[malandrew]

I wonder also if there is an obligation to finish construction in a certain time frame. If not you could draw up grandiose plans with an architect and after you get the permit you just build part of it immediately and start living in that part and then take the next 20-30 years to build the rest, if ever.

[yakak]

You generally have to get a certificate of inspection when the work in a permit is complete and a number of things are technically illegal before then.