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Magny-les-Hameaux cadastre

Yvelines (78)

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Parcels
3,747
Cadastral sections
24
Recorded area (contenance)
1,622.8 ha
Commune code (INSEE)
78356

Sections

Planning

Planning document
Local zoning plan (PLU) (20005878220260219)

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):

This PLU is the commune’s own document; it must be compatible with the territorial coherence scheme (SCoT) covering the area or, failing that, with the higher-level documents. Guide: who decides what in planning

Zoning plan statistics: prescriptions, information areas and easements

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”.

Parcels of the commune concerned, according to the Géoportail de l'Urbanisme:

Social housing quota sector
1,781 parcels
Development guidelines (OAP)
849 parcels
Classified woodland (EBC)
415 parcels
Protected built or landscape heritage
391 parcels
Ecological corridor (green and blue network)
95 parcels
Building placement rules
43 parcels
Other prescription
20 parcels
Remarkable coastal area
11 parcels
Reserved site
6 parcels
Building restricted (environment, risks, public interest)
3 parcels
Protected garden or open land in a built-up area
2 parcels

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”.

Cover more than 90% of the parcels: Other information, Archaeological site, Lead exposure risk area, Airport noise exposure plan and Development tax sector.

Parcels of the commune concerned, according to the Géoportail de l'Urbanisme:

Transport noise sector
616 parcels
Areas and habitats to preserve (wetlands…)
372 parcels
National interest operation (OIN)
106 parcels

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”.

Parcels of the commune concerned, according to the Géoportail de l'Urbanisme:

Listed or classified site
1,943 parcels
Listed monument and its surroundings
640 parcels
Power lines
153 parcels
Saclay plateau protection
37 parcels

Addresses

2,811 addresses on 145 streets, from the Base Adresse Nationale (national address register). Each number links to its parcel when it is known.

See the 2,811 addresses

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.

Seismic zone
Zone 1 (very low)
Radon potential
Category 1 (low)
Clay shrink-swell
21% of the parcels' area with high exposure, 78% medium
Risk prevention plan
Natural or mining risk plan (PM1): 457 parcels within a perimeter recorded in the Géoportail de l'Urbanisme

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

Property prices

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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)