Noise and House Prices

How Much Does Noise Reduce House Prices?

Environmental noise can reduce what a property is worth. How much depends on the noise source and how severe it is. As a rough guide, the sources buyers react to most strongly are:

Noise Source	Typical impact on value	Notes
Airport flight path (under approach)	High	Greatest effect directly under low-altitude approach paths
Motorway (within 200m)	Moderate to high	Constant traffic noise, worse without acoustic fencing
Railway line (adjacent)	Lower to moderate	Intermittent, often less off-putting than constant road noise
Busy A-road	Lower to moderate	Depends on traffic volume and hours
Commercial/industrial	Varies	Depends heavily on type, hours and proximity

As a rough rule of thumb, the effect grows as noise rises above around 55 dB. It varies significantly by location, though: in highly desirable areas (e.g. central London), buyers often accept more noise for the benefits of the location.

What Property Surveys Check

When buying a property, noise is assessed at several stages:

• Environmental search: identifies proximity to major roads, railways, and airports. Part of standard conveyancing searches.
• RICS home survey: the surveyor will note audible noise sources during the inspection and may comment on potential impact.
• EPC report: while primarily about energy, the EPC may note window types (single vs double glazing) which affects noise insulation.
• Local authority search: reveals planned infrastructure (new roads, railway lines, airport expansion) that could affect future noise levels.

Tips for Buyers

1. Visit at different times: noise varies by time of day. Visit during rush hour, at night, and on weekends to get the full picture.
2. Check flight paths: use our flight path checker before viewing properties near airports.
3. Research planned infrastructure: new roads, HS2, airport expansion can all change noise levels significantly.
4. Factor in soundproofing costs: if you like a property in a noisy area, budget £2,000-5,000 for secondary glazing and other measures.
5. Negotiate on price: if noise is an issue, use the points above to negotiate a reduction that covers soundproofing costs.

Selling a Noisy Property

If you're selling a property in a noisy area, investing in soundproofing before sale can increase the value by more than the cost of the work. Secondary glazing is particularly good value — it typically costs £100-300 per window but can add significantly more to the sale price by demonstrating that the noise issue has been addressed.

Related Guides

• Soundproofing guide: practical solutions to reduce noise and protect property value
• Flight path checker: airport noise is the biggest price reducer
• Motorway noise: affected postcodes by motorway corridor
• Railway noise: mainline and freight noise by postcode
• Decibel guide: what dB levels mean and WHO guidelines
• How to report noise: your legal rights