Well start by turning on the electricity, then turn on main water valves, turn on all sink, tub, toilet faucets and let water run until air is bled from system. Check system for leaks. Should be good to go after flushing toilets to remove anti-freeze from the bowls.
There are several steps to take in order to dewinterize a boat. The main steps are to change the engine oil and oil filter, check the battery, clean the distributor, fill up the cooling system, check the belts, and to change the fuel filter and check the fuel lines.
I just took over a foreclosed home and i spent all morning calling plumbers to come out and unwinterize the house. they told me i can do it myself. Here's how. get 2 or 3 people, the other people are to be in the house 2 make sure all valves, hoses, anything that connects 2 water is turned off including washing machine hookups. the turn on the water usually in the ground near a telephone pole in my front yard (in my case) where the water meter is.... the house should have water turn on the hot water in the tub or sumthin and the water heater should fill up with hot water supposedely.. i don't know if this works yet cuz i have 2 more days till my water is Abe 2 turn on. i help this helps someone. i guess its better than nothing Addition: I learned the hard way (don't ask), but one of the most important check points is the water heater drain valve (make sure it is not open from the people who winterized it).