Data sources and licences
Where Plotlumen's information comes from, the licence it is used under, and whether each source is currently connected.
| Source | Provider | Licence | Status |
|---|---|---|---|
| Companies House public data Free API key. 600 requests per 5 minutes. | Companies House | Public register (free API) | Not connected |
| Council tax band (VOA) Link-out only: no bulk or API access exists. | Valuation Office Agency | GOV.UK service (no API) | Connected |
| Energy Performance Certificates Free bearer token from a GOV.UK One Login account on get-energy-performance-data.communities.gov.uk. | MHCLG | Open Government Licence v3.0 (address fields restricted) | Connected |
| Flood warning areas (Environment Agency) | Environment Agency | Open Government Licence v3.0 | Connected |
| Nearby places (OpenStreetMap) Community-mapped: indicates what is nearby, not a complete register. Public Overpass API under fair use; results cached 30 days per ~100 m square. | OpenStreetMap contributors | Open Database Licence (ODbL) 1.0 | Connected |
| Planning and land data (planning.data.gov.uk) England only. Coverage depends on each local planning authority. Title boundaries are HM Land Registry INSPIRE Index Polygons (indicative). | MHCLG | Open Government Licence v3.0 | Connected |
| Postcode lookup (postcodes.io / ONS Postcode Directory) Public postcodes.io service used for development; self-host for production volume. | ONS / postcodes.io | Open Government Licence v3.0 (ONS data) | Connected |
| Price Paid Data Address display limited to residential property price information. Confirm paid-SaaS display with Royal Mail before paid launch (docs/02 §2.2). | HM Land Registry | Open Government Licence v3.0 (address fields: Royal Mail/OS conditions) | Connected |
| Street-level crime (data.police.uk) Latest published month, within about one mile. Locations are anonymised; describes the area, not the property. Not available for Scotland. | Home Office / police forces | Open Government Licence v3.0 | Connected |
| Surface water flood risk (Environment Agency, NaFRA2) England only. The EA says this map shows risk for an area and should not be used to judge an individual property; reports say so and link to the GOV.UK address check. | Environment Agency | Open Government Licence v3.0 | Connected |
| UK House Price Index | HM Land Registry / ONS | Open Government Licence v3.0 | Connected |
| Planning applications (PlanIt) Written permission for commercial use required from the operator before enabling. | PlanIt (independent aggregator) | No licence stated | Licence pending |
| UK and overseas companies that own property Commercial-use terms to be confirmed with HMLR Data Services before use. Requires monthly bulk import. | HM Land Registry | HM Land Registry licence (not OGL) | Licence pending |
| Address autocomplete (Ideal Postcodes) Pay-as-you-go account required. | Ideal Postcodes | Commercial licence (PAF/AddressBase) | Connected |
| Auction lots (Essential Information Group) No buyer-side feed licence yet. Customers track lots they find themselves; auction catalogues are never scraped. | EIG | Commercial data licence (quote required) | Licence pending |
| Comparables, rents and listings (PropertyData) Licence permits SaaS use; full T&Cs to be reviewed before enabling. 60-day cache limit. | PropertyData | Commercial API subscription | Licence pending |
| Official copies of title register and plan Requires an HMLR Business e-services account, Business Gateway credentials and a variable direct debit. User-paid only. | HM Land Registry | Statutory official copies (£7 each online) | Not connected |
Attributions
Contains public sector information from Companies House licensed under the Open Government Licence v3.0.
Contains EPC data © Crown copyright 2026, licensed under the Open Government Licence v3.0. Address fields are not displayed.
This uses Environment Agency flood and river level data from the real-time data API (Beta). © Environment Agency copyright and database right 2026.
© OpenStreetMap contributors, available under the Open Database Licence.
© Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0. Title boundaries: © Crown copyright and database rights 2026 Ordnance Survey AC0000851063.
Contains OS data © Crown copyright and database right. Contains Royal Mail data © Royal Mail copyright and database right. Source: Office for National Statistics licensed under the Open Government Licence v3.0.
Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0. Address data © Royal Mail / Ordnance Survey, used to provide residential property price information.
Contains public sector information licensed under the Open Government Licence v3.0 (data.police.uk).
© Environment Agency copyright and database rights 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0.
Contains HM Land Registry data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0.
Planning application data aggregated by PlanIt (planit.org.uk) from local planning authorities.
Address data supplied by Ideal Postcodes, incorporating Royal Mail PAF.
Official copy supplied by HM Land Registry.
Base map © OpenStreetMap contributors (ODbL), tiles by OpenFreeMap.