A site plan without credible relief
The site plan must show existing and projected terrain: hand-drawn relief produces sections the reviewing officer contests.
Loading
Your building permit’s site plan, grounded on the real terrain
Contour lines, sections, siting: GeoAlt produces the graphic documents a permit application requires, from measured relief.
A building permit application requires graphic documents showing the terrain as it is: site plan with relief, sections, project insertion. GeoAlt prepares these documents from IGN and cadastre data — and stays clear about their status: they are working graphic documents, not automatically compliant regulatory pieces.
What usually gets in the way
Dimensions and elevations to justify
The project’s elevations (thresholds, platforms) must rest on the real terrain: without measurement, every dimension is a negotiation.
Pieces to assemble from everywhere
Situation plan, site plan, sections, statement: data comes from the cadastre, the IGN, the zoning plan — and must tell one story.
What GeoAlt prepares
- Site plan with real relief
- Contour lines, elevation points and cadastral boundaries overlaid: the site plan shows the existing terrain as measured.
- Sections and profiles
- Sections follow the real terrain profile and host the project: the existing-versus-projected difference is readable.
- Project siting
- The project footprint is drawn on the real terrain: setbacks, heights and elevations are checked before filing.
- Zoning rules alongside
- The zoning report accompanies the graphic documents: what the zone allows, requires and forbids.
See the produced documents
The public demo generates plan, sections and report on a real parcel.
Open the demoDeliverables
- Site plan PDF (contours, boundaries, elevations)
- Sections and profiles PDF
- DXF for the architect and the design office
- Zoning report PDF
Stated technical limits
- GeoAlt deliverables are working graphic documents: they are not automatically compliant regulatory pieces of the permit application.
- Using an architect remains mandatory above the regulatory thresholds; GeoAlt prepares the material, it does not sign.
- Elevations come from public IGN data: for ground heavily altered since the measurement campaign, a field survey remains necessary.
Frequently asked questions
Do the documents replace the architect’s?
No: they prepare the ground — literally. The architect gets a reliable site plan, accurate sections and the zoning rules, and produces the signed regulatory pieces.
Which application pieces does GeoAlt help prepare?
The descriptive graphic documents of the terrain: site plan, sections, profiles, and landscape insertion elements. The statement, architectural plans and administrative pieces remain with the owner and the architect.
Are the displayed elevations authoritative?
They are sourced (LiDAR HD or RGE ALTI, with campaign date) and consistent with the official vertical datum. For recently altered ground, a complementary survey is recommended.
Can I show the project’s 3D insertion?
Yes: the siting module places the project on the real terrain and produces 3D insertion views, exportable for the application.
Prepare your site plan
Enter the cadastral reference: plan, sections and zoning report are generated on the real terrain.
Open the application