First Floor Extension Costs Uk
The standard of specification you choose will have an enormous influence on the build cost.
First floor extension costs uk. The cost of a timber frame extension is accepted as being less than a traditionally built extension primarily because there are fewer labour hours involved. Double vs single storey extension costs. For two storey extensions add 50 to the cost of a single storey extension. London extension costs per m.
The build it estimating service gives a total cost of 63 205 for our 40m2 double storey extension we ll be on site for 13 weeks and it will be more difficult to live in the house during the works so we may need to pay for rental accommodation. On average an excellent finish is 40 more than a standard finish. How much does a single or two storey extension cost. In london and the south east the average cost per m2 is around 1 500 2 000.
Many sources claim that a second storey will be priced at only half or two thirds of the cost of the first floor so if the single storey extension is 20msq and costs 22 000 the second floor could be an additional 11 000 for a total of 33 000. The timescale required to build it is also more predictable with it being less dependent on good weather conditions particularly if the works are being carried out in the winter months. This would mean you could build an extension with a floor area of 27sqm per floor. The ground floor would cost between 43 000 54 000 and the first floor would likely be between 27 000 35 000.
By entering information about the extensions external size roof type number of storeys and the uk location an estimate of the building cost can be found. House extension cost calculator are you looking for more space or thinking of buying a house and extending it yourself. Well before you go dreaming of sky lights and kitchen islands take a look at our house extension cost calculator below to determine how much you may expect to pay for the labour costs in england and wales. For example if you re looking to add a kitchen extension then you should add 3 000 10 000 to your costs.
Depending where you are in the uk the cost of a straightforward extension should allow for around 1 000 2 000 m. The average cost per m2 for an extension outside of london is between 1 200 1 500.