Parcel 78402 000 B 319
Cadastral parcel of 547 m² (recorded area), in Mézières-sur-Seine. Planning document zoning: agricultural zone (AP).
- Recorded area
- 547 m²
- Planning zone
- APAgricultural zone (A)
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
- 594 m²from the cadastral plan
- Perimeter
- 242 mcomputed from the cadastral plan
- Addresses
- None linked
- Clay soils
- Not recorded
- Risk prevention plans
- 1 plan 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 AP: apart from farm buildings, usually only a measured extension and outbuildings of an existing home are allowed, and only where the rules provide for them. Guide: Turn the map finding into a specific question
- 3 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
- PPRI de la vallée de la Seine et de l'Oise dans le département des Yvelines covers 70% of the parcel: its rules may forbid or restrict building; read them before any project. Guide: Identify the scope of each finding
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
Planning zoning
AP – Agricultural zone (A)
Protected farmland: building is strictly limited.
100% of the parcel
Document: 200059889_PLUI_20260205
Addresses
No address from the Base Adresse Nationale is linked to this parcel.
All addresses in Mézières-sur-Seine
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)
- OAP EM 5 - Le quartier gare d Epone - Mezieres – 100% of the parcel
- Development guidelines (OAP)
- OAP EM 6 - La confluence Seine-Mauldre – 100% of the parcel
- Reserved site for a public road
- Liaison routière F13 A13 Cergy – 16% 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”.
Not recorded in 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”.
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
- Natural or mining risk plan (PM1) – PPRI de la vallée de la Seine et de l'Oise dans le département des Yvelines – 70% of the parcel
- Seismic zone
- Zone 1 (very low)
- Radon potential
- Category 1 (low)
Produce the risk statement (ERRIAL) on GéorisquesRisks near an address (Géorisques)
The parcel in its section
- By recorded area, larger than 42% of the 292 parcels of section B whose area is recorded.
- Median recorded area in the section: 901 m².
- 1 of the section’s 292 parcels have a linked building, 0 an address.
- Mézières-sur-Seine has 6,872 parcels; this one holds less than 0.01% of their total recorded area.
Details
- Cadastral reference
- 78402 000 B 319 (784020000B0319)
- Commune
- Mézières-sur-Seine (78402)
- Prefix
- 000
- Section
- B
- Number
- 319
- Recorded area (contenance)
- 547 m²
- Computed area
- 594 m² Computed from the plan, may differ from the recorded area.
Planning in this commune
- Planning document
- Intermunicipal zoning plan (PLUi) (200059889_PLUi_20260205)
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):
- Agricultural zone (A) (46%)
- Natural and forest zone (N) (42%)
- Urban zone (U) (12%)
- Development zone (AUc) (1%)
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 2.0Cadastre 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.
- 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.
Neighbouring parcels
Previous parcel: 78402 000 B 318Next parcel: 78402 000 B 320