Why does Marennes-Hiers-Brouage 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 Marennes-Hiers-Brouage (17320)

Cartofriches brownfields, Sit@del building permits, DVF commercial property transactions in Marennes-Hiers-Brouage. Public data aggregated to assess a location before field visits.

Identified commercial brownfields

2 brownfields · 108 584 m² (land area)

See the brownfield sites

Site	Status	Area
Petit Port des Seynes	friche potentielle	88 609 m²
Appel à projet Fonds Vert 2023 -Petit Port des Seynes (PPS)	friche avec projet	19 975 m²

Building permits (24 months)

10 non-residential permits granted · top sector: Activités immobilières (68.20B)

See the permits

Date	Activity	Area
2026-02	Administration publique (84.12Z)	0 m²
2026-01		0 m²
2025-12	Activités immobilières (68.20B)	3 733 m²
2025-10	Activités associatives (94.99Z)	0 m²
2025-10		6 854 m²
2024-11		1 954 m²
2024-08		1 903 m²
2024-08	Pêche, aquaculture (03.21Z)	155 m²

DVF transactions (5 years)

791 commercial property mutations

See breakdown by year

Type	Year	Transactions	Price/m²
Appartement	2025	16	2 880 €
Commerce	2025	9	3 651 €
Maison	2025	127	2 556 €
Appartement	2024	6	2 575 €
Commerce	2024	16	14 731 €
Maison	2024	103	2 483 €
Appartement	2023	41	6 688 €
Commerce	2023	17	2 874 €
Maison	2023	102	2 648 €
Appartement	2022	20	2 774 €
Commerce	2022	11	4 001 €
Maison	2022	127	2 769 €

Price per m² (DVF)

€2 373/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 Marennes-Hiers-Brouage

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.

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FAQ

Why does Marennes-Hiers-Brouage 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.