Cost Calculator 2018: How much will it cost to extend your home?

If you are thinking of extending your home, get a grasp on the likely costs with our free extension cost calculator tool

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This free tool will estimate how much it is likely to cost to build an extension. Answer a few simple questions, including where you live, the kind of extension you’d like to add, and how much of the work you’d like to do yourself, and it will provide you with an instant, accurate result telling you how much your finished project should cost.

How much does a home extension cost?

There are many factors involved in costing an extension project, from the size of the project right down to the quality of the paint you use on the walls. For a basic breakdown of average extension prices, follow these guidelines:

You must approach several builders and get full quotes for the proposed extension. Each builder will have different circumstances that will effect their quote, even though the materials and work won’t change. Approaching only one or two builders could give you an idea of a false average building cost.

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