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.

DatasetAuthorityCoverageVintageNotes
EPCMHCLG EPC RegisterEngland2026-03Bulk mirror vintage 2026-03-31 (refresh rework scheduled); per-address lookups are live.
FloodEnvironment AgencyEngland2026-08Live alert feed; statutory flood zones refreshed quarterly. England only.
Planningplanning.data.gov.ukEngland2026-05LPA coverage is partial — absence of a record is NOT absence of a constraint. England only.
HMLRHM Land Registry (Price Paid)England2026-08Mirror refreshed monthly (22nd); recent months are incomplete at source (registration lag).
CrimePolice.ukGreat Britain2026-08Police.uk publishes with a ~2-month lag; locations are anonymised map points.
BroadbandOfcom Connected NationsGreat Britain2026-01Annual dataset; next release expected Dec 2026.
AirQualityDEFRA UK-AIRGreat Britain2026-08
TransportTfL / NaPTAN / National RailUnited Kingdom2026-08
HeritageHistoric EnglandEngland2026-08
DemographicsONS Census 2021England & Wales2021-03Decennial census; small-area figures are as-at census day 2021.
NoiseDEFRA Noise MappingEngland2026-08
SchoolsDfE / Ofsted / GIASEngland2026-08Mirror refreshed monthly (GIAS 5th, Ofsted 25th).
CouncilTaxVOA Council Tax BandsEngland2024-09Always an estimate — no lawful per-address band source exists. Confirm with the VOA.
HealthcareCQC / NHS DigitalEngland2026-08Mirror refreshed quarterly.
EVChargingOpenChargeMapUnited Kingdom2026-08© OpenStreetMap contributors. Community-maintained, not an official source.
RentalONS Private Rental Market StatsEngland & Wales2023-09STALE: the source series was discontinued; replacement with ONS PIPR is scheduled. Treat yields as indicative.
RoadAccidentsDfT STATS19Great Britain2024Latest published collision year (annual publication lag is upstream).
FoodHygieneFood Standards AgencyEngland2026-08
DeprivationMHCLG IMD 2025England2025
AmenitiesOpenStreetMapUnited Kingdom2026-08© OpenStreetMap contributors. Community-maintained, not an official source.

Licences & attribution

Statements re-users must carry are on /attribution and embedded machine-readably in every API response (meta.attribution).