Setting 1: A small neighborhood, with only 2 or 3 usable houses, and a mansion at the end of it. (Estimated to take about a month)
Setting 2: A town, small enough for a game, complete with 4 or 5 usable houses, an apartment complex, a possible bar and restaurant, a police station, hospital, a highschool, etc. (Estimated to take about 2 to 3 months)