Greater London · Property Check
Property check London: 12 things to check before buying
Buyers in London can pull together a complete pre-offer due-diligence picture in roughly 30 minutes using free public data and one or two paid layers. This page walks through the 12 checks in order: what each one is, where the data comes from, and what to do with the result.
Last updated: 6 May 2026. Editorially reviewed: 20 May 2026.
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Check the property before you offer
Flood, subsidence, EPC, crime, schools, transport, broadband, tenure, age, listed status and price checks where data is available.
Run a free previewWhy these checks matter in London
London sits on the Thames floodplain with the river bisecting the city and a tidal limit at Teddington Lock. The Environment Agency ranks the Thames Estuary as one of the highest-stake flood-defended floodplains in Europe, protected by the Thames Barrier since 1982, but tributaries like the Lea, Wandle, Roding, Brent and Ravensbourne carry their own river-flood risk, and surface water flooding is the more frequent buyer headache across most boroughs.
Most of London sits on London Clay, a stiff, blue-grey marine clay that shrinks in dry summers and swells when re-wetted. London Clay is the textbook case study for clay shrink-swell subsidence in the UK and the BGS rates susceptibility as high to very high across most boroughs.
Different cities have different headline risks. The 12 checks below are the ones that matter for UK addresses, subject to source coverage. The relative weight you give each one will differ in London compared to, say, a coastal town or a former mining village.
The 12 checks
- 1
Flood risk
National flood-map sources, surface water and reservoir checks where available.
- 2
Subsidence and ground stability
BGS clay shrink-swell, mining history, geology context.
- 3
EPC band and energy cost
Current EPC, MEES rules, projected fuel cost.
- 4
Building age and construction era
Pre-war, inter-war, post-war, modern. This points to the defects to expect.
- 5
Listed building or conservation area status
Historic England listing, local conservation designations.
- 6
Crime data
Police.uk reported offences for the postcode and street.
- 7
Schools and Ofsted
Catchment, last inspection, performance bands.
- 8
Broadband and mobile coverage
Ofcom available speeds and mobile signal at the address.
- 9
Transport and connectivity
Walk to nearest station, road network, EV charger availability.
- 10
Tenure
Freehold, leasehold, share of freehold, commonhold.
- 11
Price comparison
HM Land Registry Price Paid, recent comparables on the street.
- 12
Environmental and noise
Air quality, noise sources, contaminated land history.
Headline risks for London buyers
Flood
Documented flood-prone areas include Thamesmead and parts of Bexley (tidal); Stratford, Hackney Wick and the Lea Valley (river); Wandsworth, Tooting and the Wandle corridor; Lewisham along the Ravensbourne; and surface-water hotspots in central London including parts of Soho, Bloomsbury and Earl's Court that flooded in July 2021.
Read the full Londonflood risk guide →Subsidence
BGS GeoSure rates clay shrink-swell susceptibility as high or very high across the majority of inner and outer London. The 2003, 2018 and 2022 dry summers each triggered subsidence-claim spikes; insurer industry data attributes the bulk of UK subsidence claims to London Clay regions.
Read the full Londonsubsidence risk guide →How to run all 12 checks for one London address
The free preview pulls available flood-zone, BGS subsidence, EPC, building age and listed status signals in about 15 seconds. The £12.99 report adds the remaining checks, buyer notes and a PDF.
Run the check
Check the property before you offer
Flood, subsidence, EPC, crime, schools, transport, broadband, tenure, age, listed status and price checks where data is available.
Run a free previewFrequently asked questions
What should I check before buying a house in London?
London sits on the Thames floodplain with the river bisecting the city and a tidal limit at Teddington Lock. The Environment Agency ranks the Thames Estuary as one of the highest-stake flood-defended floodplains in Europe, protected by the Thames Barrier since 1982, but tributaries like the Lea, Wandle, Roding, Brent and Ravensbourne carry their own river-flood risk, and surface water flooding is the more frequent buyer headache across most boroughs. The 12 standard buyer checks cover flood, subsidence, EPC, building age, listed status, crime, schools, broadband, transport, tenure, price comparison, and environmental risk. The full list is on this page; per-address data is available on the property check tool.
Is London a good place to buy property?
That depends on your budget, work location, and what you want from a neighbourhood. A website cannot answer that for you. What this page can tell you is what data may exist for a London address: flood, subsidence, EPC, crime, schools, broadband, transport, tenure, listed status, price comparison, and environmental risk.
How do I run a property check on a specific London address?
Enter the postcode in the property scanner on the homepage. The free preview pulls available EPC, flood-zone, BGS subsidence, building age and listed-status signals. The £12.99 report adds the remaining checks, price comparison, buyer notes and a PDF.
Keep going
Related London buyer pages
Editorial review
Editorial owner: BiteRight Ltd, operator of MyPropertyScan. We review buyer guides against UK public property datasets, RICS survey wording, lender requirements, and common buyer questions.
Pages are updated when source coverage, property-risk guidance, survey cost assumptions, or product checks materially change. Methodology and dataset limitations are explained on the MyPropertyScan methodology page.
Sources used
We use UK public and specialist sources where they are available. Public datasets can be incomplete, delayed, or missing for some addresses. Treat them as a starting point, not as a replacement for professional advice.
Source standard: preference goes to official government datasets, statutory bodies, professional standards, and primary dataset publishers. We cite the source family on the page and explain coverage limits rather than filling gaps with unsupported estimates.
General information only. Not legal, mortgage, insurance, or surveying advice. Always confirm with your own surveyor, broker, and conveyancer before making decisions. MyPropertyScan is operated by BiteRight Ltd.