The data catalog
20 official & open data sources, each with its authority, coverage, licence and vintage. If a dataset is stale or partial, this page says so — the same honesty the API encodes in every response's provenance block.
Data periods come from publisher releases or source records. A recent refresh does not imply a newer publisher release; dates the source does not report remain unknown.
| Dataset | Authority | Coverage | Data period | Last refresh | Notes |
|---|---|---|---|---|---|
| EPC | MHCLG EPC Register | England & Wales | Not reported | Not recordedRefresh: unknown | Published mirror coverage and count could not be verified. Per-address lookups use the live API where available; the mirror supports fallback and aggregates. |
| Flood | Environment Agency | England | 2026-05-20 | 2026-10-05Refresh: current | Live EA Flood Map for Planning zones (revision 20 May 2026) and alerts. An explicitly dated August 2023 mirror is used only when the current zone service is unavailable. England only. |
| Planning | planning.data.gov.uk | England | Not reported | 2026-10-08Refresh: current | LPA coverage is partial — absence of a record is NOT absence of a constraint. England only. |
| HMLR | HM Land Registry (Price Paid) | England | Not reported | 2026-11-01Refresh: current | Mirror refreshed monthly after HMLR publishes its increment; recent months are incomplete at source (registration lag). |
| Crime | Police.uk | Great Britain | 2026-08 | Live / source-dependent | Police.uk publishes with a ~2-month lag; locations are anonymised map points. |
| Broadband | Ofcom Connected Nations | Great Britain | 2026-01 | 2026-08-25Refresh: current | Connected Nations Spring 2026, published 13 May 2026; coverage observed January 2026. |
| AirQuality | DEFRA UK-AIR | Great Britain | Not reported | Live / source-dependent | Published UK Daily Air Quality Index from a monitoring station within 25 km. Observation time is supplied separately; this feed does not provide pollutant concentrations, annual averages or WHO annual-guideline compliance. |
| Transport | TfL / NaPTAN / National Rail | United Kingdom | Not reported | 2026-10-01Refresh: current | |
| Heritage | Historic England | England | Not reported | Live / source-dependent | |
| Demographics | ONS Census 2021 | England & Wales | 2021-03 | Live / source-dependent | Decennial census; small-area figures are as-at census day 2021. |
| Noise | DEFRA Noise Mapping | England | 2022 | Live / source-dependent | Round 4 modelled road, rail and airport noise for England; road and rail modelling uses 2021 conditions. |
| Schools | DfE / Ofsted / GIAS | England | Not reported | 2026-10-05Refresh: current | Mirror refreshed monthly (GIAS 5th, Ofsted 25th). |
| CouncilTax | VOA Council Tax Bands | England | 2026-09-08 | 2026-09-24Refresh: current | Stock context uses VOA aggregates. Annual cost is an estimate from MHCLG local-authority average charges and an assumed property band; it is not an address-specific bill. Confirm the band with VOA and charges with the council. |
| Healthcare | CQC / NHS Digital | England | Not reported | 2026-10-10Refresh: current | Mirror refreshed quarterly. |
| EVCharging | OpenChargeMap | United Kingdom | Not reported | Live / source-dependent | Live API with a 24-hour response cache. Provider/licence metadata is retained per record where supplied. |
| Rental | ONS Price Index of Private Rents | United Kingdom | 2026-08 | 2026-09-16Refresh: stale | Monthly average rent at local-authority level in England and Wales and BRMA level in Scotland. Yield remains an indicative area-level calculation. |
| RoadAccidents | DfT STATS19 | Great Britain | 2025 | 2026-10-01Refresh: current | The latest collision year is read from the successful import or report coverage; publication lags the calendar year. |
| FoodHygiene | Food Standards Agency | England | Not reported | Live / source-dependent | |
| Deprivation | MHCLG IMD 2025 | England | 2025 | Live / source-dependent | |
| Amenities | OpenStreetMap | United Kingdom | Not reported | Live / source-dependent | © OpenStreetMap contributors. Community-maintained, not an official source. |
Methodology pages
Licences & attribution
Statements re-users must carry are on /attribution and embedded machine-readably in every API response (meta.attribution).