Altogether the house and gardens of Kelston Park cover an area of approximately 75 hectares (190 acres).

The first house on the site was north of the current building, beside the village church, where a walled courtyard and terraced earthworks are all that remains above ground.

[2] The Tudor mansion was demolished in the mid 18th century, and the current house at Kelston Park was built on a ridge overlooking the Avon River, on the site of the Haringtons' summerhouse.

It covers 13,202 square feet (1,226.5 m2) on three floors,[5] and was built around the 1760s by John Wood, the Younger for Sir Caesar Hawkins, who was Serjeant-Surgeon to Kings George II and III.

[10] The mansion house has two storeys and an attic level with a mansard roof, on an almost-square footprint five window bays wide.