LSDIAG

Name

LSDIAG

Legal name

SARL LSDIAG

Website

https://lsdiag.fr

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Real Estate Building Diagnostics

NAICS

Testing Laboratories and Services (54138)

SIC

Services-Testing Laboratories (8734)

akta.pro primary industry

Asbestos, Lead-Based Paint & Hazardous Building Materials Surveys (Pre-Acquisition/Demolition) (EUAHAEAF)

Keywords

• Real estate diagnostics
• Energy performance auditing
• Building thermal imaging
• HVAC installation services
• Property compliance certification

Headquarters

HQ city

Vaux-sur-Seine

HQ country

France

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Individual Diagnostic Services (DDT - Dossier de Diagnostic Technique): One-time fees for individual mandatory real estate diagnostic certificates required for property sales and rentals in France. Services include: asbestos, lead (CREP), termites, natural/technological risks (ERNT), gas, electricity, energy performance (DPE), Loi Carrez measurement, and sanitation diagnostics.
2. Energy Auditing and Environmental Studies: One-time fees for energy audits and environmental engineering studies for residential, tertiary, and industrial buildings, including thermography and permeability testing.
3. Professional Training Courses: Training fees for professional development in energy performance and environmental building performance. Covers HQE (High Environmental Quality), energy performance, refrigeration regulations, heating, electricity, and safety/habilitation certifications.
4. HVAC Installation, Maintenance, and After-Sales Service: Installation, maintenance, and repair services for heating, air conditioning, plumbing, and sanitation systems in Île-de-France (78, 95, 92, 75), available 24/7.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

SARL LSDIAG provides certified French real estate diagnostic services bundled in the Dossier de Diagnostic Technique (DDT) — covering asbestos, lead (CREP), termites, gas, electrical, energy performance (DPE), Loi Carrez, ERNT, and sanitation assessments — required for property sales and rentals. Beyond mandatory diagnostics, the company offers energy audits, infrared thermography, air permeability testing, professional training in environmental performance, and HVAC, plumbing, and sanitation installation and maintenance services across three agencies in Île-de-France and Sud Ouest.

Product overview

LSDIAG is a French real estate diagnostic company operating under a unified service model centered on the Technical Diagnostic File (Dossier de Diagnostic Technique - DDT), which combines mandatory property assessments required for real estate transactions. The core diagnostic portfolio includes Amiante, Plomb (Lead/CREP), Termites, Electricité, Gaz, Diagnostic Performance Energétique (DPE), Loi Carrez, ERNT, and Assainissement services. Beyond diagnostics, the company offers environmental performance services including Energy Audits, Infrared Thermography, and Air Tightness Testing (Infiltrométrie), along with PTZ Ecologique advisory for government energy loans. LSDIAG provides professional training through its Formation Performance Environnementale and Ingénierie de Formation programs. Additionally, the company operates a facilities management division offering Installation & Maintenance services for Heating, Air Conditioning, Plumbing, Sanitation, and 24/7 emergency repairs. The company serves clients across three agencies in Ile de France (Yvelines 78, Val d'Oise 95, and Paris 75) and South-West (Gironde 33), with service coverage extending across 14 French departments through its online quote system.

Differentiator

Problem solved

Functional benefit

Products and services

• Dossier de Diagnostic Technique (DDT) — Real Estate Diagnostic File Comprehensive real estate diagnostic service bundling the mandatory assessments (health, safety, and environmental performance sections) required for property sales and rentals in France, delivered by certified diagnosticians at three LSDIAG agencies.
• Diagnostic Amiante (Asbestos Diagnostic)
• Diagnostic Plomb / CREP (Lead Diagnostic)
• Diagnostic Termites (Termite Inspection)
• Diagnostic Électricité (Electrical Diagnostic)
• Diagnostic Gaz (Gas Diagnostic)
• Diagnostic Performance Énergétique (DPE — Energy Performance Certificate)
• Diagnostic Loi Carrez (Carrez Surface Measurement)
• Diagnostic ERNT (Natural and Technological Risk Statement)
• Diagnostic Assainissement (Sanitation Diagnostic)
• DPE Bâtiment Public (Public Building Energy Performance Display)
• Audit Énergétique (Energy Audit)
• Thermographie Infrarouge (Infrared Thermography)
• Perméabilité à l'Air / Infiltrométrie (Air Tightness Testing)
• PTZ Ecologique (Eco Zero-Interest Loan Advisory)
• Formation Performance Environnementale (Environmental Performance Training)
• Ingénierie de Formation (Custom Training Engineering)
• Installation & Maintenance Chauffage (Heating Installation & Maintenance)
• Climatisation (Air Conditioning Installation & Maintenance)
• Plomberie & Sanitaire (Plumbing & Sanitary Services)
• Travaux Assainissement (Sanitation Works)
• SAV Dépannage (24/7 After-Sales Emergency Service)
• Devis en Ligne (Online Diagnostic Quote)

Quantifiable outcome

• DPE (Energy Performance Certificate) valid for 10 years
• +3 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Ten partnerships are on record, tiered minor.

• Eco Construction Seine AvalminorGTM or Marketing PartnerLSDiag is a member of Eco Construction Seine Aval, a professional network of companies specializing in eco-construction in the Seine Aval territory. Membership provides visibility among environmentally conscious professionals and access to collaborative projects in the Yvelines region.
• GROHEminorOthersGROHE supplies bathroom fixtures and fittings including faucets, showers, kitchen taps, and sanitary systems. LSDiag uses GROHE products for plumbing and sanitary installations and prominently displays the GROHE brand on its website.
• Jacob DelafonminorOthersJacob Delafon supplies bathroom products including fixtures, faucets, and accessories. Used by LSDiag for bathroom and sanitary installations.
• AlliaminorOthersAllia supplies bathroom fixtures including washbasins, toilets, showers, bathtubs, and bathroom furniture. Used by LSDiag for sanitary installations.
• Daikin FranceminorOthersDaikin is a leading manufacturer of air conditioning, heating, refrigeration, and centralized systems. LSDiag installs and uses Daikin equipment for residential, commercial, and industrial climate control projects.
• Mitsubishi Electric FranceminorOthersMitsubishi Electric supplies heating and air conditioning solutions for residential, commercial, and industrial applications. LSDiag uses Mitsubishi Electric equipment for climate installations.
• Toshiba Air ConditioningminorOthersToshiba Air Conditioning provides climate control systems focused on comfort and environmental balance. Used by LSDiag for climate installations.
• De DietrichminorOthersDe Dietrich is a heating solutions provider including boilers, heat pumps, solar installations, and hot water tanks. LSDiag uses De Dietrich products for heating installations.
• Viessmann FranceminorOthersViessmann offers a complete range of heating equipment: oil, gas, solar, wood, and heat pumps. Used by LSDiag for heating system installations.
• FlygtminorOthersFlygt (Xylem brand) supplies pumping and lifting station solutions. Used by LSDiag for sanitation and lifting station installations.

Scale indicators2 records

Direct peers

• EX'IM: Franchised French network of building diagnostic firms offering DDT, energy audits, and technical building studies; directly comparable to LSDiag in customer base (real estate agencies, notaries, homeowners) and service scope.
• Agenda Diagnostics: One of the largest French networks of certified real estate diagnosticians offering the full DDT (asbestos, lead, termites, DPE, etc.); directly competes with LSDiag in property transaction diagnostics across France.
• Activ'Expert: French network of independent certified diagnosticians providing DDT diagnostics and energy performance studies; same customer segments (real estate professionals and private owners) and regulatory product set as LSDiag.
• Diag Précision: French certified real estate diagnostics firm offering the standard DDT bundle (asbestos, lead, DPE, gas, electricity, termites, Loi Carrez) to individual and professional clients; close regional competitor with similar service mix.
• AC Environnement: French building diagnostics specialist covering asbestos, lead, termites, energy performance (DPE) and indoor air quality; competes head-to-head with LSDiag's diagnostics practice in regional markets.
• Diagad: French regional building diagnostics firm offering DDT diagnostics (asbestos, lead, DPE, termites, etc.) to property owners and professionals; directly comparable operating model to LSDiag at a regional level.

Broad incumbents

• DEKRA: German-based global TIC firm with French operations in building inspection, real estate diagnostics, and certification; competes on the regulated diagnostic side as a broad incumbent rather than a regional specialist.
• SGS: Swiss-headquartered global TIC company with French building and real estate inspection services; an incumbent offering adjacent capabilities rather than a focused diagnostics specialist.
• Bureau Veritas: Global TIC major with substantial French building inspection, certification, and real estate services; offers DDT-adjacent capabilities through its Building & Infrastructure division but as part of a much broader portfolio.
• SOCOTEC: French TIC leader with deep building inspection, asbestos/lead diagnostics, energy performance, and training practices; broader portfolio than LSDiag but directly overlapping in regulated real estate diagnostics.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/lsdiag

Compliance11 records

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 LSDIAG