A collection of browser-based tools for working with Swiss building and parcel data — built around the official Gebäude- und Wohnungsregister (GWR), the ÖREB cadastre, and swisstopo APIs.

You don't need to install anything — every app is deployed on GitHub Pages.

Verify your building records against the official GWR. Upload a CSV or Excel file with EGIDs, enrich each record against the public GWR API, review on an interactive map and sortable table, then export the enriched results. All processing happens in the browser — no data leaves your device.

• Link: https://bbl-dres.github.io/geo-check/

Search the Swiss ÖREB cadastre by municipality, EGRID, parcel number, PLZ, or canton. Autocomplete, area calculation, and direct links to official ÖREB extracts. Uses the swisstopo ÖREB layer. Multilingual: DE / FR / IT.

• Link: https://bbl-dres.github.io/geo-check/app-oereb/

Project-management-style prototype for building-data quality workflows. Multi-source validation (GEOREF / SAP RE-FX / GWR), confidence scoring across 5 dimensions, kanban board with status workflow, inline correction tracking, role-based authentication (Supabase Auth), and a Deno + Hono rule engine backend. German UI.

• Link: https://bbl-dres.github.io/geo-check/prototype-pm/

graph LR
    A["Upload<br/>CSV / XLSX"] --> B["Enrich<br/>vs. GWR"]
    B --> C["Review<br/>Map + Table"]
    C --> D["Download<br/>enriched file"]
    D --> E["Fix source data"]
    E --> A

1. Upload a CSV or Excel file with your building data (requires internal_id and egid columns)
2. Enrich — each EGID is looked up against the public GWR API; address, coordinates, building type, and more are compared and scored (0–100)
3. Review — explore results on an interactive map with color-coded markers and a sortable, filterable table
4. Download — export enriched results as CSV, Excel, or GeoJSON
5. Fix & repeat — correct mismatches in your source file and re-upload to verify improvements

• Interactive map — MapLibre GL with CARTO basemaps (Positron, Dark Matter, Voyager) and Swisstopo aerial imagery; location search via swisstopo SearchServer
• Results table — sortable, filterable, paginated; confidence presets (High / Medium / Low); clickable badges to filter by match result; column visibility toggle
• Match scoring — weighted comparison across street, house number, ZIP, city, canton, building type, and coordinates with confidence classification
• GWR code resolution — integer codes (building category, class, status, heating, etc.) resolved to multilingual labels (DE / FR / IT)
• Export formats — CSV (semicolon, UTF-8 BOM), Excel (results + summary sheets), GeoJSON
• Multilingual — DE, FR, IT, EN interface

The main Geo-Check app does all processing in the browser. No data is uploaded to any server.

• No backend, no database, no cookies, no analytics
• Only the EGID (a public building identifier) is sent to the GWR API
• Nothing persists between sessions — close the tab and data is gone

(The PM Prototype is a separate app that uses Supabase for auth/storage — different privacy model, see prototype-pm/README.md.)

All swisstopo APIs used here are public and require no API key.

All loaded via CDN — no build step, no node_modules in the main app.

geo-check/
├── index.html              # Main app — Geo-Check (GWR validator)
├── css/                    # Main app styles
│   ├── tokens.css          # Design tokens (colors, spacing, typography)
│   └── styles.css          # Component styles
├── js/                     # Main app modules (ES6, no build step)
│   ├── main.js             # App state machine (upload → processing → results)
│   ├── upload.js           # File parsing, column detection, mapping UI
│   ├── processor.js        # GWR API calls, batching, match scoring
│   ├── map.js              # MapLibre GL map, markers, popups
│   ├── table.js            # Results table, sorting, filtering, pagination
│   ├── export.js           # CSV, XLSX, GeoJSON generation
│   ├── gwr-codes.js        # Code → label resolution
│   ├── i18n.js             # Translations (DE / FR / IT / EN)
│   └── utils.js            # String similarity, helpers
├── data/
│   └── gwr-codes.json      # GWR code tables (DE / FR / IT)
├── assets/
│   ├── demo-buildings.csv  # Sample data for testing
│   ├── GWR Codes.xlsx      # Source for gwr-codes.json
│   └── *.jpg / *.svg       # Previews, social image, branding
├── app-oereb/              # ÖREB Parcel Search app
│   ├── index.html
│   ├── css/style.css
│   └── js/
│       ├── app.js          # Search, results, detail, area calculation
│       └── i18n.js         # Translations (DE / FR / IT)
├── prototype-pm/           # PM Prototype (Supabase + Deno backend + kanban)
│   ├── index.html
│   ├── js/                 # Auth, map, kanban, detail panel, statistics
│   ├── backend/            # Deno + Hono rule engine (port 8787)
│   ├── supabase/           # Edge functions, config
│   └── docs/               # DATABASE.md, EDGE-FUNCTIONS.md, RULES.md
└── docs/
    ├── SPECIFICATION.md    # Full specification of the main app
    └── INSTRUCTIONS.md

The main app and ÖREB app have no build step and no node_modules. The PM Prototype has a Deno backend — see prototype-pm/README.md for setup.

Serve the project root with any static file server:

# Python
python -m http.server 8000

# Node.js (npx)
npx serve .

# VS Code
# Install "Live Server" extension, right-click index.html → Open with Live Server

Then open:

• http://localhost:8000/ — main Geo-Check app
• http://localhost:8000/app-oereb/ — ÖREB Parcel Search
• http://localhost:8000/prototype-pm/ — PM Prototype (frontend only; backend setup in prototype-pm/README.md)

Upload a CSV or Excel file with these columns:

Column headers are matched case-insensitively with common aliases (e.g., plz → zip, hausnummer → street_number). A sample file is available at assets/demo-buildings.csv.

MIT — developed by the Bundesamt für Bauten und Logistik (BBL) of the Swiss Federal Administration.