Do Flues, Chimneys, or Soil and Vent Pipes Require Planning Permission?

When you plan to install, modify, or replace an external flue, chimney, or a soil and vent pipe on your property, you'll generally find that you don't need to apply for planning permission. This is because such work is usually classified as 'permitted development', meaning it's pre-approved, provided you adhere to specific criteria.

When Your Project Won't Need Planning Approval

You can typically proceed with your work without submitting a planning application if your proposed flue, chimney, or soil and vent pipe meets both of the following conditions:

• **Location:** You must install it on the rear or a side wall (elevation) of your building.

• **Height Restriction:** It cannot extend more than one metre above the highest part of your roof structure.

Special Planning Rules for Listed Buildings and Designated Areas

If your property is a listed building, or if it's situated within a designated area (such as a conservation area or an Area of Outstanding Natural Beauty), you must always contact your local planning authority. We advise you to do this before starting any work, even if you believe your project falls under permitted development rights. Furthermore, if you are in a designated area, you are strictly prohibited from fitting a flue on the principal (main front) elevation or any side elevation that directly faces a public highway.

When Planning Permission Is Always Required

The permitted development rules we've discussed usually apply to standard houses. However, you will definitely need to seek formal planning permission if your property falls into one of these categories:

• **Flats and Maisonettes:** All types of flats and maisonettes are excluded from these permitted development rights.

• **Certain Converted Properties:** If your house was created through specific 'permitted development' rights, particularly those related to:

  • 'Changes of use' (as detailed in Schedule 2, Part 3, Classes G; M; MA; N; P; PA and Q).

  • 'New Dwellinghouses' (as detailed in Schedule 2, Part 20).

• **Other Building Types:** Any building that is not a house (e.g., commercial properties, industrial units).

• **Restricted Locations:** In areas where a specific planning condition, an Article 4 Direction, or another local planning restriction is in place that limits your permitted development rights.

Official Guidance for More Information

For a complete and detailed understanding of how permitted development rules might apply to your unique circumstances, we strongly advise you to read the government's official technical guidance document:

Permitted Development Rights for Householders – Technical Guidance