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OH HAI.
IMO...
Not much point going into planning without idea of cost.
I had a good build firm come round when I was weighing up options, who offered 3D designs and VR tours before build, who for a side and 2m out finger in the aired at 75K without glass or kitchen.
Here is a screenshot of how our costs worked out roughly. Your eyes will prob jump to 55K and think thats what we paid, but that doesn't include the door which was another 5ish, or VAT, another 11, or fees somewhere around 10...Power user @Sheppz may be able to help.
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chrisbmx116
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yeah in the first instance all you can do is use a £/m2 . If the general floor area of what you want plus a healthy contingency is way over then reduce the ambition.
£2300 is what I’m seeing for standard back extension stuff at the moment - that’s without fancy joinery , nice cladding and posh glazing etc
Builders are crazy busy right now - materials are scarce or doubling in price.
That quantity surveying website looks quite good tbf - having a ‘plan check’ by a local qs is another route and shouldn’t be too costly.
Sheppz
I'm working with an architect on an extension on our house, and are heading toward planning. But I want (rough) building estimates as obviously that will affect what options we take forward. Our architect has suggested https://www.estimators-online.com/ but I can't find many reviews. Does anyone have any experience of build cost estimators? It's £125 so in the grand scheme of things not a huge amount of money but is it usual to go to planning without having an idea of costs?
@chrisbmx116