how much to build a house
Discussion
Forgot to add...this is a useful online calculator
http://www.buildstore.co.uk/finance/build-cost-cal...
http://www.buildstore.co.uk/finance/build-cost-cal...
ColinM50 said:
If I were building a five bed house from scratch I'd WANT flash.
Yes budget on £150 ft2 and a five bed house will be c2,000 ft. Plus a four car garage
We're building a 3 bed house, 1500ft2, and people tell me it is small. Yes budget on £150 ft2 and a five bed house will be c2,000 ft. Plus a four car garage

Mind you, the master bedroom/en suite is 1/4 of the whole house footage. SWMBO is responsible for that.....

It does have a four car garage/workshop though, but that is in the back yard.
And a roof garden.........
A house builder will do a high spec house for £90-95 per sqft at that size. So if you think £100-105 per sqft you should be about right but you need to think about "abnormal costs" these can include:
extra depth founds due to tree influence
extra drainage costs due to pipe runs, distance from mains
topography - is the site level?
does it drain by gravity?
extra length drive
extra parking area
abonormal materials in some areas eg stone walls, slate roofs, heads, cills, metal rainwater goods etc
boundary treatments
diversion of services
lowering of services where site joins road
demolition of existing structures
oil or LPG fired heating
external lighting of parking areas
double or triple garage (above cost will include double garage)
Concrete first floor?
Block internal walls
Attic trusses (if you want to use the attic as a room in the future)
there is a long list.
The only real way is to do it the way a builder does it.
Decide full spec and design, look at site specific requirements then cost it properly. Then do not change spec!
extra depth founds due to tree influence
extra drainage costs due to pipe runs, distance from mains
topography - is the site level?
does it drain by gravity?
extra length drive
extra parking area
abonormal materials in some areas eg stone walls, slate roofs, heads, cills, metal rainwater goods etc
boundary treatments
diversion of services
lowering of services where site joins road
demolition of existing structures
oil or LPG fired heating
external lighting of parking areas
double or triple garage (above cost will include double garage)
Concrete first floor?
Block internal walls
Attic trusses (if you want to use the attic as a room in the future)
there is a long list.
The only real way is to do it the way a builder does it.
Decide full spec and design, look at site specific requirements then cost it properly. Then do not change spec!
Mermaid said:
That's 1 floor I suppose, what if you have a 2 floor extension/house?
Its gets slightly cheaper per sqm for 2 floors. Big cost is groundworks and roof, the bit in between is cheaper.So 3 to 5 stories is cheaper per sqm of floor space (not footprint), once you get to 5 storeys the price goes up as you have to protect against progressive collapse.
All prices I have seen quoted on this thread are based on gross internal floor area, NOT footprint
blueg33 said:
Mermaid said:
That's 1 floor I suppose, what if you have a 2 floor extension/house?
Its gets slightly cheaper per sqm for 2 floors. Big cost is groundworks and roof, the bit in between is cheaper.Mermaid said:
So of it's 2 floors, will an extra 50% be enough in addition to the 1 floor cost?
Roughly yes. But the only safe way is to get a drawing and get it costed, there are so many things that affect cost. Eg do walls line up, does plumbing line up.But for a ball park yes you just measure the total sqm of floor space and multiply by your chosen rate, anything from £900-1500 per sqm
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