Skokholm Lighthouse with enclosure walls and stores building

The site includes Skokholm Lighthouse, associated enclosure walls, and a stores building, constructed in the 1915 by the Corporation of Trinity House. The lighthouse rises from a symmetrical, two-storey, flat-roofed, white-stuccoed accommodation block, with a slightly projecting central entrance bay on the northeast front from which the octagonal tower arises. The building features a plinth and a heavy, two-step cornice, the upper part rounded with a parapet. Two corniced side-wall stacks are present. A projecting, flat-roofed porch with a similar cornice and blocking course incorporates a narrow front window, framed ledged doors with overlights, and a window above, displaying the Trinity House arms in relief. Windows are renewed casements with top-lights in original openings; there is a two-light window on each floor to either side. The tower transitions from a square base to an octagon, rising for one stage with recessed single windows in alternate faces. A heavy ogee cornice tops the lantern walkway, which has cast iron railings based on a standard Trinity House design of column shafts, square blocks above, and small ogee finials. The large lantern has a cast-iron fluted circular base under large-paned cast-iron lattice glazing, capped by a shallow conical roof with a cylindrical domed cowl and weathervane. The left side of the tower displays a stair-light at mid-height, and two ground floor two-light windows. The right side features a single light to the first floor left, a blocked door to the ground floor left, and a two-light window to the right. The rear elevation shows three upper two-light windows, a central ground floor door flanked by two two-light windows to the left and one two-light and one single-light window to the right.

The white-washed rubble enclosure walls have rounded copings that ramp down to follow the slope, containing two stuccoed gatepiers. The stores building matches the style, being single-storey with a flat roof. It has two doors with overlights and one window to the front, a similar door and window to the southeast end, and a two-light window with a single top-light to the northwest end. Later 20th-century double doors are located at the rear to the left.

A tablet above the entrance records the construction details and names key figures from the Corporation. The central lobby provides access to an engine room on the seaward side and accommodation to the west. A stone mural staircase leads to the tower, incorporating lotus-designed newels to cast-iron rails. A cast-iron tube, originally housing weights for a clockwork rotative mechanism, extends the full height of the tower. Radial beams support the lantern floor, and a cast-iron staircase ascends to the lantern. An electrically lit and operated optic, enclosed by red filters, was installed in the early 1970s. The tower staircase provides direct access to the first floor of the keepers' accommodation, which also has a secondary staircase.