At Evis Build, we know you will have questions about your proposed extension and will need house extension advice from house extension professionals. We hope that some of your questions will be answered in this house extension guide which features a list of frequently asked questions and their accompanying answers. Please click on the question to display the answer.
Third party involvement with house extensions
Do I need planning permission for an extension?
Depending on whether you will want us to build your house extension at the side or the rear of your existing home, and whether it will be a single storey or multiple storey, there are a couple of factors to consider in whether you will require planning permission. Please see our separate guide to planning permission for house extensions for full details.
Do I need building regulation approval for an extension?
All side, rear, single and multiple storey extensions will require building regulations approval from your local authority.
Do I need to inform my home insurance company once you complete my extension?
Your insurer should be made aware of the additional space within your home so that it is covered by your policy.
The work involved with an extension
How much does an extension cost?
The average cost of building an extension in the UK is £27,000 for a single-storey rear extension measuring 20 square metres in ground floor area. A 20 square metre two-storey rear extension would usually cost in the region of £43,000. Although this is an average extension cost for the UK, extensions do vary significantly in their dimensions and specification and there are a couple of variables which will determine your total house extension cost. Please see our separate guide to the cost of house extensions for full details.
How long does an extension take to build?
The average extension will take four weeks to complete but is dependent upon your ground conditions, access and the fixtures which are required (e.g. kitchens).
If you have any further questions in regards to your house extension in Surrey, London or Kent or would like a fixed price quotation for us to create your new space, please feel free to contact us and arrange a free home visit.