What is a Side Return Extension
A side return extension is slightly different from a standard side extension, it fills in the void between the main property and the L-section at the rear of the house.
House Extensions London » FAQs
A side return extension is slightly different from a standard side extension, it fills in the void between the main property and the L-section at the rear of the house.
Rear Extension, Side Return Extension, Wrap-Around Extension, Single-storey extensions, Double-storey extensions, Glass Extensions, Kitchen Extensions, Conservatories
Yes, you will need planning permission for a double storey extension from your local building authority. There are no permitted development regulations for double storey extensions. It is unlikely that you will be able to have a double storey extension if your home is in a conservation zone.
A double storey extension will cost approximately £40k more than a single storey extension. This will vary based on the size of the extension and the choice of fittings, including glazing. The current cost of materials will also influence the cost heavily.
The cost of a double storey extension depends on the size of the extension. Your local planning authority, typically the local council, will decide how big your extension can be, and this will dictate a rough cap to the cost for your extension project.
Due to the quantity of materials needed, a double storey extension is more expensive than a single storey extension. The average double storey extension will add an additional £40k to the ground floor extension cost, but this depends on the size of the extension.
A two-storey extension will always require planning permission and will depend on the location of your home. Your local building authority will ultimately decide if you can have a double-storey extension. It is unlikely to be permitted in a conservation area.
A double storey extension is an extension to the property of two levels. Typically, this extension will create an additional room on the ground floor of the house, with a new room being built directly on top of it, connecting to the rest of the first floor.
A side extension would take approximately 12 weeks to be constructed, not including additional time for material delays or planning and paperwork. You can expect the planning stage to take approximately three months, not including the time to obtain a Party Wall Agreement.
A side return extension can add value to your property, but it depends on the location of your home and local preferences. You can speak to a local estate agent who will be able to compare the value of local houses with and without side extensions.
Simply Extend, Simply Loft and Simply Basement are part of the Simply Construction Group.



