Chequers, or Chequers Court, is the country house retreat of the Prime Minister of the United Kingdom. The residence is located near Ellesborough, to the south of Aylesbury in Buckinghamshire, England, at the foot of the Chiltern Hills. Coombe Hill, once part of the estate, can be seen just behind. It has been the private retreat of the Prime Minister since 1921.
The original house probably gained its name in the 12th century because it may have been built or inhabited by an individual named Elias Ostiarius (or de Scaccario), who was acquiring land in the Ellesborough area at the time. The name "Ostiarius" meant an usher of the Court of the Exchequer. Elias Ostiarius' coat of arms included the chequer board of the Exchequer, so it is likely he named his estate after his arms and position at court. The house passed through generations of the De Scaccario family (spelt in many different forms) until it seems to have passed into the D'Awtrey family, whose name was eventually anglicised to Hawtrey.