Find out what the listing doesn’t say about the building.

The problem

The listing tells you how many rooms the flat has. It doesn’t tell you if the block is on the seismic risk list.

Someone buying a flat in Bucharest has a few days to decide. The facts about the building exist, but they are published in different places: PDF lists from AMCCRS, hot water outage notices from Termoenergetica, the notary price grid in two volumes of more than 800 pages each, the insulation lists on each sector town hall’s website. There are services that check the paperwork or the price. Nobody checked the building.

What it does

Type the address and get a report with a summary and one card per topic. Each card has the level, the reason, the key number, the source with a link and the date of the data. Where there is no data, the card is grey and says what you can do to find out.

• Seismic riskthe AMCCRS list and the construction year
• Construction yearbefore or after the 1978 building code
• Hot wateroutages at the substation over the last year
• Insulationthe town halls’ insulation lists
• Notary price gridthe minimum value per zone, from CNPB
• Noisethe strategic noise maps reported to the EU
• Air qualitythe official monitoring stations
• Floodsthe Apele Române hazard maps
• Public transportlines with a stop within walking distance
• Monumentswhether the block is a listed monument

12 modules in total; the main ones are above.

Browser extension: on imobiliare.ro you add listings to a list and compare them. It is not yet published in the Chrome Web Store.

In numbers

buildings in the database

134,333

apartment blocks

14,226

addresses

138,233

entries on the seismic risk list

2,796

hot water outages, at 1,726 substations

147,865

values from the notary price grid

~110,000

public sources

12+

Source: BlocCheck, data as of October 2026; AMCCRS, via BlocCheck, data as of October 2026; Termoenergetica, via BlocCheck, data as of October 2026; CNPB, via BlocCheck, data as of October 2026.

How it’s built

Each source has its own import module, which reads the published format (PDF, Excel, web pages, maps) and links the rows to buildings, with a confidence level for every match. Anything that doesn’t match for certain goes into a list to check by hand, not into your report.

Data

PostgreSQL + PostGIS, Python importers

API

FastAPI

Website

React + Vite, MapLibre map

Server

Docker and Caddy, on a Hetzner server

Tests

pytest and Vitest

Way of working

Written specs and plans, built with Claude Code

Stage

1. Prototype

   The full report for Bucharest addresses.

2. Live, free

   Soft launch on LinkedIn on 26 Oct 2026, the week after the earthquake. You can support it through Buy me a coffee.

3. Paid report

   Planned: the full report at 49 lei (one-off, 7 days, PDF) and a pack of 5 reports at ~149 lei.

4. For businesses

   Planned: an API per address, portfolio screening for banks and insurers, data licensing, area reports, a white-label report or badge for portals.

What’s next

• A second city: Iași, then Constanța.
• The browser extension published in the Chrome Web Store.
• The paid full report and the first business reports.

Links

• bloccheck.rothe live site
• contact@bloccheck.roquestions about BlocCheck
• buymeacoffee.com/catzasupport the project
• Pitch deck, 16 slide-uri, RO și ENon request, by email