Data sources & licences
Attribution register · Last updated: 2 July 2026
Every signal on Broky links to its official source. This page lists the sources we aggregate and the licences/terms under which their data is reused. We collect only what each source publishes openly, honour robots.txt with an identifying crawler, and never bypass authentication or technical protections.
Greece 🇬🇷
| Source | Data | Licence / terms |
|---|---|---|
| Διαύγεια (diavgeia.gov.gr) | Permits, planning & zoning decisions, public-property acts | Open by law 3861/2010 (OpenData API) |
| ΚΗΜΔΗΣ (eprocurement.gov.gr) | Public-works tenders, awards, real-estate services | CC-BY 4.0 — © ΚΗΜΔΗΣ |
| Γ.Ε.ΜΗ. OpenData | Company registry (developers/constructors) | ODC-BY 1.0 — Πηγή: Γ.Ε.ΜΗ. |
| ΡΑΕ / ΡΑΑΕΥ | Renewable-energy project pipeline | Open geodata portal |
| Ελληνικό Κτηματολόγιο | Cadastral parcels (ΚΑΕΚ), orthophotos (map layers) | Public ArcGIS services — © Ελληνικό Κτηματολόγιο |
| ΑΑΔΕ | Objective-value zones (map layer) | Public map service — © ΑΑΔΕ |
| Δασικοί χάρτες | Forest-map layer | © GAIAOSE / ΥΠΕΝ public service |
| Altamira Properties, Intrum Hellas, PQH | Servicer property listings (REO/auctions) | Servicers' own public catalogues (property fields only) |
| Municipal open-data permit services | Building permits (WFS) | Municipal open data |
United States 🇺🇸
| Source | Data | Licence / terms |
|---|---|---|
| NYC Open Data (data.cityofnewyork.us) | DOB permits & filings, ACRIS deeds/mortgages, Certificates of Occupancy, DOF sales, violations, evictions, licenses | NYC Open Data terms |
| NYC City Planning (MapPLUTO) | Tax-lot parcels & attributes (map layer + enrichment) | NYC DCP open data |
Statistics & basemaps 🌐
| Source | Data | Licence / terms |
|---|---|---|
| BIS (stats.bis.org) | Residential property price indices (GR source: Bank of Greece) | BIS terms — attribution |
| CARTO / OpenStreetMap | Basemap tiles | © CARTO, © OpenStreetMap contributors |
| Esri | Satellite imagery basemap | © Esri |
| CORINE / Copernicus (EEA) | Land-cover layer | © European Environment Agency |
| Photon (komoot) / Nominatim | Geocoding | ODbL — © OpenStreetMap contributors |
Company profiles are enriched from each firm's own public website (logo, contact page, project pages) with a rate-limited, robots.txt-respecting crawler that identifies itself as SignalRadarBot. Site owners can request removal at andreasvourkos@gmail.com.
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