Coverage
Coverage and methodology
Boundary Index uses official, public, and licensed sources to support property and area research. Coverage is strongest in England and Wales today; Scotland and Northern Ireland are coming soon.
Coverage areas
What Boundary Index covers
Boundary Index draws from property, area, and risk sources for postcode research.
Property and transaction context
Residential property, address, valuation, and market context for postcode research.
Area and demographic context
Population, household, geography, deprivation, and local context for the area around a postcode.
Risk, infrastructure, and amenity context
Transport, education, environmental, and amenity context for liveability and operational risk.
Methodology
How we approach data quality
We follow a few rules for the data behind the area research.
Data we use
We use official sources and licensed feeds. We do not invent figures or present guesses as facts.
No vague claims
We only describe coverage that the underlying sources actually support. Where regional differences exist, we say so.
Ask about a source
We can answer questions about specific datasets, refresh dates, and coverage by request. We do not list every source on this page.
Boundaries
What to expect
We keep the public notes readable and handle detailed source questions in product or support.
Need something more specific?
Use the links below for formal notices and licensing information, or contact us if you have a specific question about a data source.
Review security and trust for the public safeguards notes.
Review attributions for the legal notice.
For source questions, use contact so we can answer with the right details.