Parcel 91546 000 B 252

Cadastral parcel of 715 m² (recorded area), in Saint-Cyr-sous-Dourdan.

Recorded area: 715 m²
Planning zone: No zone published

The parcel (in colour) and its neighbours, from the cadastre; computed perimeter: 150 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: 723 m²from the cadastral plan
Perimeter: 150 mcomputed from the cadastral plan
Addresses: None linked
Clay soils: High exposure (88% of the parcel), medium (12%)
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

No zone is published for this parcel: ask the town hall for a certificat d’urbanisme before any project. Guide: Use a planning certificate for the next step
1 prescription, information area or easement touches the parcel (details below): it applies on top of the zone’s rules. Guide: Read the documents, not just the colour
Clay soils: High exposure (88% of the parcel), medium (12%). General rule in medium or high exposure areas: the seller of unbuilt buildable land supplies a preliminary geotechnical study where planning rules permit individual houses. Exposure alone does not establish that this sale is covered. Construction projects are subject to separate rules to check with the professional. Géorisques: soil studies and construction

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

No planning document published on the Géoportail de l'Urbanisme.

Addresses

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

All addresses in Saint-Cyr-sous-Dourdan

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”.

National clay exposure (BRGM/Géorisques) and labels in the local planning document are separate sources: dates, methods and purposes may differ. Both values are retained; neither replaces the other. Check the national map and local rules with the authorities. Data versions: national clay layer 2026-07-02; GPU extraction 2026-08-15. Géorisques: soil studies and construction

Not recorded in the Géoportail de l'Urbanisme

Local plan information

Not recorded in the Géoportail de l'Urbanisme

Public-utility easements

Listed or classified site: Vallée de la rémarde – 100% of the parcel

See the document on 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: High exposure (88% of the parcel), medium (12%)
Risk prevention plan: Not recorded in the Géoportail de l'Urbanisme
Seismic zone: Zone 1 (very low)
Radon potential: Category 1 (low)

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

The parcel in its section

By recorded area, larger than 35% of the 762 parcels of section B whose area is recorded.
Median recorded area in the section: 1,075 m².
79 of the section’s 762 parcels have a linked building, 94 an address.
Saint-Cyr-sous-Dourdan has 2,818 parcels; this one holds less than 0.01% of their total recorded area.

Details

Cadastral reference: 91546 000 B 252 (915460000B0252)
Commune: Saint-Cyr-sous-Dourdan (91546)
Prefix: 000
Section: B
Number: 252
Recorded area (contenance): 715 m²
Computed area: 723 m² Computed from the plan, may differ from the recorded area.

Planning in this commune