I'd just like to know how much and up and down side extension 12ft wide and 25 ft long could cost (and just a very rough figure). This extension is to make my house wider and add two top bedrooms and a downstairs reception.
Please, remember I just want a rough figure for an economical extension. What's the cheapest I can expect to pay? I already know I'd need planning permision.
TH
£1K per square metre of generated room size is a rough approximation
AWEM
A common costing nowadays is £1000 per square metre for carcass building. £1500 per square metre for finished 'liveable' rooms. £2000 for quality fittings.
Which (for 2 floors) comes in at £50,000 for the shell £75,000 for finished rooms £100,000 if you want top notch fixtures, fittings and furniture.
These are ballpark figures and assume little or no DIY content.
Thank you!
Why is it double for 2 floors? I'd have thought a large part of the cost is the floor/roof/foundation, and the extra skin of brick/openings wouldn't double the cost. Maybe factor 1.5 to account for scaffolding?
Rob
... feels faint ...
Mary
You also have to consider deeper foundations, 2 lots of ceilings and floors, twice as much plastering, cabling, plumbing; stairs in the extension or work needed to connect the extension to the existing house (which may be more complicated upstairs).
Figures are ballpark anyway. Given that they are ballpark figures
A Travel-thing style hotel usually starts from about £30k per bedroom, and they're usually modular/prefab construction which should be quicker and cheaper.
Nowt's cheap except words
Owain
And pretty awful to boot!
(I once visited someone, never stayed in one).
DIY must be less expensive though and this IS a DIY group ...
Mary
Indeed - thanks.
Rob
Message-ID: from OG contained the following:
I thought ballparks would be cheaper to build than that...
Its usual to spec the same foundations for 1 or 2 storey. Start at 1 metre plus maybe more when the BCO looks down the 'ole. The shell price should be substantially less than double the price of a single. Simon.
Foundations don't cost that much unless hand dug.
What actually costs is not the shell anyway..its the windows, doors, plastering, flooring,wiring, plumbing etc etc.
which is all in direct relation to floor area by and large.
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