BUREAU D'ETUDE LUDWIG

What BUREAU D'ETUDE LUDWIG does

BUREAU D'ETUDE LUDWIG is a French energy performance consultancy founded in 2020 and headquartered in Sausheim near Mulhouse. The firm provides energy performance diagnostics (DPE), energy audits, thermal studies, regulatory compliance services (Décret Tertiaire, DTG, PPT), project management assistance (AMO), and end-to-end accompaniment for residential and tertiary building renovation projects. It is structured around three operational poles — Ingénierie (engineering diagnostics), Accompagnement (Mon Accompagnateur Rénov'), and Administratif & Financier (subsidy administration) — and holds ANAH-approved Mon Accompagnateur Rénov' status, enabling client access to state subsidies of €400–€2,000 per engagement depending on income tier. The firm maintains domain specialization in geothermal solutions as a renewable heating/cooling alternative for buildings.

The company operates three regional offices in Mulhouse, Lyon, and Strasbourg, serving the Grand Est and Auvergne-Rhône-Alpes regions. Its customer base spans three segments: individual homeowners seeking DPE certification or renovation guidance, co-ownerships (Copropriétés) requiring mandatory DTG/PPT and collective DPE assessments, and tertiary sector building owners (>1,000 m²) navigating Décret Tertiaire compliance with its 40–60% consumption reduction targets by 2030–2050 and potential fines of up to €7,500 per building. Marketing channels include LinkedIn, Facebook, Instagram, Google Reviews (4.6 rating from 35+ reviews), Guide de l'Habitat, France Rénnov', and word-of-mouth referrals.

The business model is professional services-based, generating revenue through one-time diagnostic fees and multi-year renovation accompaniment contracts. Distribution is direct via on-site field delivery rather than digital self-service. The firm has served 50+ clients and improved energy performance across 150+ dwellings and 20+ buildings since founding. There is no disclosed external funding, parent company, or institutional ownership; the company operates as an independent micro-enterprise with 1–10 employees.

Name

BUREAU D'ETUDE LUDWIG

Legal name

BUREAU D'ETUDE LUDWIG

Website

https://bureauetudesludwig.fr

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1–10 employees

Short description

French energy consultancy founded in 2020, providing DPE diagnostics, energy audits, thermal studies, and ANAH-approved Mon Accompagnateur Rénov' accompaniment for individual homeowners, co-ownerships, and tertiary buildings across Grand Est and Auvergne-Rhône-Alpes.

Ownership category

akta.pro rank

Headquarters

HQ city

Sausheim

HQ country

France

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Energy Diagnostics and Audits: One-time diagnostic services including DPE (Diagnostic de Performance Énergétique), energy audits, and thermal studies for residential and commercial buildings
2. Mon Accompagnateur Rénov' Services: State-subsidized accompaniment services for energy renovation projects, with government funding covering 400-2,000€ depending on income level
3. Regulatory Compliance Services: DTG (Diagnostic Technique Global), PPT (Plan Pluriannuel de Travaux), and Tertiary Decree compliance services for property managers and co-ownerships

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

BUREAU D'ETUDE LUDWIG provides energy performance diagnostics (DPE), energy audits, regulatory and custom thermal studies, Décret tertiaire compliance support, Diagnostic Technique Global (DTG) and Plan Pluriannuel de Travaux (PPT) services for co-ownerships, and Assistance à Maîtrise d'Ouvrage (AMO) project management for individual homeowners, residential co-ownerships, and tertiary building owners across Grand Est and Auvergne-Rhône-Alpes. As an ANAH-approved Mon Accompagnateur Rénov' provider, it also delivers state-subsidized technical, financial, and administrative guidance for residential energy renovation projects.

Product overview

BUREAU D'ÉTUDE LUDWIG is a 2020-founded energy consultancy operating across Grand Est and Auvergne-Rhône-Alpes regions. The company is structured around three complementary poles — Ingénierie (engineering), Accompagnement (Rénov' scheme), and Administratif et Financier — and offers a unified suite of energy performance services centered on DPE (Diagnostic de Performance Énergétique). Its core product portfolio includes Audit énergétique, Études thermiques, DTG (Diagnostic Technique Global), Plan Pluriannuel de Travaux (PPT), Assistance à Maîtrise d'Ouvrage (AMO), and Mon Accompagnateur Rénov' (Anah-approved scheme). These services are delivered together as an end-to-end offering: diagnostics identify the baseline, engineering studies and PPTs define the roadmap, and AMO/accompaniment guides clients through execution and funding. The company specializes in geothermal solutions and serves individual homeowners, co-owner buildings (copropriétés), and tertiary sector clients.

Differentiator

Problem solved

Functional benefit

Products and services

• Audit énergétique Complete evaluation of a building's energy performance including a DPE, identifying improvement paths, quantifying potential savings, and building a coherent renovation plan for residential, co-ownership, and tertiary buildings.
• Études thermiques Regulatory or custom thermal studies optimizing insulation, heating, ventilation, and overall energy consumption for residential and tertiary buildings.
• Décret tertiaire Compliance support for owners and operators of tertiary buildings under the French Décret tertiaire, including a strategic and quantified action plan to meet consumption reduction targets of 40-60% by 2030-2050.
• Diagnostic Technique Global (DTG) Comprehensive assessment of the technical and regulatory condition of a co-ownership building, including DPE and a 10-year work plan for condominium associations.
• Diagnostic de Performance Énergétique (DPE) Mandatory energy performance diagnostic assigning an A-G energy label with improvement recommendations, available for individual homes and collective buildings (DPEC).
• Plan Pluriannuel de Travaux (PPT) Ten-year work schedule for co-ownership buildings identifying and prioritizing renovation, maintenance, and energy performance improvement needs.
• Assistance à Maîtrise d'Ouvrage (AMO) Project management assistance covering analysis, design, contractor consultation, funding applications, site monitoring, and quality control for energy renovation projects.
• Mon Accompagnateur Rénov' Rénov' scheme approved by ANAH providing personalized technical, financial, social, and administrative guidance for households undertaking energy renovation projects, with state aid covering 400-2,000€ of accompaniment costs based on income level.
• Simulateur d'aides de l'État (State Aid Simulator) Online tool enabling clients to quickly estimate state subsidies and financial aid for energy renovation projects, linked to the MaPrimeRénov' platform.

Quantifiable outcome

• 150+ dwellings have had energy performance improved, with DPE ratings enhanced after interventions
• +2 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Mon Accompagnateur Rénov' / ANAHcoreStrategic or Co-development PartnerOfficial approval as Mon Accompagnateur Rénov' by the Agence Nationale de l'Habitat (ANAH). This partnership enables the company to guide households through energy renovation projects with access to government subsidies, covering accompaniment costs of 400-2,000€ depending on income level.
• France Rénov'coreGTM or Marketing PartnerOfficial government platform for energy renovation. France Rénov' serves as the national reference for homeowners seeking subsidized energy renovation services, listing certified practitioners like Bureau d'Etude Ludwig.
• Guide de l'HabitatminorGTM or Marketing PartnerPartner platform showcasing the company's services, certifications, and completed projects to reach homeowners and housing professionals in the region.

Scale indicators5 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Bureau Veritas: Global testing, inspection, and certification group with established French DPE and building energy compliance services. Overlaps on regulatory diagnostics and tertiary-sector compliance but as one offering within a much wider portfolio.
• Socotec: Major French technical inspection and certification firm providing DPE, energy audits, and Décret tertiaire compliance. Competes in the same regulated diagnostic space but serves a broader construction and industrial client base.
• Dekra: Global testing and certification organization with French DPE and building energy compliance offerings. Overlaps on regulatory diagnostics but operates across many other verticals (automotive, industrial, telecom).

Direct peers

• Hellio: France's largest pure-play energy renovation specialist, ANAH-approved Mon Accompagnateur Rénov' partner with a national certified network. Closest direct competitor because it offers an end-to-end DPE, audit, accompaniment, and AMO stack to homeowners and copropriétés across all French regions.
• Effy: French energy renovation platform connecting homeowners with accredited artisans and offering DPE, audit, and accompaniment services. Highly comparable on customer profile (individual homeowners seeking subsidies) and Mon Accompagnateur Rénov' framework participation.
• GreenFlex: French energy and environmental efficiency consultancy delivering energy diagnostics, decarbonization roadmaps, and building performance advisory to commercial and residential clients. Comparable technical content with a stronger sustainability/carbon focus.
• izi by EDF: EDF Group subsidiary focused on building energy renovation for individuals and small businesses, including DPE, audits, and subsidy assistance. Same customer base and service categories, with significantly larger distribution muscle.
• Dorémi: French specialist in global energy renovation of individual houses, approved under Mon Accompagnateur Rénov'. Directly comparable technical offering (audit + travaux accompaniment) and customer segment.
• Verdi Ingénierie: Independent French engineering consultancy with strong activity in building energy efficiency, thermal studies, and AMO. Comparable mid-sized bureau d'études model with multi-region French offices.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInfr.linkedin.com/in/ludwig-bureau-d%E2%80%99%C3%A9tudes-b99731272

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 BUREAU D'ETUDE LUDWIG