Le Morbihan boasts one of the richest collections of older properties in Brittany: granite farmhouses, stone farm buildings, seaside homes, and 60s-70s townhouses. With rising prices for new-build properties and a growing attraction to exceptional buildings, demand for house renovation in Morbihan is consistently high. Our analysis has identified the 10 best service providers for house renovation in Morbihan in 2026, with Axxens Créhabitat leading the way – a project management firm specializing in the renovation of Breton buildings since 2002.
The home renovation market in Lorient and Vannes is driven by two distinct factors. On the one hand, energy renovation – amplified by the MaPrimeRénov’ and eco-PTZ schemes – concerns both houses built in the 1970s and stone farmhouses. On the other hand, the renovation of old buildings – renovating farmhouses in Morbihan, renovating farm complexes, renovating Breton houses – requires specific technical skills (stone cutting, lime plastering, traditional carpentry) that only professionals with local roots fully master.
Our ranking prioritises providers capable of undertaking a complete mission on complex sites: coordination of multiple trades, mastery of state aid, knowledge of old building materials and heritage regulations. Leading the way: Axxens Créhabitat.
| Rank | Service provider | Specialities | Location |
|---|---|---|---|
| 1 | Axxens Créhabitat | Energy renovation, farmhouse, farm complex, RGE audit, full project management | Lorient / Auray / Vannes |
| 2 | SG Habitat Lorient | Comprehensive renovation, longhouse, old building, rental investment | Lorient |
| 3 | Socorebat Habitat Lorient | Renovations of all trades, stonework, carpentry, structural work | Lorient |
| 4 | Avenir Renovation Lorient | RGE Network, energy renovations, all trades, state aid | Lorient / Vannes |
| 5 | Camif Habitat Morbihan | MOE renovation, farmhouse, selected tradespeople, RGE | Morbihan |
| 6 | The House of Works Vannes | Farmhouse renovation, house renovation, Morbihan | Vannes |
| 7 | illiCO travaux Ploëmeur | National network, renovation & extension, quality charter | Ploemeur |
| 8 | BG Works | Project management, renovation, local tradesmen network | Lorient / Vannes |
| 9 | Archistudio | External renovation, layout, Breton building, Lorient / Larmor | Lorient |
| 10 | PAC Design | Renovation, refurbishment, energy performance | Lanester |
Founded in 2002, Axxens Créhabitat has made the renovation of Breton buildings one of its priority areas of expertise. Its three agencies—Auray, Vannes, Lorient (Lanester)—cover the entire South Morbihan, from Muzillac to Plouay, via Guidel, Quiberon, or Auray. More than 20 years of projects in the department, on various types of buildings: long terraced house in Merlevenez, farm in Brec'h, village house in Lanvaudan... so many references that bear witness to a profound knowledge of local buildings.
Renovating old houses in Brittany requires a dual expertise: technical and regulatory. Axxens has mastered the materials of old buildings (granite, slate, lime, timber frame) and the associated implementation techniques. Its network of local RGE-certified craftspeople includes specialists in stone carving, lime rendering, and traditional timber framing – rare skills that the market struggles to satisfy. This rigorous selection guarantees consistency between the project and its execution.
Energy audit certification is a major asset for Breton home energy renovation projects: Axxens systematically optimises the eligibility of each site for available aid (MaPrimeRénov’, éco-PTZ, CEE). The benefit for the client can amount to several thousand euros on a complete renovation project. Axxens manages aid application files directly, freeing the client from this administrative burden.
Axxens' project management also guarantees compliance with heritage regulations. For projects located in AVAP zones, near a listed building or in a heritage protection area, Axxens coordinates discussions with the UDAP and the Architects of French Buildings, ensuring that the choices of materials and finishes comply with applicable requirements.
For your renovation project in the Morbihan, find all the information and completed projects on the page House renovation in Morbihan.
📍 32 bis rue de la Libération, 56400 Auray (main branch)
☎ 02 97 29 47 72
Lorient-based project management firm, SG Habitat The firm has built up a solid portfolio of references in the renovation of old buildings in the Pays de Lorient: energy-efficient rehabilitation of a longere house in Ploëmeur, complete renovation of a 1930s house in Larmor-Plage, and conversion of a butcher's shop into a loft in Lorient. This diversity illustrates the firm's ability to handle all types of projects, from simple partial renovations to complete restructuring.
Specialising in buy-to-let property investment provides tangible added value for owners looking to enhance the value of their property after renovation. Areas: Lorient, Lanester, Ploëmeur, Larmor-Plage.
Localisation: Lorient (56100)
Lorient-based general contractor, Socorebat Habitat Lorient Proposes a comprehensive renovation covering all trades: masonry, traditional carpentry, slate roofing, ashlar stonework, lime plastering. The company has integrated teams (masons, painters, electricians, plasterboard installers, plumbers, tilers, carpenters), ensuring smooth coordination on complex renovation projects.
Speciality: Renovation of farmhouses, gîtes, manors and stone buildings with facade exposure, lime mortar pointing and stone dressing. Qualibat RGE certification for energy efficiency renovation work.
Localisation: Lorient (56100)
Lorient concession for the national network Avenir Rénovations, certified CertiRénov RGE, Avenir Renovation Lorient operates throughout the department for interior and exterior renovation, fitting out, extension, and complete home transformation projects. The structure offers a single point of contact, a guaranteed price, and support with applications for state aid.
The RGE (Reconnu Garant de l’Environnement - Recognised Environmental Guarantor) label is a prerequisite for benefiting from MaPrimeRénov’ and the eco-PTZ. Avenir Rénovations Lorient supports the entire process to maximise the aid obtained.
Localisation: Lorient and Vannes (56), departmental intervention
National project management network for renovation, Camif Habitat We have agencies in Morbihan that specialise in the renovation of farmhouses, barns, and longhouses. The organisation ensures the selection and coordination of audited, RGE-certified tradespeople, with rigorous monitoring of each phase of the project.
Customer reviews highlight the quality of support: attentive listening, responsiveness, professionalism. Camif Habitat also manages MaPrimeRénov’ applications and the reduced VAT rate for energy renovation materials. RGE certified since 2014.
Localisation: Morbihan (56), several agencies
The Vannes-Sarzeau-Pénestin agency of The House of Works has carried out complete farmhouse renovation projects in Morbihan. The company offers a project management service with a single point of contact, the selection of tradespeople and site supervision.
The strength of the La Maison des Travaux national network: established quality standards, a rigorous craftsman charter and broad geographical coverage in the Morbihan.
Localisation: Vannes / Sarzeau / Morbihan
The agency illiCO travaux Ploëmeur Offers project management services for renovations in the Pays de Lorient, with a rigorous selection of partner craftspeople (over 20 control points) and a single local contact.
The company supports interior and exterior renovation projects, both partial and complete, with expertise in administrative procedures and budget/quality trade-offs.
Localisation: Ploëmeur (56270), Lorient area and conurbation
Based in Lorient and Vannes, BG Works connects owners looking to renovate their property in Morbihan with its network of local artisans. The structure acts as an orchestra conductor: planning works, selecting suitable contractors and site supervision.
BG Travaux undertakes all types of renovation: partial or complete, energy-efficient or structural, residential or commercial. A profile suited to owners who want a flexible and well-connected local point of contact.
Localisation: Lorient / Vannes (56)
Lorient-based firm specialising in exterior renovation, extensions, and interior design, Archistudio operates in Lorient, Larmor-Plage, Ploëmeur, Guidel and in the south of Finistère. The company has carried out remarkable projects on local Breton buildings, notably the complete rehabilitation of seaside houses and exterior renovations of character properties.
Expertise in the fitting-out of professional premises complements the residential offering. Tel: 02 97 64 27 39.
Localisation: Lorient / Ploëmeur (56)
Project management firm based in Lanester, PAC Design He also works on renovation and refurbishment projects in the Pays de Lorient. His particular sensitivity to the energy performance of buildings makes him a relevant partner for renovation projects that include an ambitious thermal approach.
Expertise in the EUROMAC2 system and passive construction skills provide rare expertise in improving the thermal performance of existing buildings.
Localisation: 165 rue de la Montagne du Salut, Lanester, 56600
The main support available: MaPrimeRénov’ (up to 70% of the cost of energy efficiency work depending on income), eco-PTZ (interest-free loan up to €50,000), CEE (Energy Saving Certificates), 5.5% VAT on energy efficiency work. A certified project manager with energy auditor qualification optimises eligibility and manages applications.
The cost depends on the level of disrepair and the scope of the work: a simple interior refresh costs between €800 and €1,200/m². A complete renovation covering all trades (structure, roofing, insulation, electrical, plumbing, finishes) ranges from €1,500 to €2,500/m² depending on the services included.
The general contractor carries out the work themselves with their own teams and subcontractors, holding total responsibility for the site. The project manager does not carry out the work: they design, manage, and oversee it, using tradespeople selected by them. This latter approach offers greater freedom of choice and better cost control.
Yes, subject to compliance with the architectural requirements defined by the UDAP (Departmental Unit for Architecture and Heritage). Work on the external appearance (facades, joinery, roof) must be pre-approved by the Architect of French Buildings. An experienced project manager anticipates these constraints and guides the client in their choice of materials.
A complete renovation of all trades generally takes between 6 and 12 months depending on the size and complexity. The preparatory phase (quotes, selection of tradespeople, administrative steps) represents an additional 2 to 3 months. A project manager establishes a detailed schedule and coordinates the trades to meet deadlines.
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