Cartie.ro
We unified a fragmented market. Here's how. An intelligence layer over the Romanian real estate market - built from scratch, shipped to production, used daily.
Table of Contents
Summary
An intelligence layer over the Romanian real estate market. Built from scratch, shipped to production, used daily.
Note: the pricing figures and the AI assistant's answers are indicative market information, derived from public listings. They are not a certified property valuation and do not constitute investment advice.
8 modules → 1 screen
Explorer, Heatmap, AI Search, Duplicate Detection, Live Feed, Statistics, Sellers, Reports.
4 portals → 1 database
Imobiliare, Storia, Imoradar24, HomeZZ - aggregated, deduplicated, automatically enriched.
AI with catalog access.
A conversational assistant that answers from real data, with citations to concrete listings.
Live, in seconds.
30s refresh, pricing recalculated in real time, H3 hexagons across all of Romania.
The Challenge
"A real estate agent loses 1+ hour a day opening 4 portals and correlating them manually. And the market loses transparency."
- Fragmentation. No portal sees the whole market.
- Price-manipulating duplicates. The same property, dozens of variants, hundreds of percent difference.
- No public pricing. There is no standard for €/sqm at neighborhood level.
- Invisible inventory. Who sells a lot, where, at what price - information buried.
- Slow reaction. The best opportunities leave in the first hours.
The Solution
Cartie.ro: aggregation + deduplication + AI search + pricing intelligence + seller directory + live feed + automated reports - in a single product.
What Nobody Else Does
Four things that exist in no other Romanian portal:
Aggregation, not competition
We don't sell listings. We see the whole market, regardless of portal.
Public pricing per hexagon
The first median €/sqm reference at neighborhood level. It becomes the source of truth.
AI with real data
Tool calling over the internal catalog. Verifiable citations, not generic search.
Transparency over duplicates
The only platform that shows when the same apartment has 200 price variants.
Delivered Features
Eight modules that work together - each a game changer for a real estate agent.
Explorer
The whole market on a single screen. Interactive map + list + filters + AI search.
- Leaflet + Carto map with dynamic hexagonal clustering.
- Parallel filters over source, county, price, rooms, area.
- Natural-language AI search directly in the search bar.
Explorer: map + list in split-view, listings from 4 portals on a single screen.
Heatmap
Median prices per neighborhood, in real time. H3 hexagonal layer over all of Romania.
- Median €/sqm per hexagon, recalculated when inventory changes.
- Trends vs parent-city and vs older listings.
- One-click neighborhood report - distribution, area, types.
Bucharest Heatmap: selected hexagon with a full neighborhood report.
Duplicate Detection
The end of phantom listings. The same property listed by 200 sellers? Now it shows.
- Automatic matching by geo, area, rooms and description.
- Groups sorted by maximum price difference - thousands of percent.
- Total visibility for the buyer and the agent.
Duplicate groups: the same property, all variants, all prices.
AI Assistant
Ask a question. Get real listings. Not a chatbot - an LLM with direct catalog access.
- Tool calling (search_db) over a vector + relational database.
- Concrete citations in the answer - every claim has a link.
- Persistent conversations per account - resume, refine, save.
AI Assistant: a natural-language question returns real listings with price and link.
Want a web platform like Cartie.ro?
Reply within 48h. No strings attached.
Statistics
A live market dashboard. All sources, all ranges, all counties.
- Live metrics: total listings, average price, median price.
- Visual distributions by source, price range, county.
- Temporal evolution - price trend over the last months.
Market statistics: a live dashboard with distributions and trends.
Sellers
The Google of real estate agents. All sellers, indexed and profiled.
- Measured profiles: active listings, cities, average price, evolution.
- Filters by type: agency, developer, private.
- 'Agency of the month' ranking by real activity, not payment.
Seller directory: ranking, filters and drill-down into each one's inventory.
Live Feed
First to see, first to take. New listings from all sources, refreshed every 30s.
- Live stream without reload - a continuous feed of new inventory.
- Instant filters over the feed: source, type, city, county.
- Summary panel: total, distribution by source, top active zones.
Live Feed: new listings in chronological order, refreshed every 30s.
Market Report
Executive reports per city, downloadable. What took 2 days in Excel - now one click.
- Automatic generation, always up to date.
- Executive metrics: average €/sqm, days on market, discount rate.
- Neighborhood evolution - 12-month trends.
City Market Report: average price, neighborhood evolution, PDF export.
Results
A typical agent's day - before and after Cartie.ro:
| Activity | Before | After |
|---|---|---|
| Monitoring new inventory | ~1h, 4 tabs in parallel | 5 min, Live Feed |
| Pricing a property | Excel + "feeling" | 30 sec, selected hexagon |
| Screening a lead | 30 min searching portals | 1 question in the AI |
| Checking an offer is real | Intuition, no proof | Duplicate Detection |
| Weekly market report | 2 days in Excel | 30 sec PDF download |
| Identifying an active seller | Manual investigation | Directory with ranking |
For a newcomer: what a veteran learned in 5-10 years becomes visible in one app. The barrier to entry into the industry drops dramatically.
Want a web platform like Cartie.ro?
Reply within 48h. No strings attached.
Technical Spotlight
// Backend
FastAPI (Python) - high-throughput API and ETL orchestration
// Data & Geo
PostgreSQL + PostGIS, H3 hexagons, ElasticSearch + vector DB
// AI
LLM with tool calling (search_db) over the internal catalog, verifiable citations
// Infrastructure
Crawlers, ETL pipeline, CDN, monitoring - production-grade and traffic-resistant
VisitCartie.ro
See the live platform, in production
Want a web platform like Cartie.ro?
Reply within 48h. No strings attached.
Services used in this project
The services behind this build. See what each one covers and how it would apply to your case.
Sector
Real estate & PropTech