Basingstoke: air conditioning planning permission

Since 2025-05-29, England's permitted-development rules let a house fit an air-to-air heat pump - which heats as well as cools - without a planning application in many cases, within set size, siting and noise limits. A cooling-only air conditioning unit does not get that route and needs a full planning application in Basingstoke whatever the property, because on its own it only cools.

Picking a system in Basingstoke therefore decides your planning path as much as your comfort. A unit that heats and cools opens up the permitted-development route on a house; one that only cools never does. Conservation-area coverage in Basingstoke is genuinely low (around 9% of EPC-certified homes), so for most addresses an external unit is a lower-friction proposition than in a heritage-dense borough - an honest advantage, not a workaround.

Flats are the sharpest exception here as everywhere in England: the permitted-development right for an outdoor unit sits with the house, not the flat, so a Basingstoke flat will usually need both freeholder or managing-agent consent and planning permission.

Planning is more straightforward in Basingstoke than in a lot of the country: only around 8.6% of properties sit inside a conservation area, so most houses can use the permitted-development route for an outdoor unit. Flats are still treated differently, and will usually need Basingstoke and Deane Council's planning permission for a front or side unit.

Of the 49 planning applications mentioning air conditioning or other cooling plant that Basingstoke and Deane has decided - every development type, of which 16 were householder applications - 95.9% were approved.

In counts rather than proportions that is 47 approvals against 2 refusals.

We do not publish a separate householder approval rate for Basingstoke and Deane: at 16 decided householder applications the sample is too thin for a percentage to be a fair guide.

The match is on the wording of each application, so this counts applications that mention cooling equipment rather than every cooling installation Basingstoke has seen.

Separately, and as a genuinely different question: Basingstoke and Deane has decided 50 applications mentioning an air-source heat pump, approving 98% of them. Most air-source schemes are about heating rather than cooling, the two sets overlap wherever an application mentions both, and the counts are never added together.

What actually gets refused, and what councils attach when they approve, is a national picture rather than a local one at the volume of officer reasoning currently published. We set both out with their sample sizes: why cooling applications get refused and the conditions councils attach.

You can also compare what each council decides, where enough decisions exist to publish a figure.

Background noise in Basingstoke sits around 42 dB across the property types we profile during the day, which is the level any outdoor unit has to live inside. A machine that is inaudible on a busy street can be the dominant sound in a still garden, so the local baseline changes the answer.

That makes placement the thing to get right: distance from a neighbour's window, and distance from the boundary, do more for an application than the specification of the unit itself.

None of this is a dealbreaker: councils in Basingstoke approve outdoor units for homes like these all the time. Around 8.6% of local properties sit inside a conservation area, so it is a step to plan for rather than a formality. Being close to a listed building - around 2.3% of homes here sit within 30 metres of one is not the same as your home being listed, and public data can flag conservation status without settling it. This is indicative guidance, not legal advice: confirm the final position with your Local Planning Authority before you install.