Property intelligence for
London home buyers
London's housing market ranges from Georgian townhouses in Islington to modern riverside apartments in Canary Wharf, with some of the most varied property ages and conditions in the UK.
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Buying in London? Here's what to know
Property stock
The dominant stock varies dramatically by borough: Victorian terraces and converted flats in Hackney and Brixton, inter-war semis across the outer suburbs of Bromley and Harrow, and purpose-built mansion blocks in Kensington and Marylebone. Post-war council estates — many now ex-council leaseholds — make up a significant share of affordable purchases in zones 2-4. New-build towers in Nine Elms, Stratford and the Isle of Dogs are overwhelmingly concrete-framed with curtain-wall cladding.
Buyer warnings
London Clay causes widespread subsidence risk, particularly in south-east boroughs like Lewisham, Greenwich and Bexley where mature trees exacerbate seasonal ground movement. Japanese knotweed is increasingly found along rail corridors in outer London, and post-Grenfell cladding remediation remains incomplete on many mid-rise blocks built between 2000 and 2017. Buyers of Victorian conversions should check for permitted development compliance — many basement dig-outs and loft conversions lack proper building control sign-off.
Market context
Average prices remain the highest in the UK but growth has stalled in prime central zones while outer boroughs like Barking, Walthamstow and Croydon continue to see above-average gains driven by the Elizabeth Line effect and regeneration investment. First-time buyers are heavily concentrated in shared-ownership schemes and Help to Buy resales. The rental yield squeeze is pushing individual landlords out of the market, creating buying opportunities in ex-BTL flats across zones 3-5.
Every listing is a marketing document. The estate agent is paid when you buy — not when you make the right decision. CheckNext has no interest in whether you buy. We just want you to go in with your eyes open.
How it works
Check the listing
Paste a Rightmove or Zoopla URL. Get an instant risk assessment, running costs and viewing checklist.
Photograph the viewing
Upload photos from your viewing. Our AI assesses condition from what you actually saw.
Review the survey
Upload your surveyor's report. Get a 5-year maintenance roadmap with cost estimates.
What's in your report
Construction era
When it was likely built — and the problems that tend to come with that era.
Annual running costs
The stuff the listing never mentions: heating, maintenance reserve and council tax, estimated for this property.
Top potential issues
3–5 specific things to watch for, based on the property type, age and description.
Viewing checklist
Walk in knowing exactly what to inspect, photograph and ask the agent — before they rush you out.
Risk rating
Low / Medium / High with a straight explanation of why, not just a colour.
Summary
A plain-English verdict you can forward to your solicitor or surveyor without needing to translate it.
Viewing assessment
Upload photos from your viewing — AI spots damp patches, roof issues and defects the estate agent didn't mention.
5-year maintenance plan
Upload your surveyor's report and get a year-by-year roadmap of what needs doing and what it'll cost.
Found a property in London?
Paste the Rightmove or Zoopla URL below and get your full report in seconds. Your first 3 analyses are completely free — no card required.
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Covers all Rightmove and Zoopla listings in London and surrounding areas