Brooklands is situated in the lee of Brooklands Hill 797' (243m), approximately 2km west of the village of Crocketford and 7.5 miles (12km) north-east of the town of Castle Douglas. The A712 forms the southern boundary of the site. The house stands overlooking the park and affords magnificent panoramic views to the surrounding upland farmland and, on a clear day, as far as the Isle of Man. To the west, beyond Brooklands Glen, Rough Hill is open moorland. The garden itself stands on the 560' contour and its exposed situation renders it susceptible to strong prevailing north-westerly winds and also spring frosts.
The designed landscape is of some scenic significance from the A712 due to its position on the south-facing slope. The lodge and folly which stand at the entrance to the east drive are of particular scenic significance.
The house at Brooklands stands within some 128 acres (52ha) of designed landscape which extends north to the woodland on Brooklands Hill, south the A712, west to the minor road through Brooklands Glen and east to the Lodge. Eastlands Farm which stands on the southern edge of the policies is now separately owned.
Documentary evidence of the development of the designed landscape is provided by a plan of the estate in 1839, the 1st edition OS map of 1854, the 2nd edition OS map of c.1900, the modern edition of the OS map, and a survey commissioned by the owner in 1983. Comparison of these maps shows that whilst the northern and western boundaries have receded slightly, the extent of the policies has remained constant since the mid-19th century. The view to the south across the parkland appears to have been a major factor in the situation of the house and remains so today.