Fornax Guide to Heat Pumps Planning Regulations

In England, most heat pump installations are considered "permitted development." This means you can typically go ahead with your heat pump installation without the need for planning permission.

However, there are some exceptions to consider that generally trigger a need for planning permission:

1. Listed Property - If your home is listed as a historically significant building, you may require planning permission for alterations, including heat pump installations.

2. Conservation Area - If your property is located within a conservation area, special rules may apply. Check with your local authority.

3. Size of Heat Pump Unit - For air or ground source heat pumps, if the unit is larger than 0.6 cubic meters, you might need planning permission.

4. Proximity to Neighbors - If you plan to position the heat pump within 1 meter of your neighbor's property or your property boundary, you might require planning permission.

There are also some additional criteria that might mean you need planning permission. These include:

• Installation being above the ground storey when facing a road.

• The heat pump being used for cooling as well as heating.

• The installation not following Microgeneration Certification Scheme (MCS) standards.

• Multiple heat pump unit being installed.

In rare cases, local authorities may impose "article 4 directions" restricting heat pump installations in specific areas. Check with your local authority for any such restrictions. 

I think I might need planning permission - what next?

Ok, so you think you might need planning permission. The first thing to know is that this is no cause for concern - in most cases the process will be straightforward and take just a few months. FORNAX (or another installer you are working with) can help you with much of what is required.

Tips before you get started:

• Consider hiring a planning consultant, especially for listed properties.

• Take internal and external photos ready to share with your experts.

• Check with your electricity provider whether an electrical fuse upgrade is required.

Documents You'll Need to Make to a Planning Application

If it appears you might need planning permission, be prepared to provide (or for your installation partner to provide) the following documents:

1. System Design - From your installer, including details about the heat pump system to be installed (including the technical specifications, and a manufacturer’s brochure).

2. Noise Assessment - To show that the noise level when operating will be within acceptable limits.

3. Site / Location Plan - Illustrating your home's location. If you don’t have one of these, you can download it from this website for a small fee

4. Land Ownership Certificate - Confirming ownership or notice to all owners and tenants.

5. Elevation and Floor Plans - For listed properties, showing the location of the heat pump relative to the property.

Where can I find out more?

At FORNAX, we deal with planning permission for heat pumps every day. If you think you might need planning permission, download our comprehensive planning permission guide for a more detailed breakdown and expert advice. If you're unsure, it's essential to consult with experts or your local authority, and consider hiring a planning consultant, especially for listed properties.