The public record, joined up.
The UK publishes some of the richest property data in the world. Viiyoo brings it together around each property, keeps the source and date on every fact, and shows you when sources disagree.
| Fact | Source | As of |
|---|---|---|
| Last sale price | HM Land Registry Price Paid | Record date |
| Floor area, energy rating | EPC Register | Certificate date |
| Price trend adjustment | UK House Price Index | Monthly |
| Housing allowance | VOA Local Housing Allowance | Annual |
| Flood zone | Environment Agency | On request |
| Conservation area | planning.data.gov.uk | On request |
Illustrative
Built on open and official records.
Market data covers Great Britain. Sales records, energy certificates and valuations cover England and Wales; Scottish valuations need the Scottish sales register. Naming a source tells you where a figure came from; it doesn't imply that the organisation endorses Proanex.
Sales
HM Land Registry Price Paid data, for every recorded residential sale.
Energy & floor area
The EPC Register: energy ratings, floor areas and building attributes.
Price trends
The UK House Price Index, used to bring older sales to today's values.
Housing allowance
VOA Local Housing Allowance rates by rental market area and bedrooms.
Flood risk
Environment Agency flood zones, flood areas and live warnings.
Planning constraints
planning.data.gov.uk: conservation areas, Article 4, listed buildings, tree preservation orders.
Crime
data.police.uk street-level crime around the property.
Census
Census 2021 household tenure for the local neighbourhood.
Deprivation
The English Indices of Deprivation 2025 for every neighbourhood.
Incomes
Local incomes, for how affordable an area's rents and prices are.
Planning applications
Applications and decisions for each home and the streets around it.
Geography
ONS boundaries for regions, local authorities, wards and postcode districts.
Clean, joined and honest about gaps.
Raw property data is messy: addresses written five ways, floor areas that disagree, records that arrive late. We do the unglamorous work so you don't have to.
- Matched to the property. Records are resolved to a single property identity, so sales, energy data and planning line up.
- Provenance kept. Every value keeps its source and date, so you can cite it or check it.
- Conflicts shown, not hidden. When two sources disagree, both are kept and the disagreement is flagged.
- Your data stays yours. Portfolios and documents you upload are private to your organisation.
- Licences respected. Open data is used under its licence, with attribution, including the Open Government Licence.
See the evidence on your property.
Request early access and we'll run Viiyoo on an address you know.