30 Springvale Lane, Ballywellan Road, Castlerock, Co. Londonderry, BT51 4XB

Detached multi-bay two-storey rendered house built in stages from circa 1800 to 1860, located west of Springvale Lane in mature landscaped grounds accessed via a winding gravel drive passing a duck-pond.

The building is irregular in plan and comprises three distinct blocks. The northern block, built circa 1800, is a three-bay single-storey house with limewashed lime render walling (cement repairs to the front elevation only). The central block, built circa 1820, is a single-bay two-storey structure. The southern block, built circa 1860, is a perpendicular larger single-bay two-storey block with ruled-and-lined cement render walling, rusticated render quoins (vermiculated to the ground floor only) and a moulded render plinth course. An informal yard to the north contains single-storey stone outbuildings with pitched natural slate roofs and timber sheeted doors, some with early cobbles abutting the north block.

The north block has a pitched natural slate roof with black clay ridge tiles, cast-iron guttering on iron drive-through brackets to brick eaves course, and a single rendered brick chimneystack to the north gable. The central block features a half-hipped roof with rolled lead ridges to the hips, black clay ridge tiles, replacement moulded steel guttering, and a tall rendered chimneystack to centre of plan. The south block has a hipped roof with rolled lead ridges, two rendered profiled chimneystacks to the north wall, replacement moulded steel guttering supported on deep overhanging boarded eaves with decorative timber brackets with drop finials and cast-iron downpipes.

The south block's front elevation is of considerably larger proportions than the remainder, featuring a full-height three-sided canted bay window with continuous render platband between floors and moulded architrave surrounds to both windows. The ground floor contains horizontally-glazed 2/2 timber sash windows with angled horns; the first floor windows have margin panes. The lower central block is stepped back slightly from the south block and abutted by a veranda with natural slate roof hipped to the north with rolled lead ridge, cast-iron guttering, and supported on three slender timber posts. The central block's first floor contains a 6/6 timber sash window with angled horns and a tripartite window with horizontally-glazed 2/2 timber sashes. A square-headed door opening to the left has a moulded architrave surround, four-panel timber door with bolection mouldings and arched upper panels, brass door furniture, rectangular overlight, and opens onto a granite platform with two granite steps.

The single-storey north block has a symmetrical front elevation with a central square-headed door opening with a salvaged flat-panelled timber door and rectangular overlight. To either side are early tripartite windows with 6/6 central sashes flanked by 4/4 sashes, all without horns and some with historic glass.

The south elevation of the south block is four windows wide. Ground floor windows are square-headed and first floor windows are segmental-headed. All are horizontally-glazed 2/2 timber sashes with angled horns; first floor windows have margin lights. First floor windows have render keystones while ground floor windows have moulded architrave surrounds with vermiculated keystones and sill brackets. The rear west elevation to the south block is detailed as per the front elevation.

The central block is stepped back from the south block and abutted by a lean-to rear entrance porch with a single replacement timber casement window with concrete sills to each floor, projecting render surrounds, and a replacement timber sheeted door. The north side elevation to the central block is abutted by a two-storey extension with a riveted water tank to the roof and a further lean-to projection.

The rear elevation to the single-storey block is abutted by a lean-to projection with a timber sheeted door and diminutive square-headed window openings having bipartite timber casement windows and no sills. The north gable to the single-storey block has a pair of square-headed window openings to the attic level (now boarded up) and a square-headed door opening with a replacement timber door.

The single-storey north block has a front garden enclosed by rubblestone walls and wrought-iron gates. Some original wrought-iron gates remain with rubblestone walls enclosing a rear access lane running to the northeast. The outbuilding to the north of the yard has segmental-headed redbrick door linings.