5, Castle Grove

5 Castle Grove is a house built in 1856 by TC Hine of Nottingham. It features white brick construction with ashlar and stucco dressings, topped with hipped slate roofs that have tile crests and two coped ridge stacks. The building has a first-floor sill band, a string course, and a coped brick parapet with ball finials at the corners. Most of the windows are original margin light sashes with moulded surrounds. The house has three storeys plus attics and a two-window range.

Access to the house is from Castle Grove at first-floor level. The south-west garden front includes a slightly projecting bay on the right with 20th-century glazed double doors. Above this bay are single sashes on each floor, with the upper one being smaller. Above, there is a shaped coped gable featuring a single round-headed window. To the left, there is a canted bay window that spans three storeys and contains three sashes, topped with a coped balustrade. Above and behind this bay is a coped gable with a round-headed window.

The right return has a similar bay window on the left, flanked on the right by a sash window. The attic features a three-light mullioned window. At the rear, facing Castle Grove, there are pairs of round-arched windows, and to the right, a round-arched doorway beneath a round gable. A large glazed conservatory is located on the north-west side. This building is part of TC Hine's earliest phase of the development of Castle Park for the Duke of Newcastle.