523 Route des Lacs, 40170 Saint-Julien-en-Born
2 buildings with 2 recorded homes, built 1900 or earlier, on a parcel of 479 m² (recorded area). Planning document zoning: urban zone (UBh).
- Recorded area
- 479 m²
- Planning zone
- UBhUrban zone (U)
Address from France’s national address register (BAN), associated with this parcel for information only. Addresses and how they are linked
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
- 477 m²from the cadastral plan
- Perimeter
- 101 mcomputed from the cadastral plan
- Buildings
- 2 buildingsResidential
- Built
- 1900 or earlier
- Height to the eaves
- up to 4.5 m
- Dwellings
- 2
- Addresses
- 1 linked address
- 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 UBh: 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
- 2 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
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
UBh – 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: 244000857_PLUi_20250630
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.
- 523 Route des Lacs, 40170 Saint-Julien-en-Born (linked by its position)
All addresses in Saint-Julien-en-Born
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”.
- Protected built or landscape heritage
- Périmètre de protection au titre de l'article L. 151-19 - patrimoine bâti – 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”.
- Listed or classified site
- Étangs landais sud – 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
1 of them also stands on other parcels; dwellings are counted for the whole building - Use
- Residential
- Height to the eaves
- up to 4.5 m
- Storeys
- up to 1 (ground floor included)
- Dwellings
- 2
- Built
- 1900 or earlier
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 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 40% of the 1,271 parcels of section AB whose area is recorded.
- Median recorded area in the section: 657 m².
- 522 of the section’s 1,271 parcels have a linked building, 578 an address.
- Saint-Julien-en-Born has 6,746 parcels; this one holds less than 0.01% of their total recorded area.
Details
- Cadastral reference
- 40266 000 AB 2029 (40266000AB2029)
- Commune
- Saint-Julien-en-Born (40266)
- Prefix
- 000
- Section
- AB
- Number
- 2029
- Recorded area (contenance)
- 479 m²
- Computed area
- 477 m² Computed from the plan, may differ from the recorded area.
Planning in this commune
- Planning document
- Intermunicipal zoning plan (PLUi) (244000857_PLUi_20250630)
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) (91%)
- Agricultural zone (A) (6%)
- Urban zone (U) (3%)
- Development zone (AUc) (0%)
Source datasets used on this page: 8. 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.
- BAN PLUS (rattachement géométrique adresse → parcelle)
2026-06-15— Licence Ouverte / Open Licence 2.0BAN PLUS is IGN’s product linking Base Adresse Nationale addresses to reference geographic objects, including cadastral parcels, using geometric matching.
- 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.
- BD TOPO® – bâtiments (usage, hauteur, niveaux, logements, année de construction)
2026-06-15— Licence Ouverte / Open Licence 2.0BD TOPO is IGN’s vector topographic reference dataset. Its building component describes footprints and available attributes such as use, height and selected construction information.
Neighbouring parcels
- 40266 000 AB 396 – 540 Route des Lacs, 40170 Saint-Julien-en-Born
- 40266 000 AB 1266 – 580 Route de Ternet, 40170 Saint-Julien-en-Born
- 40266 000 AB 1267 – 542 Route de Ternet, 40170 Saint-Julien-en-Born
- 40266 000 AB 1744
- 40266 000 AB 1745
- 40266 000 AB 1748 – 479 Route des Lacs, 40170 Saint-Julien-en-Born
- 40266 000 AB 2028 – 525 Route des Lacs, 40170 Saint-Julien-en-Born
Previous parcel: 40266 000 AB 2028 – 525 Route des Lacs, 40170 Saint-Julien-en-BornNext parcel: 40266 000 AB 2030