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Property Risk Check for One Address

The property risk check screens one address in England against the Environment Agency's flood maps and LiDAR ground heights, police.uk crime, the English Indices of Deprivation 2025 and HM Land Registry sales. It gives a screening band for each peril, shows the Environment Agency's own figure beside ours where they differ, and dates every source.

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The property risk check for SW1A 2AA: Bozmaps screening bands for river and sea flooding (medium, raised from the Environment Agency's very low because the address is in flood zone 3), surface water (low), reservoir flooding (in extent), ground (level or gentle, low-lying) and crime (average).

What You Give It

  • A postcode or a street address. A postcode is placed at its centre point.
  • For the exact building, click it on the property finder map: the same check runs for that spot.

What You Get

  • Five Screening Bands

    River and sea flooding, surface water flooding, reservoir flooding, ground and crime, each with a one-line reason.

  • Flooding in Detail

    The flood zone, the Environment Agency's likelihood with defences at the address and within 20 m, surface water likelihood, the distance to flood zone 3 when the address is outside it, and whether it is inside the wet-day or dry-day reservoir flood extent.

  • Ground and Slope

    Height above sea level and slope at the address from Environment Agency LiDAR, how much of the ground within 150 m is lower, and the height against the middle of its surroundings.

  • Crime, Deprivation and Sales

    Crimes recorded within 250 m over the latest 12 months, by type; the neighbourhood's deprivation decile and domains; and the homes sold at the postcode over 24 months with their median price, beside the median for the postcode sector.

  • Nearby Places and Designations

    The nearest rail station, tram or metro stop and primary and secondary school, and whether the spot is in a conservation area, Article 4 direction area, green belt, tree preservation order area, National Park or National Landscape, or within 25 m of a listed building.

  • A Plain-English Summary With Sources

    A short summary written from the figures, and every source with its publisher, licence and the date it was read.

How It Works

The check reads each public service for the point you give, then applies a short set of written rules to turn the figures into screening bands. The rules travel with every result, so anyone can see why a band was given.

How the Bands Are Set

PerilRule
River and sea floodingStarts from the Environment Agency's likelihood with defences at the address (high, medium, low or very low). Raised to medium if the address is in flood zone 3, which ignores defences, and the likelihood is lower. The Environment Agency's own figure is then shown beside the band.
Surface water floodingThe Environment Agency's likelihood at the address. Outside its high, medium and low areas the band is very low, as on GOV.UK's Check your long term flood risk service.
Reservoir floodingIn extent or not, for the wet-day and dry-day reservoir flood extents. A reservoir failing is an unlikely event.
GroundSlope at the address: under 5% level or gentle, 5 to 10% moderate, 10 to 20% steep, over 20% very steep. Low-lying when less than 20% of the ground within 150 m is lower than the address.
CrimeThe neighbourhood's crime decile in the English Indices of Deprivation 2025: 1 to 2 high, 3 to 4 above average, 5 to 6 average, 7 to 10 low. Police counts within 250 m are shown alongside.

What the Environment Agency's Likelihood Bands Mean

  • High: more than a 3.3% chance of a flood each year.
  • Medium: between 1% and 3.3% each year.
  • Low: between 0.1% and 1% each year.
  • Very low: less than a 0.1% chance each year.

When Data Is Missing

'Not shown at risk' for rivers and the sea means the address is outside every area in the Environment Agency's likelihood data; it is not a guarantee. When data.police.uk is missing months for the police force, the check names the months, counts only what is published and gives no crime band or yearly figure. On 9 November 2026, Greater Manchester Police had no street-level crime on data.police.uk at all. When a service does not answer, that part says it was not checked instead of showing a clean result.

A screening from national open data, not an insurance rating, a valuation or a survey.

SW1A 2AA, London

A check on 9 November 2026 gave river and sea flooding a medium band: the Environment Agency's likelihood with defences was very low, but the address is in flood zone 3, so our rule raised it. Surface water was low and the address is inside the wet-day reservoir flood extent. The ground is level or gentle, about 3%, and low-lying, with only 18% of the ground within 150 m lower. The crime decile was 5 of 10, average.

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The Data Behind It

Every dataset and its credit line is on data sources and licences.

What It Can't Tell You

  • England only for flooding, ground, deprivation and designations; crime and sales also cover Wales. Scotland and Northern Ireland are not covered.
  • Groundwater, sewer flooding and subsidence, including shrink-swell clay and mining, are not covered.
  • A postcode is placed at its centre, which can be tens of metres from the building.
  • police.uk moves each crime to a nearby anonymous map point, so counts within 250 m are close, not exact.
  • Not an underwriting model: there is no claims history, building construction or sum insured.
  • Street addresses are looked up in the EPC register; where that service is not connected, search by postcode.

The tools are in preview: built and tested, not yet signed off as validated. They screen a place from public data and don't replace a survey or professional advice.

Questions

Something else? Ask us.

Why is our band medium when the Environment Agency says very low?

Because the address is in flood zone 3. Flood zone 3 ignores defences, so our rule raises the river and sea band to medium when the likelihood with defences is lower. The result shows the Environment Agency's own figure beside our band, so you see both and can judge the defences yourself.

Is this the same as GOV.UK's long term flood risk service?

It reads the Environment Agency's 2025 national likelihood data for rivers, the sea and surface water, and follows GOV.UK's Check your long term flood risk service in calling surface water 'very low' outside the mapped areas. It adds flood zones, reservoirs, ground height, crime, deprivation and sales, and our screening bands.

Why is there no crime band for some addresses?

Because the police force has months missing on data.police.uk. An incomplete count gives no fair yearly figure, so the check names the missing months, shows the counts it has and gives no band, yearly figure or crime decile.

Can I check a property in Wales?

Partly. Crime and sales work in Wales. The flood maps, LiDAR heights and deprivation index come from English publishers, so those parts say they are not covered. Natural Resources Wales publishes the Welsh flood map.

Can I check a list of addresses?

Yes, with portfolio screening: up to 200 addresses from one CSV file, with a lighter version of the same flood, crime and deprivation checks.

Is the result advice?

No. It is information only, not insurance, lending, financial, legal or surveying advice. It tells you what national open data says about a point, so you know what to ask a surveyor, insurer or lender.

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