Get legal advice from somebody with building contract experience.
Standard building contracts typically have time limits such as time for builder to
obtain building permit from time of signing contract
commence construction…

Be careful you don't end up paying the demo company an extra $5k or so for 'emu picking' or 'chicken bobbing' etc. for 'hidden asbestos' , 'under slab' 'in bathroom…

Most customers just look at the staged photo 'proof', accept it, and end up paying the extra $5,000-$10,000. They then thank the demolition company for 'saving' them money by 'emu…

I think most people would be the same and some demolition companies take advantage of this. An extra $6K for "hidden asbestos" seems to be their sweet spot and most…