About Door Number: independent house price and local area data for England and Wales

Door Number turns public records into a page for every address, street and postcode. A property page shows its sale history from HM Land Registry, its energy rating and floor area from the Energy Performance Certificate register, and the schools, transport, crime and planning records around it. Area pages add ranked streets, price trends and local guides.

Coulsdon and the CR5 postcode district sit on the border of the London Borough of Croydon and Surrey, which shows why accurate geography matters: one district, two councils, different council tax and different councillors. Every page is published only when its data and guides pass our quality checks.

Sold prices come from HM Land Registry, energy ratings from the EPC register, households and tenure from the 2021 Census, schools from the Department for Education and Ofsted, crime from police.uk and maps from OpenStreetMap contributors. All of it is public and licensed for reuse. The Data sources page lists every dataset, its licence and how often it refreshes.

Door Number is free to use. It earns money in two ways: advertising through Google AdSense, always labelled Advertisement, and partner referrals, labelled Partner offer, where we may receive a fee if you ask an estate agent, mortgage broker, conveyancer or removals firm for a quote through us.

Neither changes the figures. Prices, rankings, energy ratings and area guides are calculated from public data and are not paid for or altered by advertisers or partners. A business can claim its listing to correct its details, and any promoted placement is labelled as promoted.

Every dataset and its licence is listed on the Data sources page. Where a record does not exist we say so instead of estimating. Area guides are written by people and checked against the data, and the figures on street and property pages are calculated from the records themselves.

Sales appear a few months after completion, floor areas come from energy certificates and some homes have none, so our figures are a guide and not a valuation. If something looks wrong, tell us through the form on the Data sources page or the contact page. We check each correction against the original record and fix confirmed errors.

Door Number is run by Epic Web Agency Ltd, 128 City Road, London EC1V 2NX. You can reach us through the contact page.