Putney house extension costs & suggested builders
Discussion
Hello,
I have just had lunch with a friend of mine who is in the process of trying to decide on which quotation to accept of a house extension.
To give you an idea of the project the existing house is 170m sq, with a single storey garage and a single storey kitchen on the side of the house. The house has just been bought for £1m and is likely to be worth £2m when finished (this is probably effecting the levels of the quotations).
The work will involve increasing the size to 350m sq by knocking down the garage and erecting a double storey extension, increasing the single storey kitchen around the side and back of the house and raising the the roof by 1m to create a third storey.
An architech has produced a series of drawings and I have reviewed the quotes which appear a little on the steep side.
2 things can anyone reccommend a builder in Putney or someone who would do this sort of project and secondly any guesses on ball park figures?
Thanks in advance.
Alex
I have just had lunch with a friend of mine who is in the process of trying to decide on which quotation to accept of a house extension.
To give you an idea of the project the existing house is 170m sq, with a single storey garage and a single storey kitchen on the side of the house. The house has just been bought for £1m and is likely to be worth £2m when finished (this is probably effecting the levels of the quotations).
The work will involve increasing the size to 350m sq by knocking down the garage and erecting a double storey extension, increasing the single storey kitchen around the side and back of the house and raising the the roof by 1m to create a third storey.
An architech has produced a series of drawings and I have reviewed the quotes which appear a little on the steep side.
2 things can anyone reccommend a builder in Putney or someone who would do this sort of project and secondly any guesses on ball park figures?
Thanks in advance.
Alex
Busa mav said:
Can I ask how you came to that conclusion , I guess you must be in the building game ?
I am a civil engineer by trade and have some involvement in building projects more infrastructure and commercial then housing.The cost just seems a little high having spoken to a few people at work who have done quite a bit.
Standing back and looking at it he is going to add £1m in value for 500-600k, so a £400k potential profit subject to the normal cavets about being able to sell it etc etc.
The cost is working out as approximately £2700 per sq m, I thought £1500 a sq m was more like it or it that only shell and core!
I know there is signifcant experience and expertise on here and was looking for a second opinion. Seeing as all the quotes are within 100k of each other they may be in the right ball park.
I think there could be a bit of postcode overhead on it!
Edit, having just checked the internet here, http://www.designyourhouse.co.uk/page.php?name=pri...
Working on the fact that the kitchen is spec'd as Magnet, there is not underpinning or other major structural items apart from 12 No UB/UC's, standard spec bathrooms etc. The only pricy stuff is solid timber frames windows and bi-folding doors. I suppose you could add 15% for the "hot spot" weighting.
Edited by ALawson on Wednesday 7th September 20:16
Work on £1650 / m2 for a middle of the road finish. Then add kitchens, bathrooms, rewire and plumbing.
For a propoerty of that value he needs to be fitting high end fixtures and fittings, otherwise potential purchasers will just budget to strip kitchens etc and refit , of course that will then reflect in the sale price
That £1650 btw is based on domestic extensions outside of London
For a propoerty of that value he needs to be fitting high end fixtures and fittings, otherwise potential purchasers will just budget to strip kitchens etc and refit , of course that will then reflect in the sale price
That £1650 btw is based on domestic extensions outside of London

Busa mav said:
Work on £1650 / m2 for a middle of the road finish. Then add kitchens, bathrooms, rewire and plumbing.
For a propoerty of that value he needs to be fitting high end fixtures and fittings, otherwise potential purchasers will just budget to strip kitchens etc and refit , of course that will then reflect in the sale price
That £1650 btw is based on domestic extensions outside of London
Off course, he isn't fitting it out like a student house nor is he looking to replicate one of Gadaffi's properties! Someone has PM'd me some details which I pass on.For a propoerty of that value he needs to be fitting high end fixtures and fittings, otherwise potential purchasers will just budget to strip kitchens etc and refit , of course that will then reflect in the sale price
That £1650 btw is based on domestic extensions outside of London

I just wish I had the same financial options!
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