Ask plain-English questions about the London property market. Every figure comes from HM Land Registry public data — every calculation is published so you can verify it yourself.
Get instant access — £1.99Pay once, ask in plain English, get verified answers with charts.
£1.99 gives you 10 queries, valid for 7 days. No subscription, no account. Pay by card via Stripe.
Type your question naturally — median prices, borough comparisons, affordability trends, planning evidence.
Every figure is sourced from HM Land Registry. Charts and planning evidence reports included with every answer.
Real questions our users ask every day.
Monthly transaction volume across every Wandsworth postcode — refreshed from Land Registry data. Play the timeline to see where buyer activity has shifted.
No subscriptions. No account. No surprises.
From data professionals and consultants who put it to the test.
For years I have been trying to look at the HM Registry page to understand property pricing in London and always stop short after two pages. This app just did that in a couple of minutes for me.
I like how easy it is to get simple questions answered. Getting a price trend chart is veeeeery easy! Like, E16 median price is super fast. The app is definitely cool and I love that it's automatically getting fresh data from HMRC.
OpenProp runs on HM Land Registry Price Paid Data (Crown copyright, open licence). Our validation notebook and calculation scripts are published on Kaggle — the same logic that powers this tool. Open scripts, open methodology, open results. We're not hiding anything.
View our open validation notebook on Kaggle →
Professional users are encouraged to verify results independently. Found a discrepancy? Report it via the Kaggle link above.
For informational purposes only. This tool provides data analysis based on historical transaction records from HM Land Registry. It does not constitute financial, investment, legal, or property advice of any kind.
Data limitations. Coverage is limited to registered residential transactions in Greater London. Past market performance does not predict or guarantee future prices.
Always seek independent advice from a qualified professional before making any property or financial decision.