1 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre

Parcel of 1.9 ha (recorded area) with 5 buildings. Local plan (PLU) zoning: urban zone (Ub).

Recorded area: 1.9 ha
PLU zone: UbUrban zone (U)

Address from France’s national address register (BAN), associated with this parcel for information only. Addresses and how they are linked

The parcel (coloured) and its neighbours, from the cadastre.

The cadastre is a tax record: it does not prove ownership. Why?

The cadastre is a tax record: it does not prove ownership and its boundaries have no legal force (only a surveyor's boundary marking does). Its plan is approximate: especially where it is old, it can be offset by a few metres from the buildings and the aerial imagery. The owner's name is not shown. Boundary marking (Service Public, in French)

Understanding the map information

PLU zoning

Ub – Urban zone (U)

Built-up or serviced area. Building is generally allowed, under the PLU rules.

100% of the parcel
Document: 44180_PLU_20230710

Addresses

Source: Base Adresse Nationale (national address register). “Linked by its position”: the address point lies inside the parcel. “Linked by its building (RNB)”: the building that carries the address in the national building register (Référentiel National des Bâtiments) stands on the parcel. “Linked by IGN (BAN PLUS)”: IGN matches the address to this parcel, the nearest one on the same side of the street, and the address point lies inside it. In these cases the Base Adresse Nationale declares no link.

1 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
2 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
3 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
4 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
5 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
6 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
7 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
8 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
9 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
10 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
11 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
12 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
13 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
14 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
15 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
16 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
17 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
18 Impasse des Coquelicots, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre

All addresses in Vallons-de-l'Erdre

Local plan prescriptions

For guidance only, from the Géoportail de l'Urbanisme extraction of 15 August 2026; the linked document may have been replaced since. Only the planning document's regulations and annexes are binding. A missing item means “not recorded”, not “no constraint”.

Not recorded in the Géoportail de l'Urbanisme

Local plan information

Urban pre-emption right: Périmètre de droit de préemption urbain – 100% of the parcel
Sanitation zoning: Zonage d'assainissement collectif – 100% of the parcel
Other information: Retrait-gonflements des sols argileux – 100% of the parcel

See the document on the Géoportail de l'Urbanisme

Public-utility easements

Not recorded in the Géoportail de l'Urbanisme

Buildings

Indicative data (IGN BD TOPO): buildings IGN links to the parcel (BAN PLUS) when they cover at least 20 m² of it, with information from the tax files (DGFiP), anonymised. An unknown height or number is not shown. Construction years are grouped into periods, because old buildings often carry an estimated round year (1800, 1900…). A building standing on several parcels is counted on each, with all its dwellings. Recent buildings may be missing: the tax files are updated with a delay.

On the parcel: 5 buildings
Height to the eaves: up to 5 m

Risks

This information is for guidance only and has no regulatory force: it does not replace the risk statement (état des risques, ERRIAL) to be attached to a sale or a rental, which anyone can produce free of charge on Géorisques.

Some clay soils swell when wet and shrink as they dry, which can crack buildings. The higher the exposure, the more building precautions are needed. A risk prevention plan (PPR) maps the areas exposed to a hazard (flooding, ground movement, an industrial site…) and sets building rules there. The Géoportail de l'Urbanisme does not list every plan yet.

Clay shrink-swell: Medium exposure (98% of the parcel)
Risk prevention plan: Not recorded in the Géoportail de l'Urbanisme
Seismic zone: Zone 2 (low)
Radon potential: Category 2 (low, with geological factors that can ease the transfer of radon)

Produce the risk statement (ERRIAL) on Géorisques Risks near an address (Géorisques)

Details

Cadastral reference: 44180 000 AA 102 (44180000AA0102)
Commune: Vallons-de-l'Erdre (44180)
Prefix: 000
Section: AA
Number: 102
Recorded area (contenance): 1.9 ha
Computed area: 1.9 ha Computed from the plan, may differ from the recorded area.

Planning in this commune

Planning document: Local zoning plan (PLU) (44180_PLU_20230710)

PLU zones (share of parcel area):

Agricultural zone (A) (48%)
Natural and forest zone (N) (16%)
Urban zone (U) (1%)
Development zone (AUc) (0%)
Closed development zone (AUs) (0%)

Source datasets used on this page: 8. Their dates and reuse terms can differ.

Sources and versions used on this page

Plan cadastral informatisé (Etalab) 2026-06-01 — Licence Ouverte / Open Licence 2.0
Cadastre Etalab redistributes the French digital cadastral plan in simplified geographic formats, including parcels, sections and buildings. Mapped boundaries do not replace a boundary survey.
Géoportail de l’Urbanisme — extraction nationale 2026-08-15 — Licence Ouverte / Open Licence 2.0
The national Urban Planning Geoportal extraction brings together layers published by the GPU from documents supplied by municipalities, intermunicipal authorities and state services. The competent authorities remain responsible for the documents and their regulatory meaning.
Base Adresse Nationale (listes d’adresses et géocodage Géoplateforme) 2026-10-07 — Licence Ouverte / Open Licence 2.0
The Base Adresse Nationale brings together French addresses, including those published by municipalities. Address coordinates alone do not establish an administrative link to a cadastral parcel.
BAN PLUS (rattachement géométrique adresse → parcelle) 2026-06-15 — Licence Ouverte / Open Licence 2.0
BAN PLUS is IGN’s product linking Base Adresse Nationale addresses to reference geographic objects, including cadastral parcels, using geometric matching.
Exposition au retrait-gonflement des argiles 2026-07-02 — Licence Ouverte / Open Licence 2.0
The clay shrink-swell exposure map describes geological exposure at the map’s scale. It does not replace a site-specific geotechnical investigation.
Zonage sismique de la France (décret n° 2010-1255), liste version janvier 2015 2018-07-30 — Licence Ouverte / Open Licence 1.0
This vector layer published by wpd is based on the BRGM / planseisme.fr list of municipalities and seismic zones, January 2015 version. Municipal zoning does not measure the structural risk of an individual building.
Potentiel radon des communes (arrêté du 27 juin 2018) 2019-05-06 — Licence Ouverte / Open Licence 1.0
Radon potential zoning classifies municipalities according to their geological potential to emit radon. It does not measure the indoor radon concentration of an individual building.
BD TOPO® – bâtiments (usage, hauteur, niveaux, logements, année de construction) 2026-06-15 — Licence Ouverte / Open Licence 2.0
BD TOPO is IGN’s vector topographic reference dataset. Its building component describes footprints and available attributes such as use, height and selected construction information.