Single Floor Extension Cost

Overall cost of an extension.

Single floor extension cost.

Average cost to build an addition. For example a single story 25 square meter extension may cost 33 000 a two story timber extension will be around 53 000. Had 4 quotes ranging from 30000 to 48000 went with the cheapest quote. 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.

So 30 000 50 45 000 for the basic build cost. In london and the south east this could be anywhere between 1 800 and 2 300 per m2. The cost of using different materials like timber flat pack and glass will have an impact on the overall estimate. Tips to cut the cost of your extension.

The average cost to build a home addition or add a room is 48 000 with most homeowners spending between 22 500 and 74 000 a room addition costs from 86 to 208 per square foot depending on the room size materials labor location and if your building up or out. As of last year the estimated cost of a single storey extension outside of london fell anywhere between 1 200 and 1 500 per metre square. As a rule of thumb you can add 50 extra to the build cost of a single storey extension. Single storey kitchen dining room extension 25m 2 in total including fitting of kitchen 2 radiators move boiler 12 spot lights bi fold screen doors 3 velux windows full decoration all planning etc taken care of.

Add on 10 15 for professional fees architect planning application building regs structural engineer 6 750 at 15 vat 9 000 double storey house extension cost 60 750. In london and the south east the same work could cost you between 1 500 and 2 000 per metre square. If you have time consider being your own project manager. If it all depends how much does a single storey extension cost.

Double vs single storey extension costs. House extension cost calculator only valid for extensions from 12 square metres upwards. For example a single floor extension with timber will cost around 1 500 to 2 100 per m2 while one with vinyl will cost around 1 350 per m2. These prices are for for a good quality extension.

Please note that the above extension cost is indicative and your budget should not be relied upon as price will vary significantly for each individual project. Choose a simple design the most cost effective floor plan is square future buyers will appreciate neutrality too plan ahead as much possible. If you have good diy skills do some of the more basic work yourself. For a double story extension you should consider about 160 of the price for a single story extension of the same floor area.

Planning and building cost.