Planning permission is not normally required for installation or replacement of a boiler or heating system if all the work is internal, though if you live in a listed building you should check with your local planning authority.
If the installation requires a flue outside, however, it will normally be permitted development if the conditions outlined below are met.
- Flues on the rear or side elevation of the building are allowed to a maximum of one metre above the highest part of the roof.
- If the building is listed or in a designated area even if you enjoy permitted development rights it is advisable to check with your local planning authority before a flue is fitted. Consent is also likely to be needed for internal alterations.
- In conservation areas, World Heritage sites, national parks, areas of outstanding natural beauty, and the Broads the flue should not be fitted on the principal or side elevation if it fronts a highway.
Additional rights are also available for installations of flues relating to biomass and combined heat and power systems.
If the project also requires an outside building to store fuel or related equipment the same rules apply to that building as for other extensions and garden outbuildings.
Disclaimer - Wales
This is an introductory guide and is not a definitive source of legal information. This guidance relates to the planning regime for Wales. Policy in England may differ. If in doubt contact your Local Planning Authority.