All architects in Janzé
6 active architecture establishments in Janzé (Ille-et-Vilaine, 35), according to INSEE's Sirene register (data of 26 October 2026).
- Practices
- 6
- Per 10,000 residents
- 6.9
- Companies
- 3
- Founded since 2025
- 2
Janzé (population 8,649) has 6 architecture practices: 6.9 per 10,000 residents, against 6.3 on average in the department (Ille-et-Vilaine). 3 are companies and 3 are architects working as sole practitioners. The oldest company still active, Maisons Cadieu, was founded in 2004. 2 were founded in 2025 or later.
Planning rules in Janzé: see the local plan (PLU) on the Géoportail de l'urbanisme ↗
6 results
| Firm | Town | Phone | Founded | Type |
|---|---|---|---|---|
| Antoine Dhuit (Huit au Carre) | Janze 29 Boulevard Cahours, 35150 | 2025 | Sole trader | |
| Baptiste Boreaniz (Boreaniz) (Arkeo Concept) | Janze 2 Place de la Republique, 35150 | 2025 | Sole trader | |
| JD Architecture | Janze 14 Rue Nantaise, 35150 | 2011 | SARL | |
| Maisons Cadieu | Janze 7 Rue Saint-Pierre, 35150 | 2004 | SARL | |
| Mikael Gobin | Janze 4 Rue Jean Mermoz, 35150 | 2017 | Sole trader | |
| SARL Dom'Elec | Janze 15 Rue de Bel-Air, 35150 | 2004 | SARL |
Architects near Janzé
All architects – Ille-et-Vilaine (35) →Architects in Janzé: common questions
How many architects are there in Janzé?
The Sirene register lists 6 active architecture practices in Janzé: 3 companies and 3 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 Janzé?
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 Janzé (height, position, appearance) are set out in the local plan (PLU).
How much does an architect cost in Janzé?
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.