All architects in Ermont
11 active architecture establishments in Ermont (Val-d'Oise, 95), according to INSEE's Sirene register (data of 26 October 2026).
- Practices
- 11
- Per 10,000 residents
- 3.7
- Companies
- 4
- Founded since 2025
- 1
Ermont (population 29,489) has 11 architecture practices: 3.7 per 10,000 residents, against 2.4 on average in the department (Val-d'Oise). 4 are companies and 7 are architects working as sole practitioners. One employs 10 people or more. The oldest company still active, Bellier-Sesboue, was founded in 1979. One was founded in 2025 or later.
Planning rules in Ermont: see the local plan (PLU) on the Géoportail de l'urbanisme ↗
11 results
| Firm | Town | Phone | Founded | Type |
|---|---|---|---|---|
| Abdelilah Maaroufi | Ermont 163 Rue de la Gare, 95120 | 2004 | Sole trader | |
| Alicia Artal (Alicia Artal Architecte DPLG) | Ermont 20 Rue de la Republique, 95120 | 2007 | Sole trader | |
| Antoine Guichard | Ermont 5 Avenue de l'Esperance, 95120 | 2026 | Sole trader | |
| Atheg Ingenierie (Artheg Ingenierie) | Ermont 11 Place de la Grande Tour, 95120 | 2004 | SARL | |
| Basalt Architecture | Ermont 70 rue de la Gare, 95120 Ermont | +33 1 30 10 59 59 | 2001 | SAS |
| Bellier-Sesboue | Ermont 320 Boulevard de Cernay, 95120 | 1979 | ||
| Eunsook Lam Woon Sin (Bae) (Archi/Bae) | Ermont 40 B Rue de la Republique, 95120 | 2023 | Sole trader | |
| Jean-Luc Claquin | Ermont 31 Rue de la Republique, 95120 | 1982 | Sole trader | |
| Louis Allart | Ermont 60 Rue de Sannois, 95120 | 2017 | Sole trader | |
| Paysage Plus Environnement | Ermont 34 Rue de la Halte, 95120 | 2005 | SARL | |
| Tristan Paillard (Tristan Paillard Architecte DPLG) | Ermont 20 Rue de la Republique, 95120 | 2008 | Sole trader |
Architects near Ermont
All architects – Val-d'Oise (95) →Architects in Ermont: common questions
How many architects are there in Ermont?
The Sirene register lists 11 active architecture practices in Ermont: 4 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 Ermont?
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 Ermont (height, position, appearance) are set out in the local plan (PLU).
How much does an architect cost in Ermont?
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.