Is there such a thing?
I'm after something into which you can input basic data, such as dimensions, extension or standalone, roof type, number of doors/windows, construction material (brick/block or timber framed), drainage, etc and get a rough idea of total build cost.
It's so I can give "off the top of my head" estimates, before embarking upon the lengthy process of a written quote, confident that the final figure won't be too far out.
It would be great to test how serious and committed customers are to a project without spending hours putting a price together only to be told "oh! We thought it might be half that!"
Any suggestions? Cheers, D.