Sources · 30 registers and datasets
Data sources and licences
We use public registers and open data that may be reused. Sales data (Land Registry) and listings (Funda) are obtained under licence through Altum AI. We do not extract data ourselves from websites that prohibit automated extraction (such as the WOZ-waardeloket or property portals).
| Source | Data holder | Licence | Attribution | Status |
|---|---|---|---|---|
| PDOK Locatieserver | Kadaster / PDOK | Public domain (underlying BAG) | PDOK Locatieserver | In use |
| Addresses and Buildings Register (BAG) | Land Registry (Kadaster) and municipalities | Public Domain Mark 1.0 | BAG, Kadaster | In use |
| 3D BAGHeights and volumes are derived from elevation measurements (AHN point cloud) and are therefore indicative. | TU Delft 3D geoinformation & 3DGI | CC BY 4.0 | 3DBAG by tudelft3d and 3DGI | In use |
| Cadastral map (BRK)The cadastral map is indicative and not intended for legally measuring plot boundaries. | Land Registry (Kadaster) | CC BY 4.0 | Kadastrale kaart, Kadaster | In use |
| CBS Districts and Neighbourhoods (Wijken en Buurten)Statistical averages at neighbourhood level; they say nothing about this home or its residents. | Statistics Netherlands (CBS) | CC BY 4.0 | CBS, Kerncijfers wijken en buurten | In use |
| CBS 100 m grid statistics (proximity of amenities)Distances by road and counts within a radius, averaged for the residents of a 100 × 100 m grid square. Not travel times, and not measured from this front door. | Statistics Netherlands (CBS) | CC BY 4.0 | CBS, Vierkantstatistieken 100 m | In use |
| Large-Scale Topography Register (BGT)The BGT describes the physical layout of the land (buildings, paving, greenery, water). Small or recent changes are not always included; it is not a structural or legal record. | BGT data holders (municipalities, provinces, water boards, central government) via Kadaster/PDOK | CC0 1.0 | BGT, via PDOK | In use |
| Omgevingsloket (DSO): environment plan and zoning plansIndicative overview, not legal advice. Since 1 January 2024 zoning plans (bestemmingsplannen) have been part of the municipality's environment plan (omgevingsplan); changes to it take precedence. Always check the rules and the permit check in the Omgevingsloket. | Central government, provinces, water boards and municipalities via the Digital System for the Environment and Planning Act (DSO) | Regulations (public); use under the DSO fair use policy | Omgevingsloket / Digitaal Stelsel Omgevingswet | In use |
| Police: registered crimes per neighbourhoodRegistered crimes by place of offence, not actual crime: not everything is reported, and shopping or nightlife areas attract certain offences. Says nothing about this home. | Dutch Police, via CBS (table 47022NED) | CC BY 4.0 | Politie, data.politie.nl | In use |
| Public transport stops (GTFS timetable)Stops served according to the current timetable; straight-line distance. Says nothing about how often services run. | Transport operators via NDOV; processed by OVapi / Stichting OpenGeo | Free to use (best effort, no formal open licence) | OV-data: NDOV / OVapi | In use |
| External Safety Risks Register (REV)An area of concern (aandachtsgebied) is the area where an accident involving hazardous substances could have consequences. It says nothing about the probability of an accident. See the map in the Atlas Leefomgeving for the exact location. | Rijkswaterstaat / Ministry of Infrastructure and Water Management; data from environmental services, municipalities and pipeline operators | Statutory public register (Besluit kwaliteit leefomgeving) | Register Externe Veiligheidsrisico's, Rijkswaterstaat | In use |
| Comparable sales (Kadaster and Funda)Sales of comparable homes in the area (Kadaster and Funda, via Altum AI), in price ranges; the source is shown per sale. 'Adjusted to today' corrects the old price for price changes since then. | Kadaster and Funda, via Altum AI B.V. | Commercial licence (API) | Kadaster en Funda via Altum AI | In use |
| Previous sales of this home (Land Registry)Purchase prices as registered with the Land Registry (Kadaster, a public register). We do not show names of buyers or sellers. A purchase price may include movable items or, for a sale within the family or of several properties at once, differ from the market value. | Land Registry (Kadaster), via Altum AI B.V. | Commercial licence (API) | Kadaster via Altum AI | In use |
| Homes for sale (Funda)Asking price and listing status as known when the data was retrieved. The asking price is not a sale price; check the current status on Funda or with the estate agent. | Funda, via Altum AI B.V. | Commercial licence (API) | Funda via Altum AI | In use |
| Sustainability advice (calculation model)Calculation model based on building characteristics: it does not know the actual condition of the home and often assumes little insulation. Costs, savings and value increase are indications; have an energy adviser inspect the home for tailored advice. | Altum AI B.V. | Commercial licence (API) | Altum AI | In use |
| Indicative foundation risk areas (funderingskaart)Indicative map per postcode: combines soil type and the share of buildings from before 1970. Says nothing about the type or condition of this home's foundation. | KCAF and RVO, via PDOK | Public Domain Mark 1.0 | Funderingskaart KCAF, RVO | In use |
| Natura 2000 | Ministry of Agriculture, Fisheries, Food Security and Nature (LNV) / RVO, via PDOK | Public Domain Mark 1.0 | Natura 2000, RVO | In use |
| Nature Network Netherlands (Natuurnetwerk Nederland) | Provinces, via PDOK | CC0 1.0 | Natuurnetwerk Nederland, provincies | In use |
| DUO Open Education Data (school locations)Locations of publicly funded schools according to DUO, updated weekly. Straight-line distances; says nothing about admission or quality. | Education Executive Agency (DUO) | CC BY 4.0 | DUO, Open Onderwijsdata | In use |
| ProRail railways | ProRail | CC0 1.0 | ProRail, via PDOK | In use |
| EP-Online (energy labels) | Netherlands Enterprise Agency (RVO) | Public register; RVO API terms of use | EP-Online, RVO | Requires API key |
| Official announcements (bekendmakingen)This overview is based on publicly available digital announcements and is not a complete building or permit history. | KOOP / Overheid.nl | Public domain (Art. 11 Dutch Copyright Act) | Overheid.nl, officiële bekendmakingen | In use |
| Key Register of the Subsurface (BRO) | Ministry of the Interior (BZK) / TNO – Geological Survey of the Netherlands | Public (BRO Act) | BRO, Basisregistratie Ondergrond | In use |
| BRO Soil Map 1:50,000Map at a scale of 1:50,000; built-up areas are not mapped. Not a substitute for on-site soil investigation. | Wageningen Environmental Research / BRO | CC0 1.0 | BRO Bodemkaart, PDOK | In use |
| National Monuments Register (Rijksmonumentenregister) | Cultural Heritage Agency of the Netherlands (RCE) | CC BY 4.0 | Rijksdienst voor het Cultureel Erfgoed | In use |
| Amsterdam monuments register | City of Amsterdam | CC0 1.0 | Gemeente Amsterdam, monumenten | In use |
| EU noise maps 2021Strategic noise maps show calculated contours from 55 dB Lden around major sources. Outside a contour the noise level is lower or not mapped; local situations may differ. | Ministry of Infrastructure and Water Management, municipalities (Environmental Noise Directive, INSPIRE) | CC0 1.0 | Geluidbelastingkaarten Richtlijn omgevingslawaai 2021 | In use |
| Large-scale Concentration Maps Netherlands (GCN)Annual average on a 1×1 km grid; concentrations can be locally higher along busy roads. | National Institute for Public Health and the Environment (RIVM) | Public Domain Mark 1.0 | RIVM, Grootschalige Concentratiekaarten Nederland | In use |
| Climate Impact Atlas (Klimaateffectatlas)Model-based area indicators. This is not a structural or legal assessment of the individual home. | Climate Adaptation Netherlands (Stichting CAS) | CC BY 4.0 | Klimaateffectatlas, 2026 | In use |
| Aerial photo and BRT base map | Beeldmateriaal Nederland / Kadaster (PDOK) | CC BY 4.0 | Kaart en luchtfoto: Kadaster / Beeldmateriaal Nederland, PDOK | In use |