All architects in Le Chesnay-Rocquencourt
26 active architecture establishments in Le Chesnay-Rocquencourt (Yvelines, 78), according to INSEE's Sirene register (data of 26 October 2026).
- Practices
- 26
- Per 10,000 residents
- 8.5
- Companies
- 8
- Founded since 2025
- 1
Le Chesnay-Rocquencourt (population 30,689) has 26 architecture practices: 8.5 per 10,000 residents, against 5.2 on average in the department (Yvelines). 8 are companies and 18 are architects working as sole practitioners. The oldest company still active, SAS Francois Croue - David Landaz, was founded in 2000. One was founded in 2025 or later.
26 results
| Firm | Town | Phone | Founded | Type |
|---|---|---|---|---|
| Ana-Maria Grosu | Le Chesnay-Rocquencourt 6 Square Rivoli Res Louvre, 78150 | 2025 | Sole trader | |
| Anne-Charlotte Petit | Le Chesnay-Rocquencourt Maison N5 / SARL les Soeurs Petit 140 Rue de Versailles, 78150 | 2017 | Sole trader | |
| Armel Joly Architecte | Le Chesnay-Rocquencourt 44 T BD ST Antoine, 78150 | 2017 | SARL | |
| Atelier JP Mallet Architecture | Le Chesnay-Rocquencourt 2 All Murat, 78150 | 2012 | SAS | |
| Beata Daniel Interior Design | Le Chesnay-Rocquencourt 6 SQ Raynouard, 78150 | 2019 | SAS | |
| Brigittte Cruette | Le Chesnay-Rocquencourt 5 SQ des Feuillants, 78150 | 1996 | Sole trader | |
| Cbis Architectes | Le Chesnay-Rocquencourt 1 Rue de Conde, 78150 | 2021 | SARL | |
| Eric Chameau | Le Chesnay-Rocquencourt Parc de Rocquencourt 5 Av des Chenes, 78150 | 1987 | Sole trader | |
| Esprit Gaia | Le Chesnay-Rocquencourt 7 Rue de la Pepiniere, 78150 | 2021 | SAS | |
| Fabienne Baudin | Le Chesnay-Rocquencourt 2 Rue de la Sabretache, 78150 | 1999 | Sole trader | |
| Henri Bidot | Le Chesnay-Rocquencourt 14 B Rue de la Bourboule, 78150 | 1994 | Sole trader | |
| Henri Mercier de Lepinay | Le Chesnay-Rocquencourt 7 Rue Pierre Chaulin, 78150 | 1979 | Sole trader | |
| Holding Henri Bidot | Le Chesnay-Rocquencourt 14 B Rue de la Bourboule, 78150 | 2022 | SARL | |
| Hortense Petit | Le Chesnay-Rocquencourt SARL les Soeurs Petit Maison N5 140 Rue de Versailles, 78150 | 2014 | Sole trader | |
| Jeanne le Forestier (Morel) | Le Chesnay-Rocquencourt 22 Rue du Plateau ST Antoine, 78150 | 2007 | Sole trader | |
| Judith Saigot | Le Chesnay-Rocquencourt 28 B Rue Corneille, 78150 | 2024 | Sole trader | |
| KVX Architecture | Le Chesnay-Rocquencourt 2 Rue de la Sabretache, 78150 | 2018 | SAS | |
| Laure Duroy de Suduiraut (Vidart) | Le Chesnay-Rocquencourt Res ST Michel 9 SQ du Dragon, 78150 | 1988 | Sole trader | |
| Mathilde Lasserre | Le Chesnay-Rocquencourt 63 Rte de Rueil, 78150 | 2019 | Sole trader | |
| Michele Dumas | Le Chesnay-Rocquencourt Residence Tuileries 4 SQ d Arcole, 78150 | 2011 | Sole trader | |
| Patrick Hatem | Le Chesnay-Rocquencourt 7 Rue de la Ferme, 78150 | 2005 | Sole trader | |
| Pierre Legoux | Le Chesnay-Rocquencourt 35 Rte de Rueil, 78150 | 1983 | Sole trader | |
| Romain Blanchet (Romain'S) | Le Chesnay-Rocquencourt 9 SQ du Dragon, 78150 | 2024 | Sole trader | |
| SAS Francois Croue - David Landaz | Le Chesnay-Rocquencourt 11 B Rue Ernest Psichari, 78150 | 2000 | SAS | |
| Tarek Sabry | Le Chesnay-Rocquencourt 40 BD ST Antoine, 78150 | 1987 | Sole trader | |
| Thomas Claude Marie Dary | Le Chesnay-Rocquencourt 5 Rue ST Joseph, 78150 | 2008 | Sole trader |
Architects near Le Chesnay-Rocquencourt
All architects – Yvelines (78) →Architects in Le Chesnay-Rocquencourt: common questions
How many architects are there in Le Chesnay-Rocquencourt?
The Sirene register lists 26 active architecture practices in Le Chesnay-Rocquencourt: 8 companies and 18 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 Le Chesnay-Rocquencourt?
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 Le Chesnay-Rocquencourt (height, position, appearance) are set out in the local plan (PLU).
How much does an architect cost in Le Chesnay-Rocquencourt?
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.