29 Av C Henri de Cosse Brissac, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
4 buildings with 2 recorded homes, built 1900 or earlier, on a parcel of 1,101 m² (recorded area). Local plan (PLU) zoning: urban zone (Ua_p).
- Recorded area
- 1,101 m²
- PLU zone
- Ua_pUrban zone (U)
Address from France’s national address register (BAN), associated with this parcel for information only. Addresses and how they are linked
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)
At a glance
- Computed area
- 1,097 m²from the cadastral plan
- Perimeter
- 133 mcomputed from the cadastral plan
- Buildings
- 4 buildingsOutbuilding
- Built
- 1900 or earlier
- Height to the eaves
- up to 5.6 m
- Dwellings
- 2
- Addresses
- 2 linked addresses
- Clay soils
- Medium exposure (100% of the parcel)
- Risk prevention plans
- Not recorded
This parcel’s figures, from the cadastre, the national address base (BAN), IGN’s BD TOPO and the risk databases. Missing data is not shown.
What this means for a project
- Zone Ua_p: before an extension, a shed or a division, read this zone’s rules (height, footprint, setbacks from the street and the boundaries). Guide: Turn the map finding into a specific question
- 7 prescriptions, information areas or easements touch the parcel (details below): they apply on top of the zone’s rules. Guide: Read the documents, not just the colour
- Clay soils: Medium exposure (100% of the parcel). With medium or high exposure, selling a building plot requires a preliminary soil survey, and a new house must follow adapted building rules. Guide: Prepare the formal risk statement
Points drawn from this parcel’s data. They tell you which questions to ask; they do not replace a certificat d’urbanisme or the official statement of risks.
Understanding the map information
- French planning: who decides what
- The public data behind the map
- Reading and finding a cadastral reference
- Cadastre and boundary surveys: where does the land end?
- Reading a PLU: a zone label does not define a project
- Recorded and calculated parcel area: why two figures?
- Addresses and parcels: why they do not always match
- Parcel owners: what the map does not show and where to ask
- Dividing a plot: preparing a land division
- Property risks: from a map finding to a proper check
PLU zoning
Ua_p – 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.
- 29 Av C Henri de Cosse Brissac, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
- 29 bis Av C Henri de Cosse Brissac, 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”.
- Development guidelines (OAP)
- Périmètre soumis à Orientation d'Aménagement et de Programmation patrimoniale au titre de l'article L.151-6 du code de l'urbani… – 100% of the parcel
See the document on the Géoportail de l'Urbanisme
Local plan information
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”.
- 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
- Other information
- Risque de remontée de nappes – 71% of the parcel
See the document on the Géoportail de l'Urbanisme
Public-utility easements
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”.
- Listed monument and its surroundings
- Château [Saint-Mars-la-Jaille] – 100% of the parcel
- Listed monument and its surroundings
- Piscine municipale – 100% of the parcel
See the document on 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
- 4 buildings
- Use
- Outbuilding
- Height to the eaves
- up to 5.6 m
- Storeys
- up to 1 (ground floor included)
- Dwellings
- 2
- Built
- 1900 or earlier
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 (100% 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 GéorisquesRisks near an address (Géorisques)
The parcel in its section
- By recorded area, larger than 90% of the 259 parcels of section AB whose area is recorded.
- Median recorded area in the section: 372 m².
- 161 of the section’s 259 parcels have a linked building, 168 an address.
- Vallons-de-l'Erdre has 20,795 parcels; this one holds less than 0.01% of their total recorded area.
Details
- Cadastral reference
- 44180 000 AB 282 (44180000AB0282)
- Commune
- Vallons-de-l'Erdre (44180)
- Prefix
- 000
- Section
- AB
- Number
- 282
- Recorded area (contenance)
- 1,101 m²
- Computed area
- 1,097 m² 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 2.0Cadastre 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 2.0The 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 2.0The 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 2.0BAN 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 2.0The 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 1.0This 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 1.0Radon 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 2.0BD TOPO is IGN’s vector topographic reference dataset. Its building component describes footprints and available attributes such as use, height and selected construction information.
Neighbouring parcels
- 44180 000 AB 74 – 31 Av C Henri de Cosse Brissac, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
- 44180 000 AB 75
- 44180 000 AB 84 – 27 Av C Henri de Cosse Brissac, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
- 44180 000 AB 281 – 13 Boulevard Alsace Lorraine, Saint-Mars-la-Jaille, 44540 Vallons-de-l'Erdre
- 44180 000 AB 283
Previous parcel: 44180 000 AB 281 – 13 Boulevard Alsace Lorraine, Saint-Mars-la-Jaille, 44540 Vallons-de-l'ErdreNext parcel: 44180 000 AB 283