I'm looking for a bit of guidance on ways to compare the quotes associated with a new build. For background this isn't my proposed extension, it's a friend at work who will demolish a bungalow and replace with a one and a half storey house with detached garage.
At the moment he hasn't chosen a build system, so he's gone out for quotes based on his plans to a few ICF suppliers along with a few timber frame suppliers, possibly other also. The quotes as they come back seem almost deliberately difficult to compare. For example the Durisol quote is about 4 lines long, while one of the timber frame is 35 pages of supply only and 37 for putting it all up.
I know estimators online could be used for a base case quote for comparison, but as far as I can see its for a single build system at a time.
So, does anyone have any tips for a cost comparison across build types? Even decanting into a spreadsheet is difficult as the quotes aren't itemised.
And has anyone used the build cost clinic at the BuildIt shows? I think they use HBXL.