BBL Immobilienportfolio - GIS POC

A single-page web application for visualizing and managing the Swiss Federal Office of Buildings and Logistics (BBL) real estate portfolio. This proof-of-concept demonstrates GIS capabilities for federal property management with an interactive map-based interface, plus complementary table and gallery views.

Live Demo: davras5.github.io/gis-immo

Features

Core Views

• Map View - Interactive Mapbox map with color-coded property markers, 3 map styles (Light, Standard, Satellite), and sidebar accordion for sharing/export
• List View - Sortable table with search, filtering, configurable columns, and export to CSV/Excel/GeoJSON
• Gallery View - Responsive 3-column grid with property cards and status badges
• Detail View - Comprehensive property dashboard with 7 tabbed sections:
  • Overview (images, basic info, mini-map)
  • Measurements (SIA 416 compliant area data)
  • Documents (plans, certificates, permits)
  • Costs (operational expenses by category)
  • Contracts (service & maintenance agreements)
  • Contacts (personnel & stakeholders)
  • Facilities (equipment & infrastructure inventory)

Search & Filtering

• Multi-source search: Local buildings + Swisstopo location API + Geokatalog layers
• 6 filter categories: Status, Ownership Type, Portfolio, Building Type, Country, Region
• Deep linking with URL-based navigation and filter persistence

Data Export

• CSV, Excel (.xlsx), and GeoJSON export
• Custom column selection before export

Tech Stack

Technology	Version	Usage
Vanilla JavaScript	ES6+	Application logic
Mapbox GL JS	v3.4.0	Interactive WebGL map
CSS3	Modern	Styling (Flexbox, Grid, CSS Variables)
GeoJSON	Standard	Geospatial data format
Swisstopo API	v3	Swiss location search
Material Symbols	Google	Icon library

No build tools or frameworks - pure static files.

Getting Started

# Python
python -m http.server 8000

# Node.js
npx http-server

# PHP
php -S localhost:8000

Then open http://localhost:8000

Project Structure

gis-immo/
├── index.html                    # HTML structure
├── js/
│   └── app.js                    # Application logic (2,800 lines)
├── css/
│   └── main.css                  # Styles & design system (3,400 lines)
├── data/
│   ├── buildings.geojson         # Core portfolio data (10+ buildings)
│   ├── area-measurements.json    # SIA 416 area measurements
│   ├── documents.json            # Plans, certificates, permits
│   ├── contacts.json             # Personnel & stakeholders
│   ├── contracts.json            # Service agreements
│   ├── costs.json                # Operational expenses
│   └── assets.json               # Equipment inventory
├── assets/
│   └── images/                   # Preview screenshots
├── documentation/
│   ├── CLAUDE.md                 # Development guide
│   ├── DATAMODEL.md              # Complete entity schema
│   └── DESIGNGUIDE.md            # Design system & components
├── README.md
└── LICENSE

Swiss Standards

This application incorporates Swiss building and property standards:

Standard	Description
SIA 416	Building area measurements (BGF, NGF, EBF)
SIA 380/1	Energy reference area
EGID	Federal Building Identifier
EGRID	Federal Property Identifier
SN 506 511	Building cost classification

Deployment

GitHub Pages: Push to main deploys automatically.

Alternatives: Netlify, Vercel, CloudFlare Pages, or any static file server.

License

Licensed under MIT

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Unofficial mockup for demonstration purposes.