Active job

Any Help Appreciated

Looking for info at this stage - looking into buying a transportable unit with toilet, sink and shower that will need to plumbed into existing property. Can anyone please advise a ballpark estimate into costs involved, how much work/time involved, what do you need to know before job begins, is any big machinery required (limited direct access to site) and any other info you think we need to know. Any info appreciated. Thanks in Advance