How much does an extension cost?
There are lots of factors that’ll impact your extension costs - how far you’re going to build up and out, the quality of the build that your budget can stretch to and how much involvement you’ll have in managing the project.
Consider how specification will affect your extension costs.
Depending on where you arena the UK, the cost of a straightforward extension should allow for around £1000 - £2000/m2. The standard of specification you choose will have an enormous influence on the build cost. On average, an excellent finish is 40% more than a standard.
How much does a single storey extension cost?
Expect to pay roughly…. • Basic quality: £1000 to £1680/m2 • Good quality: £1680 to £1920/m2 • Excellent quality : £1800 to £2500/m2 or more.
How much does a two story extension cost?
Expect to pay roughly…. • Basic quality: £1320 to £1620/m2 • Good quality: £1620 to £2000/m2 • Excellent quality:£2000 to £2500/m2 or more
BALANCE THE AMOUNT YOU ARE WILLING TO SPEND ON YOUR EXTENSION WITH THE ESTIMATED VALUE IT WILL ADD TO YOUR HOME.
Don’t forget the other factors
There are many variables that will affect how much your extension will cost, such as: • soil type (which affects the foundations) • what the extension will be used for (and how much it will cost to fit it out) • how much glazing you plan to specify • size (it gets slightly cheaper per unit area as the size increases)
All information correct at time of publication May 2020
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