TERRAMAP.BG — Bulgarian Real Estate Price Map

About the Project

TERRAMAP.BG (formerly Realm.bg) is Bulgaria's real estate price intelligence platform — an interactive map showing average prices per square meter across all 28 districts with neighborhood-level polygon precision. Over 115,000 active listings from five sources (homes.bg, alo.bg, imot.bg, imoti.net, bazar.bg) are crawled, deduplicated, geocoded against OSM boundaries, and refreshed every morning — fully automated.

Technologies

• Vanilla HTML/CSS/JS frontend — zero frameworks, single-file architecture
• Leaflet + markercluster for the interactive map, Chart.js for price history
• PHP 8 (LiteSpeed) backend with file-based JSON storage — no database
• Python data pipeline: requests + BeautifulSoup, Nominatim geocoding, point-in-polygon validation against 28 GeoJSON boundary sets
• GitHub Actions CI/CD: daily crawl, weekly AI market reviews (per-region), saved-search notifications, social token refresh
• Cloudflare CDN + Hostinger origin

Features

• Crypto-style price heatmap with neighborhood polygons
• Filters encoded in shareable URLs (transaction type, property type, price ranges, sources, time windows)
• Saved searches with double opt-in email alerts (daily digests)
• 145+ auto-generated blog analyses: weekly market reviews + per-city price breakdowns
• AI-search ready: llms.txt, Schema.org Dataset markup, AI crawler access

What Makes It Special

The whole platform runs on a zero-budget stack — static hosting, PHP, cron, and flat JSON files — yet handles 117,000+ scraped listings per day with automated dedup, water-zone geocoding masks, and reverse polygon calibration. Proof that thoughtful engineering beats infrastructure spend.