The contractor agreement usually lives outside the transaction file proper, your TC is tracking purchase contract, title docs, lender conditions if there's financing, that kind of thing. The GC's own template isn't something they'd normally need unless your lender specifically requires an executed construction contract as a condition of the draw or the loan, which some hard money and rehab loan products do require before they release funds. That part is very lender dependent. If you're in a state like Texas where construction lien rules are stricter, you also want to make sure his agreement has the right lien waiver language baked in, because a gap there can complicate closing on the back end if you're flipping. Eight doors in I'd probably go back and actually read that thing before demo gets much further.