Flat Roof Extension Cost

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 extension cost.

This can range from 30k to 75k and above but this is dependent on many different factors such as the size of the flat roof extension. A typical conversion with a rear dormer in a mid terrace property costs around 35 000. Meanwhile an estimate for the build cost of a double story extension would be roughly double the single story quote. However given the nature of flat roof repair costs it can sometimes make sense to replace the entire roof.

Flat roof extension london. 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. 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. The cost will vary depending on size but you can expect to achieve this type of house extension for every budget between 30 000 and 50 000.

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 cost per square metre. Size a small roof will be more affordable than a large roof.

About 15m 2 between 16 000 and 21 000 in total. Flat roof extensions cost from 700 lowest possible and can reach up to 3 000. Basic felt solutions cost around 50 per square metre for the material itself and more high end materials such as modern grp a form of fibreglass going up to 90 per square metre. Average cost 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.

House extension cost calculator are you looking for more space or thinking of buying a house and extending it yourself. More details can be seen in the table below. Adding a wood lattice roof can range between 500 and 10 000. For a standard quality extension the cost of build calculates to about 1 000 m 2 to 1 400 m 2.