Parcel 44158 000 AK 434

Cadastral parcel of 10 m² (recorded area), in Saint-Étienne-de-Montluc. Planning document zoning: urban zone (Ub).

Recorded area: 10 m²
Planning zone: UbUrban zone (U)

The parcel (in colour) and its neighbours, from the cadastre; computed perimeter: 22 m. North is up; the bar gives the scale.

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: 11 m²from the cadastral plan
Perimeter: 22 mcomputed from the cadastral plan
Addresses: None linked
Clay soils: Not recorded
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 Ub: 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
5 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
Seismic zone 3 (moderate): a new house must follow the earthquake-resistant building rules. Guide: Identify the scope of each finding
Radon potential category 3: it appears in the information given to buyers and tenants; ventilating and, during works, sealing between the ground and the building reduce exposure. Guide: Prepare the formal risk statement
The computed area (11 m²) differs by 12% from the recorded area (10 m²): for a decision on the size or a boundary, only a chartered surveyor (géomètre-expert) is authoritative. Guide: Read a difference without choosing a figure arbitrarily

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

Planning zoning

Ub – Urban zone (U)

Urban zone family. This category does not establish permission to build: check the local code, applicable rules and parcel constraints.

100% of the parcel
Document: 200072734_PLUI_20251218

Addresses

No address from the Base Adresse Nationale is linked to this parcel.

All addresses in Saint-Étienne-de-Montluc

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”.

Height: Hauteur - He=7,50m – 100% of the parcel
Biotope (green space) ratio: Coefficient de surface perméable - Zone 3.2 – 100% of the parcel
Parking: Stationnement - secteur 3 – 100% of the parcel

See the document on the Géoportail de l'Urbanisme

Local plan information

Urban pre-emption right: Périmètre de droit de préemption urbain – 100% of the parcel
Sanitation zoning: Zone d'assainissement collectif – 100% of the parcel

See the document on the Géoportail de l'Urbanisme

Public-utility easements

Not recorded in the Géoportail de l'Urbanisme

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: Not recorded
Risk prevention plan: Not recorded in the Géoportail de l'Urbanisme
Seismic zone: Zone 3 (moderate)
Radon potential: Category 3 (significant)

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

The parcel in its section

By recorded area, larger than 3% of the 222 parcels of section AK whose area is recorded.
Median recorded area in the section: 637 m².
89 of the section’s 222 parcels have a linked building, 96 an address.
Saint-Étienne-de-Montluc has 10,922 parcels; this one holds less than 0.01% of their total recorded area.

Details

Cadastral reference: 44158 000 AK 434 (44158000AK0434)
Commune: Saint-Étienne-de-Montluc (44158)
Prefix: 000
Section: AK
Number: 434
Recorded area (contenance): 10 m² Contenance arpentée (measured on site).
Computed area: 11 m² Computed from the plan, may differ from the recorded area.

Planning in this commune

Planning document: Intermunicipal zoning plan (PLUi) (200072734_PLUI_20251218)

Find the applicable document on the official GPU map

Document identified in the data, without assurance that it covers the whole commune or every parcel. Several documents may apply. Check coverage and the current version with the town hall or GPU. 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”.

Planning zones (share of parcel area):

Natural and forest zone (N) (49%)
Agricultural zone (A) (43%)
Urban zone (U) (8%)
Development zone (AUc) (0%)
Closed development zone (AUs) (0%)

Source datasets used on this page: 6. 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.
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.