A siheyuan (Chinese: ; pinyin: ; Wade–Giles: szu4-ho2-yüan4) is a historical type of residence that was commonly found throughout China, most famously in Beijing. In English, siheyuan are known as courtyard houses or, less often, Chinese quadrangles. The name literally means a courtyard surrounded by buildings on all four sides.
Throughout Chinese history, the siheyuan composition was the basic pattern used for residences, palaces, temples, monasteries, family businesses and government offices. In ancient times, a spacious siheyuan would be occupied by a single, usually large and extended family, signifying wealth and prosperity. Today, many remaining siheyuan are still used as housing complexes, but many lack modern amenities.
Siheyuan dates back as early as the Western Zhou period, and has a history of over 2,000 years. They exhibit outstanding and fundamental characteristics of Chinese architecture. They exist all across China and are the template for most Chinese architectural styles. Siheyuan also serves as a cultural symbol of Beijing and a window into its old ways of life.
Modern Beijing's population boom has made housing one of city's biggest challenges. Siheyuan today are typically used as housing complexes, hosting multiple families, with courtyards being developed to provide extra living space. The living conditions in many siheyuan are quite poor, with very few having private toilets. In the 1990s, systematic demolition of old urban buildings took place in Beijing under rapid economic development. Many siheyuan are being torn down to address the problem of overcrowding, and have been replaced by modern apartment blocks.
According to the Beijing Municipal Administration of Cultural Heritage, there are over 500 historic courtyards preserved in the Cultural and Historical Conservation Areas as important cultural monuments. Many of these are public museums, and preserved historical siheyuans include Lu Xun Memorial, Guo Moruo Memorial, Mao Dun Memorial, Mei Lanfang Memorial, Lao She Memorial and many others. A study by the United Nations Human Settlements Programme in 2008 estimates that there are still about 400,000 residential courtyards remaining in Beijing. The sales market of siheyuan has also been booming in recent years. A report in 2005 finds there are usually around 7,000 to 9,000 residential siheyuans that are on the market for sale, and many are generally priced at 7,000 to 10,000 yuan per square meter. However, the prices vary based on the area and the market. For residential siheyuans in the Dongcheng and Xicheng districts in 2009, the prices can go up to 40,000 yuan per square meter. For siheyuans near the Houhai and Shichahai area, the prices can go up to between 100,000 and 150,000 yuan per square meter. A 2,000 square meter siheyuan near the Shichahai area was sold for 40 million yuan ($6 million) in 2005.