Check a London postcode before arranging a viewing

Finding a promising property listing is the start of a local investigation. Before arranging or preparing for a viewing, use its postcode to understand the available evidence about noise, walking destinations, recorded crime and nearby schools. Keep the map's limits separate from the questions only the property and its surroundings can answer.

The postcode mode in notbad reports all ten characteristics independently of your area-search filters. It does not create a combined property score or a recommendation to rent or buy.

Start with a representative point, then refine it

Open the magnifying glass in the map header and enter a full postcode. The same field also accepts London borough names. The app uses its saved OS Code-Point Open data, supplied in August 2026, with Royal Mail updates to 17 July 2026. It does not send the input to a remote geocoder.

A postcode represents several addresses. Its point is not necessarily the building you are considering, even when the source location quality is good. Some positions are explicitly approximate and the result will say so. A new, changed or missing code may not be found in the saved supply.

Use the map to refine the point for the surroundings you want to inspect. The report retains an action to return to the original postcode point. Noise samples refer to the selected point, while walking times describe an approximate starting area rather than a surveyed front-door route.

Read all the evidence, not just a colour

The report shows daytime and nighttime values for aircraft, road and railway noise when those sources provide a reading. An absent reading remains unknown; it must not be interpreted as zero or verified quietness.

Tube-track proximity is shown separately. Its approximately 100-metre setback is based on the user-selected cycling-permission map and mapped tracks, including some tunnels. It does not establish tunnel depth, measured noise or vibration inside nearby homes.

For stations, green space, schools, supermarkets and shopping, the report searches up to 30 minutes using all supported destination choices. Green spaces must have at least 2 hectares of mapped area. This is deliberately independent of a shorter walking budget or narrower selection in Explore.

Interpret recorded crime as an area comparison

Crime uses 24 months of published Metropolitan Police and City of London Police records, September 2024 through August 2026, compared with 2024 resident populations. The app derives five London-only bands, from 1 for the lowest recorded rate to 5 for the highest.

These are not official safety grades or a personal-risk forecast. Visitor and retail areas can have a high number of reports compared with their resident population. Anti-social behaviour, records without a usable location and the incomplete transport-police series are excluded. Missing area evidence remains unknown.

Use a band to understand this particular comparison, then look at its source date and limitations. Do not turn it into a label for everyone who lives in an area.

Keep school grades and admissions separate

The report uses the DfE school register dated 31 October 2026 and an Ofsted inspection snapshot dated 30 September 2026. It searches all school phases, both inspection schemes and schools without a linked grade.

Older overall grades and newer report-card grades remain separate. The new report-card area used by the independent report is Curriculum and teaching. The nearest displayed school can therefore have a grade that you would exclude from a particular exploration search.

Walking proximity does not establish catchment eligibility, admissions priority, an available place or current gate access. Check those questions with the relevant school and admissions information for the actual application.

Turn the report into a viewing checklist

Note the noise sources and periods worth listening for, the station and shop approaches you would use, the entrance to a useful park, and every result marked unknown or approximate. Walk the important routes and investigate the actual building and rooms.

If discussing the wider search with someone else, share its conditions and map area. The sharing feature excludes postcode input, the selected-place marker and this location report; it is designed for discussing requirements without automatically passing on a property location.

Sources

• OS Code-Point Open
• Police.uk data
• ONS population estimates
• DfE school register
• Ofsted inspection data
• Noise and walking sources are explained in their individual information panels and the related guides.

Practise with public examples first

The Harrow comparison includes a station reference with unresolved walking evidence, showing why a nearby symbol is not sufficient. The Waltham Forest retail example has an absent road-noise reading, and Tower Hamlets contains different aircraft coverage and crime areas across its three references. These are public catalog positions rather than private homes. Use them to learn how unknowns appear before checking a listing; the report profile is the same, but a real postcode still needs map refinement.