Chimney Planning Permission Back to Blog

Chimney Planning Permission

Chimney Planning Permission

If you are planning to carry out any work on your existing chimney or flue, you can do so without planning permission, so long as your house is not listed and that you follow certain conditions. Chimney and flue work are considered to be permitted developments, these rules apply to houses and maisonettes. In the case of flats, you will have to seek planning permission in most cases.


Fitting, altering or replacing an external chimney, flue or vent pipe is considered to be a permitted development. Therefore, house owners do not have to seek planning permission for chimney work, so long as the following conditions are met:

  1. Flues, chimneys and vents on the rear or side elevation of the house must be no more than one metre higher than the highest point of the roof.
  2. In designated areas, any fitted flue must not be on the principal or side elevation that fronts a highway.


For any exterior work that is to be carried out on a flat it is likely that you will need to seek planning permission. If your flat is part of a listed property, then you will also need to seek listed building consent. If you plan on extending your flat’s roof space, to accommodate a new flue or otherwise, you will require planning permission as well as written approval and consent from your landlord, freeholder or management company.


Maisonettes follow the same basic conditions as houses, which means that any new chimney, flue or vent pipe must be no higher than one metre above the highest point of the roof. In designated areas, a maisonette must not have a chimney, flue or pipes on the principal or highway facing part of the maisonette.

Listed buildings

If you live in a listed building, you should consult with your Local Planning Authority before undertaking any chimney work. Although you will still quality for permitted development, you should seek guidance on any rules that you may have to follow.

For more information on building flue, chimney or soil and vent pipes, please visit The Planning Portal.


The information contained within this article is strictly for guidance only.  Cost2Build recommends that you always check current sources of information in case regulations have changed. Cost2Build cannot accept any liability for miscommunication of the law in the case of a change in regulation or any action done to a property based on the information held in this article.

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