Electrical Service to Ag lot/Contractor's Service

[hamlet]

For an ag lot, such as Fern Forrest, does one need a building permit to bring power in? I'm going to want HELCO at the front of the lot, mainly for service/contractors, both during and after construction, but eventually, the house near the back will be all solar.

Having a permanent meter & say 60A service available to plug into during repairs or emergency would be a good thing imo.