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BAG — Basisregistraties Adressen en Gebouwen
The Dutch national building registry. Contains every building's address, usage type, construction year, and status including "pand buiten gebruik" (vacant).
"The best real estate deals are found before they're listed. We built the tool to make that possible for every investor."
Our mission
Commercial real estate has always been an insider's game. The best deals — vacant warehouses, unused office buildings, empty retail units — are claimed by investors with deep networks and manual research processes long before they ever appear on Funda or a broker's website.
PropGhost changes that. We pull from the same official government registries that municipalities, notaries, and institutional investors use — and make that data accessible to any serious investor, starting at €49 per month.
What PropGhost does
Every day, our scrapers pull from official vacancy registers, land registry APIs, and company dissolution records across the Netherlands, Belgium, Germany, and the UK. We normalise, geocode, and enrich this data — then surface it on an interactive map.
When a property enters a vacancy register, PropGhost finds it within 24 hours. Pro and Agency subscribers are alerted in real time. KvK-linked ownership data lets them contact the registered owner directly — no intermediaries.
We don't scrape brokers. We don't aggregate listing portals. Everything comes from primary government sources, which means PropGhost shows you properties that simply don't exist anywhere else.
Built on open government data
The Netherlands, Belgium, Germany, and the UK all maintain public registers of land ownership and building usage. These registries are authoritative, legally binding, and updated by municipalities and notaries.
PropGhost is built on top of these open data APIs — BAG (Basisregistraties Adressen en Gebouwen), Kadaster, CadGIS, Leerstandsmelder, and HM Land Registry. We add KvK company data and Mapbox satellite imagery to give investors the full picture.
Every property shows a data reliability score based on source quality and vacancy duration, so investors always know how much confidence to place in the data.
Our data sources
All data comes from official government registries and open APIs. We never scrape brokers or listing platforms.
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Kadaster — Dutch Land Registry
Land ownership records for the Netherlands. Used to identify registered owners and cross-reference with KvK company data for business ownership.
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KvK — Kamer van Koophandel
Dutch Chamber of Commerce. Used to link property owners to their registered company details, legal status, and business address.
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CadGIS — Belgian Cadastral Data
Belgium's federal cadastral information system. Provides parcel-level data for commercial and industrial properties across all Belgian municipalities.
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Leerstandsmelder.de
Germany's public vacancy reporting platform. Community-reported and municipality-verified listings of vacant buildings across German cities.
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HM Land Registry
The UK's official land and property register. Used to identify commercial properties with recent transactions and vacancy indicators.
What we stand for
Three principles guide every product decision we make.
Data transparency
Every property shows its source, last updated date, and a reliability score. We never present data as more certain than it is.
Speed advantage
Data updates daily. Real-time alerts on Pro and Agency. We believe the investors who act fastest on quality data win deals — so we optimise for speed.
Privacy by design
We only use publicly available government data. We don't scrape personal information, and all user data is handled under GDPR. No ads, ever.
Built by Swisky
PropGhost is built and operated by Swisky, an independent software studio based in the Netherlands. Swisky builds data-driven products for niche markets — combining open government APIs with clean product design.
We're a small team with a strong belief that the best software is built close to the problem. PropGhost grew out of our own frustration with how opaque the commercial real estate market is for independent investors.
Questions? We're reachable at hello@propghost.com.
Company details
| Product | PropGhost |
| Operated by | Swisky |
| Based in | Netherlands |
| Founded | 2026 |
| Data coverage | NL, BE, DE, UK |
| Contact | hello@propghost.com |
Frequently asked questions
Is PropGhost data accurate?
PropGhost pulls from official government registries — the same sources used by notaries and institutional investors. Registry data can lag behind reality by weeks or months. Every property shows a reliability score (55–95%) based on source quality, vacancy duration, and available enrichment data. We always recommend verifying current vacancy status before approaching owners.
Which countries does PropGhost cover?
Currently the Netherlands (BAG + Kadaster + KvK), Belgium (CadGIS), Germany (Leerstandsmelder), and the United Kingdom (Land Registry). We are expanding to France and Spain in 2026.
How often is the data updated?
All data sources are scraped daily. Pro and Agency subscribers receive real-time alerts when new matching properties appear. The BAG and Kadaster APIs are refreshed every 24 hours.
Is PropGhost GDPR compliant?
Yes. PropGhost only processes publicly available government data. We handle user personal data in accordance with GDPR — see our Privacy Policy for details. We use only functional cookies and no advertising or tracking cookies.
Can I try PropGhost before paying?
Yes — all accounts start with a 14-day free trial with full Pro-level access. No credit card required. After the trial you can choose any plan or cancel.
Who is PropGhost built for?
PropGhost is built for real estate investors, developers, and agencies who want to find commercial opportunities before they reach brokers or listing platforms. Our customers range from individual investors to multi-person acquisition teams at property funds.
Start finding off-market deals today
Join investors across Europe using PropGhost to discover vacant commercial properties before anyone else.
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