Maes Manor, originally known as Maesruddud (nprn 414576), lies on a south-facing slope above the Sirhowy Valley, on the west side of the river, to the north of Blackwood. The house lies on an ancient site though the present house dates to about 1890. The garden, formal and architectural in design, dates from 1907 and lies to the north-east, east and south-east of the house. The entrance, to the east, is off a narrow lane. Stone walls, side entrances and gate piers flank the entrance and a pair of identical lodges. The drive, flanked by mixed ornamental woodland (originally with a conifer avenue) with an underplanting of shrubs, runs to a small rectangular forecourt on the north side of the house, through high stone walls and gate piers.

The garden falls into three areas. The north side of the forecourt is flanked by a ballustraded terrace, with pavilion. Above this is a rectangular garden, long axis north by south, bounded by high walls of brick and stone on its north, west and east sides. The interior layout has gone, the whole being grassed over with modern buildings towards the north end.
To the east of the walled garden is a belt of mixed woodland surrounding a grassland field. Early maps suggest woodland with an inner geometric boundary around an open interior, but any interior layout has gone.

South of the forecourt, beyond the house, is a series of shallow semicircular grass terraces leading down to the semicircular stone revetment wall topped by a box hedge on the boundary of the garden.
Ornamental trees are planted in the upper, level lawn. Informal woodland to the east includes further notable trees and a ruinous revolving summerhouse. The terraces are bounded by grass scarps or drystone walling, with stone steps down the central axis, at the south end of which steps lead down to a gate into the field below.

Sources:
Cadw 1994: Register of Parks and Gardens of Special Historic Interest in Wales: Gwent, 92-3 (ref: PGW (Gt)54(MON)).
Ordnance Survey, six-inch map: Glamorgan XX.NW (third edition 1916).
Additional notes: D.K.Leighton.