Lamy Expertise
Lamy Expertise is a France-based independent building pathology and real estate valuation firm, founded 1982, serving individual homeowners, property managers, condominiums, and public authorities with on-site technical expertise, property valuation, and litigation-support services via a nationwide network of qualified experts.
- Company typePrivate
- Founded1982
- HeadquartersChampagne-au-mont-d'or, France
- Headcount11–50
- GTM typeB2B and B2C
- OfferingServices
What Lamy Expertise does
Lamy Expertise is a French independent building pathology and real estate valuation firm founded in 1982 by Philippe Lamy and headquartered in Champagne-au-Mont-d'Or (Lyon metropolitan area), operating as a Société par Actions Simplifiée (SAS). The firm delivers technical expertise services across residential property — crack and fissure diagnosis, moisture assessment, technical construction review, market valuation (valeur vénale), reception assistance, pre-acquisition opinions, insured/post-sinistre expertise, and CATEC technical assistance for legal proceedings. Its underlying capability is a methodology that combines structural and building-pathology analysis with market comparison and legal/insurance advisory, delivered by civil-engineering-qualified experts whose signed reports engage professional liability and are usable in court and insurance negotiations.
The firm operates a nationwide France coverage model through a network of locally positioned experts, supported by five regional phone lines, a website quote-request form with a 24-hour response SLA, and a mandataire/franchise-style recruitment platform (mandataire.lamy-group.com). It also maintains a Swiss office in Lausanne. Customers are primarily individual homeowners seeking independent diagnosis of construction defects, pre-purchase risk opinions, and dispute support against constructors and insurers; secondary segments include property managers, condominium management firms (syndics/copropriétés), local authorities, and industrial clients served via a dedicated professional phone line. Revenue is generated through quote-based professional service fees (typical market rate €1,000–€1,850 per crack expertise on a ~110 m² house), with additional revenue streams from a low-cost consultation tier (ChronoConsult, ExpertConsult, EasyExpertise), an Espace Client portal, and a 2021-launched professional training organization business.
The company is founder-led and privately held with no disclosed institutional investors; Stéphane Girois serves as Director General. Distribution leans on organic content marketing (department-level SEO, blog, YouTube channel, Google reviews), with 4.4/5 average rating across 177 reviews serving as a trust signal. Regulatory credentials held by the founder (CECAAM listing, CNEI Charte de l'Expertise Immobilière) reinforce the positioning of structural independence from construction and insurance actors as the firm's core differentiator.
Lamy Expertise firmographics
Firmographics- Name
- Lamy Expertise
- Legal name
- Lamy Expertise
- Website
- https://lamy-expertise.fr
- Company type
- Private
- Founded year
- 1982
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Lamy Expertise is a France-based independent building pathology and real estate valuation firm, founded 1982, serving individual homeowners, property managers, condominiums, and public authorities with on-site technical expertise, property valuation, and litigation-support services via a nationwide network of qualified experts.
- Ownership category
- akta.pro rank
Lamy Expertise industry classification
Industry- Product category
- Building and Real Estate Expertise Services
- NAICS
- Offices of Real Estate Appraisers (531320), Other Scientific and Technical Consulting Services (541690), Management, Scientific, and Technical Consulting Services (5416)
- SIC
- Services-Engineering Services (8711), Real Estate Agents & Managers (For Others) (6531)
- akta.pro primary industry
- Real Estate Valuation & Appraisal (BPAHANAC)
- akta.pro secondary industries
- Construction Progress & Draw Inspection Valuation (BPAJAKAM), Eminent Domain / Condemnation & Litigation Support Valuation (BPAJAKAJ)
Keywords
Where Lamy Expertise is headquartered
LocationHeadquarters
- HQ city
- Champagne-au-mont-d'or
- HQ country
- France
- HQ region
- Europe
Offices2 records
Markets served
Lamy Expertise business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D
Revenue model
- Expertise Fees - Individual Services: One-time professional service fees charged for individual building and real estate expertise missions (crack analysis, moisture assessment, technical construction review, property valuation). Customers request a personalized quote via the website form or phone. Pricing varies by property type, issue complexity, and required skills. The company mentions a free quote under 24 hours.
- Expertise Fees - Professional Services: Fee-based expertise services for professional clients including property managers (gestionnaires immobiliers), condominium management companies (copropriétés), local authorities (collectivités), and industrial clients. Dedicated phone line for professionals: 01 82 83 77 19.
- Low-Cost Consultation Services: Lower-cost consultation offerings including ChronoConsult, ExpertConsult, and EasyExpertise formulas for more accessible real estate analysis services.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | Standard expertise mission (fissures on a ~110 m² house) |
Go-to-market motion1 record
Distribution channels4 records
Marketing channels7 records
Lamy Expertise product offering
Product offeringCore offering
Lamy Expertise sells independent technical building expertise and real estate valuation services to French private property owners and professional clients. Named service lines include crack/fissure analysis, moisture and humidity diagnosis, technical construction expertise, property market valuation, construction-reception assistance, pre-acquisition opinions, insured post-sinistre expertise, and CATEC legal-procedure technical support. Services are delivered on-site by a France-wide network of civil-engineering-qualified experts and billed per mission on a quote basis.
Product overview
Lamy Expertise operates as a unified platform offering building and real estate expertise services. The core offering consists of technical expertise services including Expertise Fissures (crack analysis), Expertise Humidité (moisture analysis), Expertise Technique Construction (technical construction analysis), Expertise Valeur Vénale (property valuation), Assistance Réception (reception assistance), Avis Avant Acquisition (pre-acquisition assessment), and Expertise d'Assuré (insured expertise). Additional services include CATEC for legal procedure support, low-cost consultation options (ChronoConsult, ExpertConsult, EasyExpertise), professional training programs, and an Espace Client client portal. All services are delivered through a network of certified engineers across France.
Differentiator
Problem solved
Functional benefit
Products and services
- Expertise Fissures (Crack Analysis Expertise) Specialized crack and fissure analysis service for property owners facing structural cracks in residential buildings; delivers an independent technical opinion on causes, evolution, structural threats, and repair recommendations.
- Expertise Humidité (Moisture Expertise) Moisture and humidity diagnosis service for property owners experiencing damp, infiltrations, or related building-integrity and health concerns; delivers an independent assessment of causes and impacts.
- Expertise Technique Construction (Technical Construction Expertise) General technical construction expertise for property owners and professionals needing technical, economic, and legal opinions on building disorders, defects, and damage; identifies causes, estimates repair solutions, and establishes liability.
- Expertise Valeur Vénale (Property Market Valuation) Property market valuation service that determines the fair market value of a property using comparison methods, income capitalization, and technical condition analysis; for buying, selling, estate, or legal-proceeding purposes.
- Assistance Réception (Construction Reception Assistance) Reception assistance service that accompanies property owners through the formal reception of a new home, apartment, or construction work, anticipating defects and resisting contractor pressure.
- Avis Avant Acquisition (Pre-Acquisition Opinion) Pre-purchase technical-opinion service for prospective property buyers who want to identify potential defects and risks before signing a purchase agreement.
- Expertise d'Assuré (Insured Post-Sinistre Expertise) Post-loss expertise service that assists insurance policyholders in documenting property damage and obtaining fair compensation from insurers after disasters or damage events.
- CATEC (Conventions d'Assistance Technique et Conseil) Technical and economic assistance service for individuals engaged in court proceedings, helping them present technical evidence to a court-appointed expert per Article 161 of the French Code of Civil Procedure.
- Low-Cost Consultation Services (ChronoConsult, ExpertConsult, EasyExpertise) Tiered affordable consultation formulas providing lower-cost real-estate and building problem analysis, from basic to more comprehensive service levels, for budget-sensitive clients.
- Professional Training Programs (Organisme de Formation) Professional training programs (organisme de formation) for individuals aspiring to become building and real estate experts; shares Lamy's methodology in building pathology and property valuation. Established in 2021.
Quantifiable outcome
- 24-hour callback SLA for customer inquiries
- +2 more outcomes
Companies that use Lamy Expertise
Customer profileNamed customers5 records
Segments5 records
Ideal customer profiles3 records
Lamy Expertise technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Lamy Expertise partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- CECAAM (Compagnie des Experts près la Cour Administrative d'Appel de Marseille)corePhilippe Lamy, founder and President of Lamy Expertise, is listed on the CECAAM registry of court-appointed experts before the Administrative Court of Appeal of Marseille. This listing enables the firm to be appointed as judicial experts in administrative disputes.
- CNEI (Compagnie Nationale des Experts Immobiliers)corePhilippe Lamy is a signatory of the Charte de l'Expertise Immobilière as a member of the CNEI, the French national body for real estate experts. This affiliation establishes adherence to professional ethics and standards in real estate valuation.
Scale indicators5 records
Recent moves6 records
Expansion highlights6 records
Lamy Expertise competitors and assessment
Company assessmentDirect peers
- Allodiagnostic: National French network for real estate diagnostics including technical building assessments and pre-purchase inspections. Directly competes with Lamy's Avis Avant Acquisition and reception assistance services through a similar franchise-led model.
- AC Environnement: French building diagnostics specialist offering technical expertise, energy diagnostics, and pre-acquisition assessments across residential and commercial properties. Directly competes with Lamy's crack, moisture, and pre-acquisition services.
- expertise-sinistre.fr: Affiliated French platform coordinating post-disaster multi-trade building expertise. Already an ecosystem partner of Lamy Expertise, addressing the same sinistre/insured-expertise client base.
- Saretec (Sedgwick France): Saretec is one of France's largest post-sinistre (post-disaster) building expertise firms, now part of Sedgwick. It directly competes with Lamy's Expertise d'Assuré service for insurer-mandated and individual post-damage mandates.
Broad incumbents
- Ginger Group: French engineering and geotechnical services group covering building pathology, soil studies, and structural diagnostics. Overlaps with Lamy's technical expertise work but serves a broader infrastructure and environmental client base.
- Socotec: Socotec is a major French technical control and inspection firm offering construction expertise, building diagnostics, and technical advice. It overlaps with Lamy's Technical Construction Expertise and Reception Assistance services as a broader, more diversified incumbent.
- Bureau Veritas: Global TIC (testing, inspection, certification) leader with French operations covering construction technical control, building diagnostics, and real estate due diligence. Provides overlapping capabilities to Lamy as part of a much wider portfolio.
Regional players
- Strego Expertise: French building and real estate expertise firm focused on construction disputes and technical assessments. Comparable to Lamy in services offered though with a more regional geographic footprint.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Lamy Expertise social profiles
Digital presenceLamy Expertise compliance and trust
Trust signalCompliance3 records
Lamy Expertise financial estimates
Financial estimateRevenue estimate
Valuation estimate
Lamy Expertise leadership team
Management profileNumber of profiles
Profiles3 records
Lamy Expertise funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Lamy Expertise 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 Lamy Expertise
What does Lamy Expertise do?
Lamy Expertise sells independent technical building expertise and real estate valuation services to French private property owners and professional clients. Named service lines include crack/fissure analysis, moisture and humidity diagnosis, technical construction expertise, property market valuation, construction-reception assistance, pre-acquisition opinions, insured post-sinistre expertise, and CATEC legal-procedure technical support. Services are delivered on-site by a France-wide network of civil-engineering-qualified experts and billed per mission on a quote basis.
Is Lamy Expertise a public or private company?
Lamy Expertise is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Lamy Expertise founded?
Lamy Expertise was founded in 1982. It employs 11 to 50 people.
Where is Lamy Expertise based?
Lamy Expertise is headquartered in Champagne-au-mont-d'or, France, in the Europe region.
How does Lamy Expertise make money?
Three revenue lines are on record. Expertise Fees - Individual Services are the primary driver. The others are expertise Fees - Professional Services and low-Cost Consultation Services.
Who are Lamy Expertise's main competitors?
Direct peers on record are Allodiagnostic, AC Environnement, expertise-sinistre.fr and Saretec (Sedgwick France). Broad incumbents are Ginger Group, Socotec and Bureau Veritas. Strego Expertise is listed as a regional player.
Does Lamy Expertise have an API?
No public API is recorded for Lamy Expertise.
What industry is Lamy Expertise in?
Lamy Expertise's product category is Building and Real Estate Expertise Services. Its primary akta.pro industry code is BPAHANAC, Real Estate Valuation & Appraisal, with a secondary code of BPAJAKAM, Construction Progress & Draw Inspection Valuation. Its NAICS code is 531320 and its SIC code is 8711.