Hampton House, aka Hampden House, 55-59 Royal Avenue, Belfast, BT1 1FX

Hampton House, originally called Gladstone House, was built around 1967–68 to designs by Robinson & McIlwaine for the Spinning Mill. The building is a five-storey, L-shaped structure with frontage on both Royal Avenue (to the west) and Lower Garfield Street (to the north).

The building is clad predominantly in white glazed vertical tiling, with brick to the rear and side elevations (cream brick with black brick detailing to parts of the ground floor). It has a flat waterproof membrane roof with internal rainwater goods.

The principal elevation facing west onto Royal Avenue comprises four tall narrow bays. Black columns rise to first-floor ceiling level, topped with pointed arched glazing divided vertically. At first-floor level these are interrupted by a white cladding band. The columns spread out at second-floor level into zig-zag walling with black chevron window columns set into the angles. The second bay from the right includes the entrance doors, which are glazed and powder-coated metal-framed, with a small pitched canopy overhead.

The northern elevation facing Lower Garfield Street extends six bays wide. The left five bays are brick clad, while the right bay is clad in white glazed tiles. The rear (east) elevation is similarly complex, comprising six bays with varied fenestration including staggered windows, ground-floor blank panels, recessed sections, canted corners, full-height vertical slot windows, and a tall square column clad in white glazed tiles supporting the upper floors. The fourth floor is recessed approximately one metre, providing a partial glazed pitched roof to the third floor.

The south elevation is abutted by the neighbouring property to the left, with an exposed brick-clad section (black brick to ground floor, cream brick above) containing various openings across all floors.

Fenestration throughout comprises a mixture of double-glazed black powder-coated and white single-glazed metal casements. Entrance doors are glazed, powder-coated metal-framed.

The building is located on the east side of Royal Avenue, opposite Castle Court shopping centre, at the junction with Lower Garfield Street. The L-shaped form wraps around the Alliance & Leicester Building (Nos. 61–63). It stands immediately adjacent to the listed terrace of Nos. 56–60 North Street and Nos. 2–10 Lower Garfield Street.