All architects in Saint-Sébastien-sur-Loire
16 active architecture establishments in Saint-Sébastien-sur-Loire (Loire-Atlantique, 44), according to INSEE's Sirene register (data of 26 October 2026).
- Practices
- 16
- Per 10,000 residents
- 5.6
- Companies
- 9
- Founded since 2025
- 1
Saint-Sébastien-sur-Loire (population 28,596) has 16 architecture practices: 5.6 per 10,000 residents, against 7.2 on average in the department (Loire-Atlantique). 9 are companies and 7 are architects working as sole practitioners. One employs 10 people or more. The oldest company still active, SELARL Cabinet Michel Lucas, was founded in 1997. One was founded in 2025 or later.
16 results
| Firm | Town | Phone | Founded | Type |
|---|---|---|---|---|
| Archimage et Associes | Saint-Sebastien-sur-Loire 13 Rue Marie Curie, 44230 | 2011 | SARL | |
| Baldisserri Concept et Design | Saint-Sebastien-sur-Loire 9 Rue de la Mutualite, 44230 | 2008 | SARL | |
| Camino Architecture | Saint-Sebastien-sur-Loire 34 Rue des Bois, 44230 | 2025 | SARL | |
| Celie Evanno | Saint-Sebastien-sur-Loire 25 B Rue du Largeau, 44230 | 2018 | Sole trader | |
| Eric Piton | Saint-Sebastien-sur-Loire 21 Avenue de la Martelliere, 44230 | 2010 | Sole trader | |
| Generic Architecture | Saint-Sebastien-sur-Loire 3 Rue de l'Ouche Favier, 44230 | 2011 | SARL | |
| Imagin 3D | Saint-Sebastien-sur-Loire 5 Rue du Clos Toreau, 44230 | 2013 | SARL | |
| Interfaces Architecture | Saint-Sebastien-sur-Loire 405 Route de Clisson, 44230 | 2001 | SARL | |
| Jean-Luc le Mancq | Saint-Sebastien-sur-Loire 11 Rue des Moulins, 44230 | 1985 | Sole trader | |
| Julien Deauverne (Bacane !) | Saint-Sebastien-sur-Loire 26 Rue Aristide Briand, 44230 | 2020 | Sole trader | |
| Patrick Hevin | Saint-Sebastien-sur-Loire 125 B Route de Clisson, 44230 | 1983 | Sole trader | |
| Pierre Dansart Architecte | Saint-Sebastien-sur-Loire 50 Rue de la Baugerie, 44230 | 2021 | SARL | |
| SELARL Cabinet Michel Lucas | Saint-Sebastien-sur-Loire 5 Rue du Clos Toreau, 44230 | 1997 | SAS | |
| Trace | Saint-Sebastien-sur-Loire 13 Rue de la Loire, 44230 | 2011 | SARL | |
| Virginie Francois | Saint-Sebastien-sur-Loire 16 Rue du Bas Poitou, 44230 | 2009 | Sole trader | |
| Yann Leclercq | Saint-Sebastien-sur-Loire 149 Rue de la Liberation, 44230 | 2020 | Sole trader |
Architects near Saint-Sébastien-sur-Loire
All architects – Loire-Atlantique (44) →Architects in Saint-Sébastien-sur-Loire: common questions
How many architects are there in Saint-Sébastien-sur-Loire?
The Sirene register lists 16 active architecture practices in Saint-Sébastien-sur-Loire: 9 companies and 7 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 Saint-Sébastien-sur-Loire?
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 Saint-Sébastien-sur-Loire (height, position, appearance) are set out in the local plan (PLU).
How much does an architect cost in Saint-Sébastien-sur-Loire?
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.