Iād say thereās no hard and fast rule tbh and some things take so long (like utilities) that youād be a fool to wait. Also every plot is different. We were lucky in that we already had a building on site so could use the existing utilities to start building while waiting for new utilities to be connected.
if thereās no utilities on site then Iād suggest water and power are essential to start as your trades will need them. The electric company will run a temporary supply and your sparky will need to connect to it (afaik).
but, like I said, we didnāt need any of that so Iām probably not the best person to answer