The house is surrounded by 274 acres (111 ha) of formal gardens, and parkland which supports a herd of fallow deer.

The grounds, which were originally laid out by George London and later developed by Charles Harcourt Masters, include water features and statuary.

[1] The first lord of the manor to be resident may have been William Denys, who was an Esquire of the Body to Henry VIII and later High Sheriff of Gloucestershire.

[5] The west front of 1692 was commissioned from Huguenot architect Samuel Hauduroy,[6] and includes an Italianate double staircase leading from the terrace to the grounds.

[6] The construction of the east wing included demolition of the remains of the original Tudor house and the addition of a statue of an eagle on the roof.

The report's authors noted that Dyrham Park was owned by several individuals who were involved in administering colonies, including Blathwayt, who was a prominent official in the Southern Department.

The two-storey west front, which was built in the 1690s, has three bays of each side of the central doorway, which has Doric columns, with smaller pavilions at the ends of the wings.

[7] The east front, which was added around 1704, has shallow projecting wings and a central door under a balustrade with an Italianate double staircase leading down to the lawns.

[19] Blathwayt's travels are also represented by paintings by Spanish artists such as Bartolomé Esteban Murillo and a staircase made of walnut from his estates as auditor general of the Colony of Virginia.

[21] On the south eastern side of the house is an orangery, which was built as a greenhouse in 1701 and has a glazed roof which was added around 1800 by Humphrey Repton.

[26] The church is not owned by the National Trust but is closely associated with the rest of the estate and has the tombs and memorials for many owners of the house.

[29] The house is set in 274 acres (111 ha) of gardens and parkland, which was home to a herd of 200 fallow deer[30] until they were culled due to the spread of bovine tuberculosis in 2021.

[32][33][34][35][36] There is statuary in the grounds, including a statue of Neptune by Claude David, about 320 metres (1,050 ft) east of the house.

[3] They included a formal Dutch water garden, but most of the features were replaced in the late 18th century with designs by Charles Harcourt Masters.

A bus takes visitors from the car park down to the house, gardens, tea room and shop.

[45] In September 2010, the BBC filmed scenes for the Doctor Who sixth series episode "Night Terrors" at Dyrham Park.

[49] The BBC series Poldark filmed scenes at Dyrham Park, as the home of George Warleggan, between 2015 and 2018.