Short answer: Yes, but almost always only with listed building consent from the council, granted before any work starts. Permitted development rights for outdoor units do not apply to listed buildings. The systems that work best are low-level consoles and concealed ducted units, with outdoor units placed out of sight and pipe routes that avoid historic fabric.
Why consent is needed
Listed building consent is needed for any works that affect a listed building's character, inside or out. Fixing an outdoor unit, drilling through historic walls and running pipework across original features usually count. Carrying out works without consent can be a criminal offence, and councils can require the work to be reversed.
The law in each nation
In England, consent is required under the Planning (Listed Buildings and Conservation Areas) Act 1990. In Wales, the Historic Environment (Wales) Act 2023 applies. In Scotland, the Planning (Listed Buildings and Conservation Areas) (Scotland) Act 1997 applies, and in Northern Ireland the Planning Act (Northern Ireland) 2011. In every nation the application goes to the local planning authority.
Conservation areas
Homes in conservation areas that are not listed may still need planning permission for an outdoor unit, especially on an elevation facing a road. Placing the unit at the rear, in a garden or in a lightwell often avoids this, but check with the council.
Systems that suit period homes
Floor consoles sit low and can take the place of an old radiator, keeping cornicing and panelling clear. Ducted units hidden in a loft or ceiling void leave only a slim grille. Pipework can sometimes follow existing service routes, such as floor voids, to avoid new holes in historic walls.
What to include in an application
Drawings showing the indoor and outdoor unit positions, the pipe route and the wall penetration, photos of the affected areas, product data with dimensions and noise levels, and a short heritage statement explaining why the approach minimises harm. We supply the technical parts for you.
Related services
Sources
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Reviewed October 2026. Rules and prices change; check the date and ask us if anything is unclear.