How Much Does a Side and Rear Extension Cost?
The cost of a house extension can vary, particularly in London. There is no set cost for a side and rear extension, as the final estimate can depend on the property size, extension type and roof type.
For instance, a Plus Rooms medium side and rear extension with a pitched and flat roof has an estimated cost of £85,000.
If you have a budget in mind, our extension cost calculator shows the average cost for all the different types of extensions Plus Rooms has to offer. The cost for each type of extension is accompanied by a 3D model, so you can begin to build a picture of your ideal extension.
All of our estimated costs for our extensions include construction costs, plumbing and electricity, glazing and external doors and applicable VAT.