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Do I need planning permission to extend my front porch to add a downstairs toilet?
It is likely that you will require planning permission to extend an existing front porch to add a toilet.
Adding a porch falls within permitted development rights meaning an application for planning permission is not required provided specified limits and conditions are met. However, to fall under permitted development rights for a porch, the total ground area must not exceed three square metres. This is unlikely to be enough room to fit toilet and the required additional components.
Read the full rules for porches under permitted development on our mini guides.
If your porch exceeds these limits, it will be classified as an extension. These can be permitted development but come with a different set of rules.
Extensions are not permitted development if they are built forward of the ‘principal elevation’ of the house. As such, you will be required to submit an application for planning permission to your local planning authority.
If you live in a listed building, you will need listed building consent for any significant changes.
Common Questions
The principal elevation is the most visible or prominent side of a structure, typically facing a street or public area. While often considered the 'front' of the building, it may not always contain the main entrance. There can only be one principal elevation of a house.
Deconversion is the process of restoring a previously subdivided house back to its original state as a single property. Merging flats to create a single house may require planning permission, so you should discuss proposals with your local planning authority before starting work.
Read more about converting flats back to a house.
In many circumstances, rules known as ‘permitted development’ rights allow you to extend a house without needing to apply for planning permission, providing specific limitations and conditions are met. If you want to exceed these limits and conditions, then it is likely that an application for householder planning permission will be required.
You can find information about the limits and conditions, prior approval and the building regulations on the Planning Portal by using the links below.
Read about planning permission for extensions
Read about prior approval for larger single storey extensions
Find out about building regulations for an extension
Under the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended), you have a general permission to install an antenna up to a specific size on property without the need for planning permission. This general permission depends on your house type and area. Your local planning authority can give you more advice.
Balconies, verandas and raised platforms will often require planning permission as they do not fall under permitted development rights.
An exception to this is Juliet balconies which do not have any external access or platform, allowing them to be classed as permitted development.
A raised platform of under 0.3 metres is also allowed without planning permission, this may be an area with slightly raised decking.
When applying for planning permission for a balcony it is important to consider your neighbours privacy and garden. The features and location of the property may have a significant impact. If the building is listed or in a conservation area, then this may have a bearing on any decisions.
