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Single storey rear extension cost

We are looking to do a single storey rear extension dimensions are 4m x 7.5m we'd require a pitched roof with 3 velux windows, double patio doors and 2 windows. No kitchen or bathroom required. Knock through the kitchen to make a through room approx 2.5m across. We would need to build over a sewer access grid approx 5ft deep. Can anyone give me an idea of reasonable cost for this?
We're in stockport, South manchester.

3 Answers from MyBuilder Extension Builders

Best Answer

Depends on where you live but I would expect this to cost 30k

A lot depends on the ground conditions and what footings will be required.


Answered 26th Jan 2015

Hi..Difficult to say without seeing the actual property and its current construction, etc. But as a rough guide £150 per square foot should give you an estimated cost for the build. But it obviously depends on your final specification and finishes, etc....



Answered 26th Jan 2015

As above it depends on location.
But as there are no real internal works to speak of, then 20k would be a more realistic price, again depending on footings.
Also is it brickwork or block and render?


Answered 28th Jan 2015

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