Original sentence: Basic design consists of a living/eating area, a sleeping area, and (if indoor facilities are available) a washing/lavatory area.In the West, where plumbing is common and the standard of living fairly high, each house will at least contain a bedroom, bathroom, kitchen or kitchen area, and a living room.Often, in traditional agrarian societies, domestic animals such as chickens or larger livestock share part of the house with human beings
Edited sentence: Each house will at least contain a bedroom, bathroom, kitchen, and a living room