Atelier de Conservation et de Conception Architecturale

What Atelier de Conservation et de Conception Architecturale does

ACCA (Atelier de Conservation et de Conception Architecturale) is a French heritage architecture firm operating as a Société Civile Professionnelle, headquartered in Toulouse with a secondary office in Carcassonne. Founded in 2015 as SCP d'architecture Tarbouriech & Robert-Cols and rebranded to ACCA in 2019, the firm is led by Pascal Robert-Cols (Gérant, Diplômé du Centre des Hautes Études de Chaillot — DSA mention Architecture et Patrimoine) and Christiane Tarbouriech (Architecte DESA). The firm specializes in the conservation, restoration, and valorization of classified (Classé MH) and inscribed (Inscrit MH) historic monuments — Romanesque churches, fortified towers, priories, châteaux, and civic façades — across at least eight southern French departments (Ariège, Aude, Haute-Garonne, Hérault, Pyrénées-Orientales, Tarn, Tarn-et-Garonne, Var), with select missions in Corsica.

The firm's practice is built on rigorous field observation and graphic documentation produced in the tradition of historic survey methods, using 3D imaging, digital photogrammetry, and multi-scale plans, elevations, and sections. It runs the Ad Libitum open-data platform, which makes project fact sheets, drawings, and 3D models of studied edifices freely downloadable, functioning both as a public-knowledge resource and as a demonstration portfolio. Three core service lines are offered: Heritage Conservation Services (études préalables through mission de base), the Ad Libitum open-data platform, and Urban Analysis and Design (AVAP studies, public space requalification).

ACCA operates on a project-based professional services fee model, with revenue earned through public procurement (concours, études préalables, appels d'offres) and direct commissions from French municipalities, departmental councils, dioceses, and private heritage property owners. A specialist partner network — historians, archaeologists, structural engineers, heritage craftsmen, and peer architects (Florence Guillot, Marie-Élise Gardel, Le Chantier Lumineux, Carmela-Milena Annaloro, among others) — is assembled per project. The firm does not disclose revenue, has no external investment, and operates as an independent professional partnership.

Name

Atelier de Conservation et de Conception Architecturale

Legal name

S.C.P. D'ARCHITECTURE TARBOURIECH & ROBERT-COLS

Website

https://acca.archi

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

1–10 employees

Short description

Atelier de Conservation et de Conception Architecturale (ACCA) is a French Société Civile Professionnelle of heritage architects that conserves, restores, and valorizes classified and inscribed historic monuments for French municipalities, dioceses, and private owners across southern France.

Ownership category

akta.pro rank

Product category

Heritage Architecture Services

NAICS

Architectural Services (54131), Architectural Services (541310)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Landscape Architecture & Site Design (BPAHAKAC)

Keywords

• Heritage architecture conservation
• Historic monument restoration
• Building conservation services
• Urban heritage studies
• Patrimoine architecture services

Headquarters

HQ city

Toulouse

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architecture and Heritage Conservation Services: ACCA generates revenue through professional architecture and heritage conservation fees. The firm is commissioned by public entities (communes, departmental councils, dioceses) and private owners for defined project engagements. Revenue accrues from preliminary studies (études préalables), complete maîtrise d'œuvre missions (base mission), emergency conservation work, and AMO (assistance à maîtrise d'ouvrage) assignments. Projects are typically structured as public procurement commissions or direct private commissions.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

ACCA is an architectural firm (Architectes du patrimoine) specializing in the conservation, restoration, and valorization of classified and inscribed historic monuments across southern France. The firm delivers professional heritage architecture services spanning preliminary diagnostic studies (études préalables), complete maîtrise d'œuvre missions, emergency stabilization, AMO (assistance à maîtrise d'ouvrage), and urban/heritage studies (AVAP). It accompanies public and private heritage owners from initial site survey through construction oversight, producing detailed graphic documentation (plans, elevations, sections, 3D models) freely shared via its Ad Libitum open-data platform.

Product overview

ACCA (Atelier de Conservation et de Conception Architecturale) is an architecture firm specializing in heritage conservation and architectural design. The firm offers three main services: Heritage Conservation Services for restoration and conservation of historic buildings (churches, castles, fortified structures), the Ad Libitum Open Data platform providing free access to project documentation including 3D models and graphic documents, and Urban Analysis and Design services for municipal planning and public space projects. The agency operates primarily in southern France regions (Ariège, Aude, Tarn, Haute-Garonne) working on classified and inscribed historic monuments.

Differentiator

Problem solved

Functional benefit

Products and services

• Heritage Conservation Services Architectural heritage conservation and restoration services including preliminary diagnostic studies (études préalables), base missions (mission de base), complete maîtrise d'œuvre, emergency safety stabilization, and AMO (assistance à maîtrise d'ouvrage) for classified and inscribed historic monuments (Monuments Historiques) across southern France. Service is delivered to French municipalities, departmental councils, dioceses, and private property owners.
• Urban Analysis and Design Services Urban studies and analysis services including AVAP (aire de mise en valeur de l'architecture et du patrimoine) studies, public space requalification projects, and municipal center revitalization assistance for French municipalities and public bodies.
• Ad Libitum Open Data Platform Open data platform providing free public access to project documentation including memoranda, graphic documents (plans, elevations, sections), and 3D models of heritage buildings studied by the agency. The repository serves as a professional showcase and public knowledge base covering 60+ heritage projects across religious buildings, fortifications, civil structures, and urban studies in southern France.

Quantifiable outcome

• 60+ heritage projects documented and made publicly accessible via the Ad Libitum platform
• +1 more outcomes

Named customers10 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

Feature2 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Florence Guillot (Historienne – Archéologue)coreStrategic or Co-development PartnerFlorence Guillot is a key long-term research, expertise, and valorization partner for ACCA. She contributes archaeological and historical expertise to numerous projects including Château de La Salvetat-Saint-Gilles, Prieuré de Serrabone diagnostics, and Spoulga d'Alliat documentation. Based at 77 cité Pechine, 09220 Auzat. Website: floguillot.com
• Marie-Élise Gardel (Archéologue – Historienne)coreStrategic or Co-development PartnerMarie-Élise Gardel collaborates with ACCA on archaeological and historical documentation for heritage projects. Based at 31 rue Victor Hugo, 11600 Conques-sur-Orbiel. Works on projects including Église Saint-Martin de Buzet-sur-Tarn, Prieuré de Mirailhes, and multiple churches in the Aude department.
• Le Chantier Lumineux (Emmanuel Garcia, Architecte du Patrimoine)coreStrategic or Co-development PartnerEmmanuel Garcia's Le Chantier Lumineux, based at 7 Rue Alexandre Cabanel, 34000 Montpellier (and 15 Avenue Jean Jaurès, 34490 Causses-et-Veyra), is a recurring mandataire and project partner on heritage conservation projects including Église Notre-Dame des Victoires de Bastia, Tour de la Livinière, and Forteresse royale de Leucate.
• Carmela-Milena Annaloro (Architecte du Patrimoine)minorImplementation/ SI/ Consulting PartnerCarmela-Milena Annaloro, Architecte du Patrimoine based at 129 chemin de la Treille, 83500 La Seyne-sur-Mer, is listed as a project partner. Collaborated as mandataire on Église Saint-Jean de La Valette du Var.
• Carine Merlino (Architecte – Journaliste)minorGTM or Marketing PartnerCarine Merlino provides editorial advice and communication services to ACCA, contributing to the agency's professional presentation and communications strategy.
• Julie BERTAUD (Architecte d'intérieur – Designer)minorImplementation/ SI/ Consulting PartnerJulie BERTAUD provides interior architecture and design services as well as editorial and plan production support to ACCA. Collaborated since 2015.

Scale indicators2 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Atelier Roland Schweitzer: Paris-based heritage architecture firm specializing in restoration of classified historic monuments, including major cathedrals and abbeys. Comparable to ACCA in its exclusive focus on heritage conservation and DSA Chaillot-credentialed leadership, though operating at larger scale and primarily in northern France.
• Christian Bouchaud (Architecte en Chef des Monuments Historiques): French heritage architect specializing in restoration of medieval and classical monuments, with comparable DSA Chaillot credentials. Competes with ACCA for the same pool of public-sector heritage commissions across regional France.
• Pierre-Antoine Gatier (Architecte en Chef des Monuments Historiques): Renowned Architecte en Chef des Monuments Historiques with deep expertise in restoration of French heritage buildings including cathedrals and châteaux. Comparable to ACCA in credentialing and project type, though operating as a sole principal-led practice serving larger institutional briefs.
• François Chatillon (Architecte en Chef des Monuments Historiques): French heritage architect operating as Architecte en Chef des Monuments Historiques on major classified monuments, comparable to ACCA in scope of conservation/restoration work but generally engaged on larger institutional projects.
• Harmonie Architectes: French architecture firm engaged in heritage restoration, rehabilitation and contemporary insertion projects in historic settings. Comparable to ACCA in their methodology bridging conservation and conception, though with broader urban planning focus.
• Architecture & Héritage: French firm dedicated to heritage architecture, restoration and adaptive reuse of historic buildings. Direct overlap with ACCA's value proposition — both target Classé/Inscrit MH projects and serve communes, dioceses, and departmental councils as primary clients.

Regional players

• Atelier 2M / Architecture & Patrimoine Méditerranéen: Heritage architecture practices serving southern France and Mediterranean regions with comparable expertise in restoration of Romanesque, Gothic and Mediterranean vernacular buildings — direct competition for ACCA in its core Occitanie / PACA territory.

Others

• Fondation du Patrimoine: French heritage funding body that channels grants (including Mission Patrimoine Bern) to restoration projects. Not a competitor but a key ecosystem participant that commissions and refers work to firms like ACCA for qualifying heritage properties.

Broad incumbents

• Wilmotte & Associés Architectes: Major French architecture firm with substantial heritage and cultural building portfolio including museums, cultural centers and historic site interventions. Overlaps with ACCA in heritage restoration capability but operates at significantly larger scale and broader project typology.
• Reichen & Robert Architectes: Established French architecture firm with heritage restoration practice alongside contemporary urban and cultural projects. Comparable in delivering both conservation and new design, though with broader architectural portfolio than ACCA's exclusive heritage focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/accarchi

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

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 →

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