Why does Saint-Germain-en-Laye appear in Cartofriches?

Cartofriches lists commercial brownfields identified by local authorities, EPF and Cerema. Presence does not mean current vacancy — verify status with the town hall or directly with the owner (public cadaster).

Difference between building permit and commercial planning permission?

Sit@del lists building permits (>=800 m²). Openings 1 000 m²) are not reflected here.

Why does DVF price differ from commercial rent?

DVF = sale price per m² (acquiring walls). Commercial rent = annual rent per m² (landlord income). Price-to-rent ratio varies 12-20× by zone.

Commercial premises and vacancy in Saint-Germain-en-Laye (78100)

Cartofriches brownfields, Sit@del building permits, DVF commercial property transactions in Saint-Germain-en-Laye. Public data aggregated to assess a location before field visits.

Identified commercial brownfields

6 brownfields · 304 220 m² (land area)

See the brownfield sites

Site	Status	Area
Appel à projet Recyclage Foncier 2021 2nde édition (Dossier N° 5147835) - Île-de-France - 78 - Yvelines - Saint-Germain-en-Laye (78100) - friche: Bd de la Paix - Saint Germain en Laye	friche avec projet	2 658 m²
Appel à projet Recyclage Foncier 2021 (Dossier N° 3465875) - Île-de-France - 78 - Yvelines - Saint-Germain-en-Laye	friche avec projet	217 370 m²
Appel à projet Fonds Vert 2023 -Site Ropital	friche avec projet	22 898 m²
78551_35698	friche sans projet	57 574 m²
BABUT PERE ET FILS (S.A.R.L.)	friche potentielle	1 309 m²
COPITHERME (S.A.) - GMS, anc. GENG MAZOUT SERVICE (S.A.), anc. GENG CLAUDE ET CIE (S.A.R.L.)	friche potentielle	2 411 m²

Building permits (24 months)

2 non-residential permits granted · top sector: Administration publique (84.11Z)

See the permits

Date	Activity	Area
2025-08	Administration publique (84.11Z)	815 m²
2025-04		637 m²
2024-02	Administration publique (84.11Z)	7 533 m²
2023-07	Administration publique (84.11Z)	3 209 m²
2023-07	Administration publique (84.11Z)	84 465 m²
2023-06	Activités immobilières (68.10Z)	1 265 m²
2023-06	Administration publique (84.11Z)	0 m²
2022-12		646 m²

DVF transactions (5 years)

3654 commercial property mutations

See breakdown by year

Type	Year	Transactions	Price/m²
Appartement	2025	505	6 903 €
Commerce	2025	61	7 091 €
Maison	2025	102	8 021 €
Appartement	2024	423	6 980 €
Commerce	2024	52	6 707 €
Maison	2024	75	7 989 €
Appartement	2023	471	7 549 €
Commerce	2023	81	7 835 €
Maison	2023	122	8 792 €
Appartement	2022	640	7 797 €
Commerce	2022	100	9 483 €
Maison	2022	134	8 181 €

Price per m² (DVF)

€5 595/m²

How this analysis is computed

Cross-reference of 4 public sources: Cartofriches Cerema, Sit@del (non-residential permits 24m), DVF DGFiP (5-year transactions), SIRENE. No commercial listings included — for listings consult dedicated portals.

Finding a unit in Saint-Germain-en-Laye

This page identifies availability signals (brownfields, permits, mutations). For active listings, see portals like SeLoger Pro / LocalCommercial.net, or contact a notary for off-market transactions.

Commercial-premises support in Saint-Germain-en-Laye?

Commercial-premises support (search, lease, fit-out) isn't open yet. Leave your email and we'll let you know at launch.

FAQ

Why does Saint-Germain-en-Laye appear in Cartofriches?: Cartofriches lists commercial brownfields identified by local authorities, EPF and Cerema. Presence does not mean current vacancy — verify status with the town hall or directly with the owner (public cadaster).
Difference between building permit and commercial planning permission?: Sit@del lists building permits (>=800 m²). Openings <1 000 m² require no separate commercial permission (CDAC). AEC (>1 000 m²) are not reflected here.
Why does DVF price differ from commercial rent?: DVF = sale price per m² (acquiring walls). Commercial rent = annual rent per m² (landlord income). Price-to-rent ratio varies 12-20× by zone.