With the extension cost calculator you can get a quick free rough estimate of at least some of the costs involved in building extra room s for your house.
Flat roof extensions cost.
A screen can be added for an additional cost of 3 000 to 4 000.
For bay window roofs expect to pay from 350 900 and for dormer window roofs between 700 1 300.
Flat roof extensions cost from 700 lowest possible and can reach up to 3 000.
Ian jones north wales single garage fibreglass flat roof 2018 1500.
2nd storey loft extension flat roof firestone rubber epdm 6 5m x 3 5m 2018 3750.
These prices are for for a good quality extension.
About 15m 2 between 16 000 and 21 000 in total.
New plastic facia boards and guttering.
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.
For a standard quality extension the cost of build calculates to about 1 000 m 2 to 1 400 m 2.
In 2019 an estimate for the cost of a single storey extension is anywhere between 1 350 and 1 950 per m2.
At 1 580 per m2 of extra living space this model double storey extension project offers better value for money than the flat roof single storey extension.
The average cost for a patio roof addition using low maintenance wood patterned aluminum runs for about 6 000 to 10 000 for an area of 20 by 20 feet as of 2011.
However the overall cost of a two storey extension is greater.
More details can be seen in the table below.
Basic quality would naturally cost less and premium would be more.
Basement extension cost guide.
House extension cost calculator are you looking for more space or thinking of buying a house and extending it yourself.
Two storey side or rear extensions are more cost effective than single storey extensions coming in at around 1 320 to 1 620 per m for a standard build so with this budget you could extend by at least 35m sufficient space to add a large kitchen and or living room extension on the ground floor with two new bedrooms and a bathroom above.
In london and the south east this could be anywhere between 1 800 and 2 300 per m2.
Adding a wood lattice roof can range between 500 and 10 000.
Meanwhile an estimate for the build cost of a double story extension would be roughly double the single story quote.
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.
Epdm rubber asked for extra fall on roof to be made.