panel with QR code functionality that offers 50% cost savings compared to traditional physical panels and facilitates real-time compliance management. Awarded the Trophée des Achats 2024 Gold Medal.

Quantifiable outcome

• Saves 185+ hours per year on administrative management of legal documents
• +5 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Once For All GroupcoreOthersAttestation Légale is one of the brands within the Once For All group, which also includes Actradis, Hiveo, Sywa, Batis, Viaco, Déclarations Légales, and the Once For All Marketplace. The group provides a comprehensive suite of compliance and document management solutions for the construction industry.

Scale indicators8 records

Recent moves5 records

Expansion highlights6 records

Market position

Competitive moat6 records

Key risks1 record

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@OnceForAll_France
• Facebookfacebook.com/onceforallfrance
• LinkedInlinkedin.com/company/alg-attestation-legale
• Xx.com/Attest_Legale

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds2 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Attestation Légale