Building cost per sq m?
Discussion
Hi All -
We have been looking at a side extension and loft of approx 40 sq m
Have just had version of the plan where this is extended to 50 sq m
do the rough costs per sq/m remain similar? One of the guys we've had round to give beermat costing said work to roughly £1600 /sq/m - so one that basis, 40 sq m would be £64k & 50 would be £80k.
i know these rule of thumb number are sketchy at best - but was wondering if someone in the trade has a model that helps accuratly scale?
(the extension will be rendered block - below in blue is the 'new' area)
Cheers Y'all
We have been looking at a side extension and loft of approx 40 sq m
Have just had version of the plan where this is extended to 50 sq m
do the rough costs per sq/m remain similar? One of the guys we've had round to give beermat costing said work to roughly £1600 /sq/m - so one that basis, 40 sq m would be £64k & 50 would be £80k.
i know these rule of thumb number are sketchy at best - but was wondering if someone in the trade has a model that helps accuratly scale?
(the extension will be rendered block - below in blue is the 'new' area)
Cheers Y'all
We're in Surrey and had 2 quotes which came in at around £3k per square metre (including VAT). I did feel that both the chaps we saw were quite young and in the profession to make a quick buck, promoting the turnkey building experience. Either that or they didn't want the work, although both chased me up after sending the quote.
This didn't include a new kitchen either (the extension was leaving the existing kitchen untouched), it did include provision for a new bathroom though, but we agreed that the estimate would include a figure for a mid-range bathroom suite.
We decided to move house in the end so didn't bother getting further quotes, but if I was going to get more quotes I would aim for the more "traditional" builders who IMO are less likely to come up with ridiculous figures.
This didn't include a new kitchen either (the extension was leaving the existing kitchen untouched), it did include provision for a new bathroom though, but we agreed that the estimate would include a figure for a mid-range bathroom suite.
We decided to move house in the end so didn't bother getting further quotes, but if I was going to get more quotes I would aim for the more "traditional" builders who IMO are less likely to come up with ridiculous figures.
Edited by XJ75 on Monday 20th February 16:10
Muncher said:
I know the figure is in the right ballpark but in my experience some builders and QS's are starting to edge towards figures which would mean it's barely viable to build anything at all these days.
do you mean viable as in getting back the monies put in?I can never tell if we're being mugged off - was surprised by the number of builder / build co's who genuinely didn't seem interested - or took the time to have a look and the didn't come back
It seems like an odd coming together of factors:
Housing market cooling - Transaction volumes down, so more people 'staying put'/ extending rather than moving
Broad materials inflation
Economic uncertainty
Some of the builders we've spoken with say that the volume of work is way down - other said they could schedule in our works just before Christmas..... Is this a polite way of being told to bog off?
Being that you are in the south east I imagine it would only be a matter of time that you should see a profit in the investment of building that extension.
Unless the area / street is not right for the size of house it becomes after the works and therefor doesn't yield profit.
It's a strange thing really as a house is a home and profit should be the last thing on the list as it's an investment in ones family and life really.
Unless the area / street is not right for the size of house it becomes after the works and therefor doesn't yield profit.
It's a strange thing really as a house is a home and profit should be the last thing on the list as it's an investment in ones family and life really.
I almost bought a house late last year that needed full renovation and a double extension to the side. It would have been around 50m2 in total, a very quick estimate came out at £60k just for the extension, that's cost price. That was based on materials at my trade prices and day rates for the subbies I use. Building material costs are rising at a ridiculous rate and have been for a few years, not helped by a national shortage or roofing materials and bricks. My local Jewson had a list of price increases on display and nearly everything is at least 10%, with one DPC supplier increase of 30%. This year they will blame it on Brexit but it's been going on for years now.
I work for a building company in the SE, dependant on several factors I would say allow £1750 for that build!
PM me if you want a quote, alternatively keep this thread updated and I will chip with anything helpful.
Buy your insulation now as it is going up a further 16% soon (March).
As to people saying building is getting expensive I believe it is just rising the same amount as everything else, the days of £1000 per m2 are long gone unless like above you have years to complete a simple project. Materials have risen recently and some materials are proving hard to purchase.
p.s the cost of employing decent tradesmen is high, if you are looking for a quality job that will be completed in a timely manner by a company who offer a good service I would say that your project will cost nearer 100k
PM me if you want a quote, alternatively keep this thread updated and I will chip with anything helpful.
Buy your insulation now as it is going up a further 16% soon (March).
As to people saying building is getting expensive I believe it is just rising the same amount as everything else, the days of £1000 per m2 are long gone unless like above you have years to complete a simple project. Materials have risen recently and some materials are proving hard to purchase.
p.s the cost of employing decent tradesmen is high, if you are looking for a quality job that will be completed in a timely manner by a company who offer a good service I would say that your project will cost nearer 100k
Edited by joshcowin on Monday 20th February 16:54
Little Lofty said:
I almost bought a house late last year that needed full renovation and a double extension to the side. It would have been around 50m2 in total, a very quick estimate came out at £60k just for the extension, that's cost price. That was based on materials at my trade prices and day rates for the subbies I use. Building material costs are rising at a ridiculous rate and have been for a few years, not helped by a national shortage or roofing materials and bricks. My local Jewson had a list of price increases on display and nearly everything is at least 10%, with one DPC supplier increase of 30%. This year they will blame it on Brexit but it's been going on for years now.
So roughly a £400 per square meter profit (vs £1,600), or £90k on a 220 square foot build. That's not a dig by the way, just interesting that it roughly tallies with what I was thinking.joshcowin said:
if you are looking for a quality job that will be completed in a timely manner by a company who offer a good service I would say that your project will cost nearer 100k
Cheers josh - just out of interest - how much do factors such as site accessibility and build type impact on typical pricing?Edited by joshcowin on Monday 20th February 16:54
Our place is/will be rendered block - which the 'tect says should be cheaper, similarly - we're on a flat wide plot with easy access from all sides. are these marginal considerations? Or, could they change things by a few quid per sq m?
our budget is £125k but thats 'all in'
what's happening to insulation costs then?
Not sure why many think that rendered block is cheaper than finished brickwork. It isnt.
When pricing work a builder will go through every aspect of the job from ease of accessibility to ground condition etc then price all material costs then approximate the time it would take in labour then add profit. Then we would divide this by the added extension size to approximate the value per metre which everyone is so obsessed with.
Scaling comes into it as you wouldn't build a 4m2 extesion for just, say £1500 + vat nor would you expect to win a job where you have priced a 200M2 job at £1500 perM2
When pricing work a builder will go through every aspect of the job from ease of accessibility to ground condition etc then price all material costs then approximate the time it would take in labour then add profit. Then we would divide this by the added extension size to approximate the value per metre which everyone is so obsessed with.
Scaling comes into it as you wouldn't build a 4m2 extesion for just, say £1500 + vat nor would you expect to win a job where you have priced a 200M2 job at £1500 perM2
037 said:
Not sure why many think that rendered block is cheaper than finished brickwork. It isnt.
When pricing work a builder will go through every aspect of the job from ease of accessibility to ground condition etc then price all material costs then approximate the time it would take in labour then add profit. Then we would divide this by the added extension size to approximate the value per metre which everyone is so obsessed with.
Scaling comes into it as you wouldn't build a 4m2 extesion for just, say £1500 + vat nor would you expect to win a job where you have priced a 200M2 job at £1500 perM2
Couldn't agree more, Every job I price is worked out on an individual basis as no 2 jobs are the same.When pricing work a builder will go through every aspect of the job from ease of accessibility to ground condition etc then price all material costs then approximate the time it would take in labour then add profit. Then we would divide this by the added extension size to approximate the value per metre which everyone is so obsessed with.
Scaling comes into it as you wouldn't build a 4m2 extesion for just, say £1500 + vat nor would you expect to win a job where you have priced a 200M2 job at £1500 perM2
Once I've worked out all the variables, Then I will work out its sq mt price if the client wants this.
Hereward said:
My 40m2 single-storey oak-frame kitchen extension quote is £3,750+VAT per m2.
Excludes floor coverings and fixtures and fittings.
The oak frame and glazing is £50k + VAT.
The building works are £100k + VAT
I assume this is close to a world record quote.
So, having put up the oak frame and glazing, what are the building works that would cost you £3,000/m2?Excludes floor coverings and fixtures and fittings.
The oak frame and glazing is £50k + VAT.
The building works are £100k + VAT
I assume this is close to a world record quote.
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