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31 Rue Claude Masse, 17000 La Rochelle

2 buildings with 2 recorded homes, built before 1901 – 1949, on a parcel of 268 m² (recorded area). Planning document zoning: urban zone (UM1).

Recorded area
268 m²
Planning zone
UM1Urban zone (U)
Open in the map

Address from France’s national address register (BAN), associated with this parcel for information only. Addresses and how they are linked

17300 000 AO 49917300 000 AO 50017300 000 AO 50117300 000 AO 50217300 000 AO 50317300 000 AO 50417300 000 AO 50517300 000 AO 50617300 000 AO 50717300 000 AO 50917300 000 AO 51017300 000 AO 51117300 000 AO 51217300 000 AO 51317300 000 AO 51417300 000 AO 51517300 000 AO 51617300 000 AO 51717300 000 AO 51817300 000 AO 51917300 000 AO 52017300 000 AO 52117300 000 AO 52217300 000 AO 52417300 000 AO 52617300 000 AO 58817300 000 AO 58917300 000 AO 61417300 000 AO 61517300 000 AO 66917300 000 AO 68717300 000 AO 78317300 000 AO 784
The parcel (in colour) and its neighbours, from the cadastre; computed perimeter: 73 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
266 m²from the cadastral plan
Perimeter
73 mcomputed from the cadastral plan
Buildings
2 buildingsResidential
Built
before 1901 – 1949
Height to the eaves
up to 8.1 m
Storeys
up to 2 (ground floor included)
Dwellings
2
Addresses
2 linked addresses
Clay soils
High 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

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

UM1 – 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: 241700434_PLUI_20260305

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.

All addresses in La Rochelle

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

Parking
Stationnement zone 2bis – 100% of the parcel
Other prescription
Droit de préemption urbain – 100% of the parcel
Other prescription
Périmètre d'équilibre social de l'habitat - Secteur 4 – 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”.

Sanitation zoning
zonage d'assainissement collectif – 100% of the parcel
Other information
Zone blanche – 100% 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”.

Remarkable heritage site
Site patrimonial remarquable de La Rochelle (ZPPAUP) – 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
2 buildings
2 of them also stand on other parcels; dwellings are counted for the whole building
Use
Residential
Height to the eaves
up to 8.1 m
Storeys
up to 2 (ground floor included)
Dwellings
2
Built
before 1901 – 1949

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 (100% of the parcel)
Risk prevention plan
Not recorded in the Géoportail de l'Urbanisme
Seismic zone
Zone 3 (moderate)
Radon potential
Category 1 (low)

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

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

The parcel in its section

Details

Cadastral reference
17300 000 AO 514 (17300000AO0514)
Commune
La Rochelle (17300)
Prefix
000
Section
AO
Number
514
Recorded area (contenance)
268 m²
Computed area
266 m² Computed from the plan, may differ from the recorded area.

Planning in this commune

Planning document
Intermunicipal zoning plan (PLUi) (241700434_PLUI_20260305)

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):

Source datasets used on this page: 8. Their dates and reuse terms can differ.

Sources and versions used on this page

Neighbouring parcels

Previous parcel: 17300 000 AO 513 – 28 Rue Jourdan, 17000 La RochelleNext parcel: 17300 000 AO 515 – 24 Rue Jourdan, 17000 La Rochelle