Why does Trignac 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 Trignac (44570)

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

Identified commercial brownfields

4 brownfields · 198 417 m² (land area)

See the brownfield sites

Site	Status	Area
Crassier des forges de Trignac	friche avec projet	189 333 m²
LECLERC ETS, Maçonnerie	friche potentielle	3 657 m²
Appel à projet Recyclage Foncier 2021 (Dossier N° 3772682) - Pays de la Loire - 44 - Loire-Atlantique - Trignac	friche avec projet	4 181 m²
Ancien pole médical du centre-ville de Trignac	friche avec projet	1 246 m²

Building permits (24 months)

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

See the permits

Date	Activity	Area
2025-02	Administration publique (84.11Z)	1 200 m²
2021-09		2 376 m²
2017-03	Activités immobilières (68.10Z)	21 593 m²
2015-08	Construction de bâtiments (41.10A)	33 918 m²
2015-08	Construction de bâtiments (41.10A)	0 m²

DVF transactions (5 years)

821 commercial property mutations

See breakdown by year

Type	Year	Transactions	Price/m²
Appartement	2025	47	8 226 €
Commerce	2025	17	2 255 €
Maison	2025	103	2 534 €
Appartement	2024	37	4 899 €
Commerce	2024	41	2 779 €
Maison	2024	85	2 518 €
Appartement	2023	25	3 565 €
Commerce	2023	12	2 698 €
Maison	2023	102	2 614 €
Appartement	2022	35	2 840 €
Commerce	2022	19	2 556 €
Maison	2022	107	2 362 €

Price per m² (DVF)

€1 798/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 Trignac

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 Trignac 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.