A back yard (or backyard) is a yard at the back of a house, common in suburban developments in the Western world.
In cold-weather regions, it is economical in low land value regions to use open land surrounding a house for vegetable gardening during summers and allowing strongly demanded sunlight to enter house windows from a low horizon angle during winters. As land value increases, houses are built nearer to each other. In order to preserve some of the open land, house owners may choose to allow construction on the side land of their houses, but not build in front of or behind their house in order to preserve some remnants of open surrounding land. The back area is known as the backyard, or more commonly in the UK and some other parts of Europe as the back garden (if cultivated).
Depending on the size of the back yard, it may have any number of items (or none), such as:
In Australia, until the mid-twentieth century, the back yard of a property would traditionally contain a fowl run, outhouse, vegetable patch, and woodheap. More recently, these have been replaced by outdoor entertainments such as a barbecue and swimming pool. But, since the 1990s, the trend in Australian suburban development has been for back yards to disappear as the dwellings now occupy almost all of the building plot.
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