All architects in Mont-Saint-Aignan
36 active architecture establishments in Mont-Saint-Aignan (Seine-Maritime, 76), according to INSEE's Sirene register (data of 26 October 2026).
- Practices
- 36
- Per 10,000 residents
- 17.9
- Companies
- 17
- Founded since 2025
- 2
Mont-Saint-Aignan (population 20,165) has 36 architecture practices: 17.9 per 10,000 residents, against 3.8 on average in the department (Seine-Maritime). 17 are companies and 19 are architects working as sole practitioners. One employs 10 people or more. The oldest company still active, Groupe d'Etude de Realisation d'Ingenierie d'Architecture et d'Urbanisme, was founded in 1988. 2 were founded in 2025 or later.
Planning rules in Mont-Saint-Aignan: see the local plan (PLU) on the Géoportail de l'urbanisme ↗
36 results
| Firm | Town | Phone | Founded | Type |
|---|---|---|---|---|
| Alain Robinne | Mont-Saint-Aignan 26 Rue Raymond Aron, 76130 | 1979 | Sole trader | |
| Amaury Toulemonde | Mont-Saint-Aignan 30 Chemin de la Planquette, 76130 | 2014 | Sole trader | |
| Ash Architectes | Mont-Saint-Aignan 90 B Chemin des Cottes, 76130 | 2010 | SELARL | |
| Atelier d Architecture 2S (AA2S) | Mont-Saint-Aignan 5 Rue des Courlis, 76130 | 2010 | SARL | |
| Atelier des Verre et Acier | Mont-Saint-Aignan 15 Parc de la Risle, 76130 | 2004 | SARL | |
| Bloom Design | Mont-Saint-Aignan 3 Rue de la Corderie, 76130 | 2022 | SAS | |
| Celia Mihoubi (Idjerouidene) | Mont-Saint-Aignan 12 Rue de l'Alma, 76130 | 2025 | Sole trader | |
| Collectif Arcade | Mont-Saint-Aignan 31 Rue Henault, 76130 | 2023 | SARL | |
| Etienne Dupre | Mont-Saint-Aignan 4 Rue Edmond Megard, 76130 | Sole trader | ||
| EURL d'Architecture Atelier XVtrading as Architecte D.P.L.G., Atelier XV | Mont-Saint-Aignan 30 Chemin de la Planquette, 76130 | 1999 | SELARL | |
| Fabri Architectes | Mont-Saint-Aignan 30 Chemin de la Planquette, 76130 | 2017 | SARL | |
| Gilles Bachelay | Mont-Saint-Aignan 10 Parc du Cailly, 76130 | 1987 | Sole trader | |
| Gilles Duchesne (Gilles Duchesne Architecte) | Mont-Saint-Aignan 9 Rue Michel, 76130 | 1981 | Sole trader | |
| Groupe d'Etude de Realisation d'Ingenierie d'Architecture et d'Urbanisme | Mont-Saint-Aignan 20 Av Gallieni, 76130 | 1988 | SARL | |
| Groupe James | Mont-Saint-Aignan 3 Rue de la Corderie, 76130 | 2022 | SAS | |
| Helene Samy (Ropers) | Mont-Saint-Aignan 44 Avenue du Mont aux Malades, 76130 | 2007 | Sole trader | |
| Hellys | Mont-Saint-Aignan 44 Avenue du Mont aux Malades, 76130 | 2025 | SAS | |
| Jean Baptiste Ricci | Mont-Saint-Aignan 8 Rue Fremont, 76130 | 2010 | Sole trader | |
| Jean-Michel Liberty | Mont-Saint-Aignan 3 Rue Marcel Dupre, 76130 | 2001 | Sole trader | |
| Jessica Jeanmaire (Bornet) | Mont-Saint-Aignan 2 T Rue Mazurier, 76130 | 2021 | Sole trader | |
| Mancif Guennoun | Mont-Saint-Aignan 32 Rue Jacques Boutrolle, 76130 | 1988 | Sole trader | |
| MC4 | Mont-Saint-Aignan 4 Rue Louise de Bettignies, 76130 | 2022 | SARL | |
| Nathalie Adrian (Halbout) | Mont-Saint-Aignan 4 Rue Lefort Gonssolin, 76130 | 1990 | Sole trader | |
| Nicolas Claudet | Mont-Saint-Aignan SARL Ateliers Verres et Aciers 15 Parc de la Risle, 76130 | 2004 | Sole trader | |
| Patrick Vatre | Mont-Saint-Aignan 85 Chemin de Cleres, 76130 | 1988 | Sole trader | |
| R24 Architectes | Mont-Saint-Aignan 44 Avenue du Mont aux Malades, 76130 | 2009 | SARL | |
| SAS Philippe de Lanouvelle | Mont-Saint-Aignan 4 Place de l'Eglise, 76130 | 2021 | SAS | |
| SAS R&L Architectes Associes | Mont-Saint-Aignan 48 Avenue Gallieni, 76130 | 2022 | SAS | |
| Stef Archicite Patrick Vatre Architecte | Mont-Saint-Aignan 85 Chemin de Cleres, 76130 | 1991 | ||
| Stephane Rousseau | Mont-Saint-Aignan 136 Chemin des Cottes, 76130 | 1984 | Sole trader | |
| Sylvain Samy-Ropers (Samy) | Mont-Saint-Aignan 44 Avenue du Mont aux Malades, 76130 | 2015 | Sole trader | |
| Ulysses | Mont-Saint-Aignan 3 Rue de la Corderie, 76130 | 2009 | SARL | |
| Valerie Demouilliez | Mont-Saint-Aignan Robinne Ropers Gourdin 26 Rue Raymond Aron, 76130 | 2002 | Sole trader | |
| Valerie Dubroeucq | Mont-Saint-Aignan 8 Rue de Crimee, 76130 | 2022 | Sole trader | |
| Virginie Leca Architecte (Virginie Leca Architecte) | Mont-Saint-Aignan 21 Rue Edouard Fortier, 76130 | 2014 | SARL | |
| Yohann Chubert | Mont-Saint-Aignan 27 Rue Georges Clemenceau, 76130 | 2010 | Sole trader |
Architects near Mont-Saint-Aignan
All architects – Seine-Maritime (76) →Architects in Mont-Saint-Aignan: common questions
How many architects are there in Mont-Saint-Aignan?
The Sirene register lists 36 active architecture practices in Mont-Saint-Aignan: 17 companies and 19 architects working as sole practitioners. All of them are listed on this page, with their address and, where published, their phone number.
Is an architect compulsory to build in Mont-Saint-Aignan?
As everywhere in France, an individual building for themselves must use an architect once the floor area exceeds 150 m², counting the total after works for an extension. A company, including an SCI, always needs one for a building permit. The local rules for Mont-Saint-Aignan (height, position, appearance) are set out in the local plan (PLU).
How much does an architect cost in Mont-Saint-Aignan?
Fees are free and set in the contract. For a full mission, from design to site supervision, pricing guides usually quote 8–12% of the cost of the works excluding VAT for a new house and 10–15% for a renovation or extension. A mission limited to the building permit application is usually a fixed fee of about €1,500–4,000 excluding VAT.
Where can I get free advice before choosing an architect?
In most departments, the CAUE (council for architecture, planning and the environment) sees individuals for free, by appointment, to help them prepare their project. The map of CAUEs is on fncaue.com.