The village expanded rapidly between 19 when a series of garden estates, including the architecturally significant Pinnerwood estate conservation area – encouraged by the Metropolitan Railway – grew around its historic core. : 34 The earliest surviving private dwelling, East End Farm Cottage, dates from the late fifteenth century. The parish became independent of St Mary's in 1766, when the first perpetual curate was appointed not until the Wilberforce Act of 1868 did it appoint its first vicar, one William Hind. It was rebuilt in the early fourteenth-century, and rededicated in 1321. The church was originally a chapel of ease to St Mary's Church, Harrow on the Hill, and was first mentioned in 1234.

John the Baptist, at the junction of the present day Grange Gardens, The High Street and Church Lane. The oldest part of the town lies around the fourteenth-century parish church of St. Another suggestion of the name is that it means 'hill-slope shaped like a pin'. : 1 The name Pinn is shared with the River Pinn, which runs through the middle of Pinner. Pinner was originally a hamlet, first recorded in 1231 as Pinnora, : 11 although the already archaic -ora (meaning 'hill') suggests its origins lie no later than circa 900. The newer High Street is mainly 18th-century buildings, while Bridge Street has a more urban character and many chain stores.

Originally a mediaeval hamlet, the St John Baptist church dates from the 14th century and other parts of the historic village include Tudor buildings. Pinner is a suburb in the London Borough of Harrow, northwest London, England, 12 miles (19 km) northwest of Charing Cross, close to the border with Hillingdon, historically in the county of Middlesex.

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