All architects in Saint-Germain-en-Laye
33 active architecture establishments in Saint-Germain-en-Laye (Yvelines, 78), according to INSEE's Sirene register (data of 26 October 2026).
- Practices
- 33
- Per 10,000 residents
- 7.2
- Companies
- 18
- Founded since 2025
- 3
Saint-Germain-en-Laye (population 45,931) has 33 architecture practices: 7.2 per 10,000 residents, against 5.2 on average in the department (Yvelines). 18 are companies and 15 are architects working as sole practitioners. The oldest company still active, Diedre Design (Diedre), was founded in 1982. 3 were founded in 2025 or later.
Planning rules in Saint-Germain-en-Laye: see the local plan (PLU) on the Géoportail de l'urbanisme ↗
33 results
| Firm | Town | Phone | Founded | Type |
|---|---|---|---|---|
| Akitek | Saint-Germain-en-Laye 36 Rue de la Grande Fontaine, 78100 | 2011 | SARL | |
| Alberola Architecture | Saint-Germain-en-Laye 3 Rue au Pain, 78100 | 2005 | SARL | |
| Ali Hanni (Atelier Hanni Architecture Aha !) | Saint-Germain-en-Laye 10 Rue Wauthier, 78100 | 2022 | Sole trader | |
| All & B. | Saint-Germain-en-Laye 11 Rue Mal Gallieni, 78100 | 2010 | SAS | |
| Alph Architectes et Associestrading as Tripode Architecture | Saint-Germain-en-Laye 16 Rue du Gast, 78100 | 2023 | SAS | |
| Antoine Durand (Adarchi) | Saint-Germain-en-Laye 15 Av du Professeur Roux, 78100 | 1986 | Sole trader | |
| Artcrafters | Saint-Germain-en-Laye 27 Avenue de la Ferme des Hezards, 78112 | 2024 | SAS | |
| Atelier d'Architecture L3G | Saint-Germain-en-Laye 15 Rue du Mal Joffre, 78100 | 1996 | SARL | |
| Atelier Herbez | Saint-Germain-en-Laye 3 Avenue du Professeur Roux, 78100 | 2024 | SELAS | |
| Carlos Salguero | Saint-Germain-en-Laye 103 Rue du Pontel, 78100 | 2006 | Sole trader | |
| Charles Ozouf | Saint-Germain-en-Laye 7 Rue de l'Aigle d'Or, 78100 | 2025 | SAS | |
| Diedre Design (Diedre) | Saint-Germain-en-Laye 28 Rue Mal Gallieni, 78100 | 1982 | SAS | |
| Eole Concept | Saint-Germain-en-Laye 145 Rue du PDT Roosevelt, 78100 | 2007 | SAS | |
| Eudes Bergoin | Saint-Germain-en-Laye 9 Rue de la Liberte, 78100 | 2016 | Sole trader | |
| Fabrice Pitard | Saint-Germain-en-Laye SELARL Fabrice Pitard 5 Rue Boucher de Perthes, 78100 | 1996 | Sole trader | |
| Frederic Depigny | Saint-Germain-en-Laye 2 Rue Cuvier, 78100 | 1984 | Sole trader | |
| Hugues Frederic Saint-Salvi (Frederic) | Saint-Germain-en-Laye 5 Dom de la Foret, 78100 | 2013 | Sole trader | |
| Id Christophe Daudre | Saint-Germain-en-Laye 39 Rue de Poissy, 78100 | 2013 | SARL | |
| L&B Architectures | Saint-Germain-en-Laye 7 Rue Ducastel, 78100 | 2018 | SAS | |
| Land Art Concept | Saint-Germain-en-Laye 30 B Rue du Vieil Abreuvoir, 78100 | 2022 | SARL | |
| Marike Thery | Saint-Germain-en-Laye 106 Rue Leon Desoyer, 78100 | 2016 | Sole trader | |
| Marta Pusterle de Cidrac (Saada)trading as Architecte | Saint-Germain-en-Laye 2 Rue Franklin, 78100 | 1997 | Sole trader | |
| Neil Hutchinson | Saint-Germain-en-Laye 37 Rue de Saint Nom, 78100 | 1993 | Sole trader | |
| Norihisa Goto | Saint-Germain-en-Laye 17 B Rue Roger Robereau, 78100 | 2007 | Sole trader | |
| Olivier Herbez | Saint-Germain-en-Laye 3 Av du Professeur Roux, 78100 | 2001 | Sole trader | |
| Oussema Aissa | Saint-Germain-en-Laye Batiment A Escalier 1 60 Rue Saint Leger, 78100 | 2024 | Sole trader | |
| Quentin Lefevre | Saint-Germain-en-Laye 23 Rue du Pontel, 78100 | 2008 | Sole trader | |
| Sebastien Chabbert Architecte (Sebastien Chabbert Architecte) (Sca) | Saint-Germain-en-Laye 99 Rue Pereire, 78100 | 2025 | SAS | |
| SNC Normandie Narval | Saint-Germain-en-Laye 10 Rue des Gaudines, 78100 | 1994 | SNC | |
| Societe d'Architecture Trio Ingenierie | Saint-Germain-en-Laye 3 PL Christiane Frahier, 78100 | 1998 | SELARL | |
| Thierry Gros de Beler | Saint-Germain-en-Laye 103 Rue du Pontel, 78100 | 1989 | Sole trader | |
| Typhaine Blanchet Architectures (TB Architectures) (Tba) | Saint-Germain-en-Laye 10 Rue de Poissy, 78100 | 2026 | SAS | |
| Xavier Lauzeral Architecte Urbaniste | Saint-Germain-en-Laye 10 Rue des Coches, 78100 | 2010 | SARL |
Architects near Saint-Germain-en-Laye
All architects – Yvelines (78) →Architects in Saint-Germain-en-Laye: common questions
How many architects are there in Saint-Germain-en-Laye?
The Sirene register lists 33 active architecture practices in Saint-Germain-en-Laye: 18 companies and 15 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-Germain-en-Laye?
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-Germain-en-Laye (height, position, appearance) are set out in the local plan (PLU).
How much does an architect cost in Saint-Germain-en-Laye?
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.