Noise, actually measured.

What "statutory nuisance" means

Section 79 of the Environmental Protection Act 1990 defines statutory nuisance as any noise emitted from premises — or from a vehicle, machinery, or equipment in the street — that is prejudicial to health or a nuisance (citing Environmental Protection Act 1990 §79). Local authority environmental health departments have a duty to investigate complaints that may constitute statutory nuisance and, where satisfied, must serve an Abatement Notice under section 80.

Abatement Notices require the person responsible to cease or restrict the noise activity within a specified period. Failure to comply without reasonable excuse is a criminal offence under section 80(4), with fines of up to £5,000 for domestic premises on summary conviction. A pattern of Abatement Notices at a neighbouring address is a material fact that a buyer would want to know — though it is not automatically disclosed on the seller's property information form.

The Noise Act 1996 — night noise offences

The Noise Act 1996 gives local authorities additional powers to deal with excessive noise from dwellings during night hours (11pm to 7am). Under section 2, where a local authority officer reasonably suspects that excessive noise is being emitted from a dwelling during night hours, a Warning Notice may be served (citing Noise Act 1996 §2). If the noise continues after a Warning Notice, the local authority can issue a Fixed Penalty Notice of £100 or bring criminal proceedings.

The Noise Act 1996 powers are primarily reactive — they respond to complaints rather than proactively monitoring noise levels. Data on Warning Notices served at specific addresses is held by local authorities and is obtainable by Freedom of Information request, though it is not routinely published.

Accessing noise complaint history via Freedom of Information

The Freedom of Information Act 2000 gives any person the right to request information held by public authorities, including local authority environmental health complaint records (citing ICO Freedom of Information Act 2000 guidance, published by the Information Commissioner's Office). A well-framed FoI request to the relevant district or borough council can reveal the number and nature of noise complaints recorded for a specific address or postcode sector over a specified period.

Councils are required to respond within 20 working days. Personal data about individual complainants is exempt from disclosure, but aggregate complaint data and Abatement Notice records are not. For a property where noise risk is a primary concern, a pre-exchange FoI request is a low-cost investigative step. WhatDoTheyKnow.com publishes thousands of previously answered FoI requests relating to noise at specific addresses.

Airport and railway noise — DfT contour maps

The Department for Transport publishes aircraft noise contour maps for Heathrow, Gatwick, Stansted, and other major airports. These show the 57 dB LAeq 16-hour contour — the level above which the government considers properties to be significantly affected by aircraft noise — and are updated annually as flight patterns and aircraft types change (citing DfT Strategic Noise Map England, updated annually from Civil Aviation Authority flight data).

For properties within a major flight path, the noise profile varies dramatically with wind direction — most airports use westerly runways in the UK, which concentrates departures and arrivals over specific ground tracks. A property directly under the final approach path to Heathrow experiences significantly different noise from one half a mile to the side, even at the same distance from the airport.

Railway noise is covered by DEFRA's strategic noise maps for major railways — those carrying over 30,000 trains per year. For properties within 200 metres of a mainline or suburban railway, the DEFRA round 4 mapping provides noise level estimates by time of day (citing DEFRA Strategic Noise Mapping Round 4, 2022, published under the Environmental Noise Regulations 2006).

Road traffic noise — DEFRA strategic mapping

DEFRA's Round 4 Noise Mapping (2022) covers all major roads carrying more than 3 million vehicle movements per year (citing DEFRA Round 4 Noise Mapping 2022, Environmental Noise Regulations 2006 implementation). The maps show Lden (day-evening-night weighted average) and Lnight contours at 5 dB intervals from 45 dB upward.

A property with an Lnight above 55 dB is considered by the World Health Organisation to be at risk of sleep disturbance and associated health effects. Properties on or near motorways, A-roads, and major urban arterials will typically fall into this category. The maps do not cover local roads below the threshold, so street-level ambient noise from residential streets is not captured in the published data.

Industrial and entertainment noise — premises licensing

Venues licensed to sell alcohol or provide regulated entertainment are recorded on the local licensing authority's premises register, maintained under the Licensing Act 2003 (citing Licensing Act 2003, Part 3 — premises licensing requirements). The register is publicly searchable and shows the conditions attached to each licence, including permitted operating hours and noise management conditions.

A pub, nightclub, or event venue within 100 metres of a residential property can generate significant noise during licensed hours. The proximity of licensed premises is particularly relevant for ground floor flats and properties on high streets. Eavesdrop checks the premises licence register for addresses within a defined radius and flags licences with late-night operation permissions.

What Eavesdrop checks

For every property report, Eavesdrop checks: DEFRA Round 4 strategic noise contours for road, rail, and industrial sources by UPRN; DfT aircraft noise contour data for major airports within 30 km of the property; overflight path proximity using published flight track data; and premises licence register proximity for licensed late-night venues within 150 metres. Where noise exposure is elevated against published thresholds, the report names the source data and the specific noise indicator value.