A house nearly always refers to oneself, depicting one’s body and attributes of personality. Thus if we take a large house with its many functional rooms, the library would represent the mind, the bathroom cleansing or renewal of good feelings, the bedrooms one’s sexuality or intimacy, the roof one’s protectiveness or ‘coping mechanisms’. Large public buildings such as hospitals, factories, blocks of flats, depict particular functions suggested by their nature. But of course, if the house or building has a personal connection—the house you live in, or place you have worked—then you need to define what are the essential feelings about such. Or see dream processing.
If a house or building has a quality of some other type of construction, such as a library feeling like a factory, or a house a church, both aspects should be accepted as important.