Lathom House, former west wing

The former west wing of Lathom House is a wing of a former country house, built around 1730. It was designed by Giacomo Leoni, with later additions to the rear around 1862 by Mr Wyatt.

The wing is constructed of sandstone ashlar with a slate roof, originally hipped. It has a rectangular, double-depth plan arranged on a north-south axis, facing east, with a central through-passage and associated outbuildings around a double courtyard to the rear. The style is Palladian.

The two-storey facade has a 2:3:2 bay arrangement, the central section breaking forwards slightly and topped with a pediment. Features include a plinth, banded quoins, a first-floor band and a moulded cornice with a blocking course. The central section features a large round-headed archway with an architrave including banded semicolumns, run-out voussoirs, a panelled keystone, a cornice with a blocking course, and damaged wooden gates. The ground floor windows are tall, with Gibbs surrounds and cornices (now boarded), while the first floor has small square windows with raised sills and plain surrounds.

An octagonal cupola rises from the center of the roof, with an oeil-de-boeuf window on each side (some with remains of wooden louvres), a moulded cornice, and an ogival stone cap surmounted by a large ball finial and weathervane. Chimney stacks flank the cupola. The north return side has a doorway near each corner with a triple keystone and a pedimented Gibbs surround. Two windows are situated between these doorways, also with triple keystones and Gibbs surrounds. The first floor mirrors the ground floor design with four small windows. The rear elevation is similar but simpler in design. Attached stable yard ranges are single-storey, comprising stables and coach-houses, and were dilapidated at the time of survey in 1991.

The interior was badly dilapidated during a 1991 survey, with the northern portion's floors and roof collapsed. The southern portion retains remains of plank panelling from former horse stalls.

The wing forms a group with the remains of a garden wall attached to the north-east corner and a ha-ha bounding the south and east sides of the former garden.