Camden: 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 Camden whatever the property, because on its own it only cools.

Picking a system in Camden 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. Around 56% of Camden's EPC-certified homes sit inside a conservation area (Redington Frognal, Alexandra Road, Fitzroy Square among them), so checking the exact boundary before siting an outdoor unit is the single most useful planning step here.

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 Camden flat will usually need both freeholder or managing-agent consent and planning permission.

With around 55.8% of Camden's properties sitting inside a conservation area - Redington Frognal, Alexandra Road and Fitzroy Square among them, this is one of the areas where the permitted-development route for a house is most often unavailable, and a street-facing outdoor unit will usually need the London Borough of Camden's planning permission.

Of the 22 planning applications mentioning air conditioning or other cooling plant that Camden has decided - every development type, of which 5 were householder applications - 100% were approved.

Put as counts: 22 went through, 0 did not.

There is no householder-only percentage here, deliberately. 5 decided householder applications is not enough for a rate to mean anything, so the count is all we will state.

Read 22 as a floor, not a total: the deep historical backfill has not yet covered Camden, so earlier decisions are missing from it.

These are applications whose own description names cooling equipment. An application that installed the same kit but described it as external plant is not in the Camden count.

A different question, kept separate on purpose: 96.3% of the 27 applications mentioning an air-source heat pump that Camden has decided were approved. Air-source usually means a heating scheme, not a cooling one, and an application can sit in both sets, so the two figures are never summed or averaged.

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 Camden sits around 48 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.

Nothing here is a dealbreaker. Camden's council approves outdoor units for homes like these routinely. Conservation-area coverage locally runs at around 55.8%, which makes this worth planning for rather than assuming. Proximity to a listed building - around 14.1% of homes here sit within 30 metres of one does not mean your own home is listed, and public data can flag a conservation-area question without answering it. Treat this as indicative guidance, not legal advice, and confirm the final position with your Local Planning Authority before installing.