Seabank, 12a Bath Terrace, Portrush, Co. Antrim, BT56 8AN

Seabank is a symmetrical three-bay, four-storey-with-attic terraced former hotel, now in use as a residential care home. The building was remodelled from a pre-1830 structure and largely rebuilt around 1912. It stands on the East Strand in Portrush town centre, west of Main Street, overlooking the Irish Sea.

The building has a rectangular plan with two-storey bowed bay windows and a projecting entrance porch to the east, and a full-height gabled return to the rear. The hipped natural slate roof has terracotta ridge tiles and leaded ridges and hips. Three 3/3 dormer windows sit in the front pitch, the central dormer flanked by rendered chimneystacks with moulded caps. Cast-iron ogee rainwater goods hang on projecting dentilled eaves. The external walls are painted smooth render on a plinth, with a moulded string course above the fourth-floor windows.

Windows throughout are 6/6 timber-framed sliding sash with horns, set in moulded architraves with projecting sills. Two sets of paired windows with continuous sills appear at the third and fourth floors. Those at the third floor are flanked by panelled pilasters with a cornice on consoles and a central keyblock, with a decorative moulded bracket under the sill of the central window. The central opening at the second floor contains modern double-leaf glazed timber doors surmounted by a segmental pediment on consoles. The bowed bays are surmounted by balustraded parapets; the bay windows themselves contain 6/6 sash windows at ground and first floor, those at ground floor level with sills at floor level, with a continuous sill course at first floor.

The principal elevation faces east and is symmetrically arranged with five openings at each floor. The bowed bays flank a central projecting entrance porch, which also has a balustraded parapet. The porch has a 6/6 window flanked by paired pilasters with entasis and Ionic capitals, surmounted by a pulvinated frieze with an ornate carved and painted cartouche and a dentilled cornice. The porch opens to left and right with replacement double-leaf panelled-and-glazed timber doors with transom lights. Access is via a concrete ramp with a modern metal handrail to the left entrance, and a stone step to the right entrance door.

The south gable is abutted to second-floor level by the adjoining building, with two windows at the fourth floor. The west, rear elevation has two 1/1 windows to the upper floors on the left, abutted at ground-floor level by a slated extension that is partially concealed from view, and abutted to the right by the full-height gabled return. The north elevation of the return has a window to the upper floors on the left and a two-storey lean-to extension with a modern lift shaft extending above the roofline; it is otherwise blank. The return gable has a window to the first floor left and a modern timber door to the ground floor left. The north gable is abutted to third-floor level by the adjoining building; the upper section is blank.

The setting overlooks the promenade at the East Strand. The tarmacadamed parking area to the front is enclosed by a roughcast rendered wall with hedge. The entrance has smooth rendered painted walls with coping stones and an oversized plinth; in the centre are square piers with moulded cornices and ball finials to their caps. The building forms part of a Victorian terrace, with a modern four-storey apartment block to the north that has compromised the setting. To the south stands a distinctive two-storey-with-attic late-Victorian house with a shaped gable and projecting two-storey glazed timber frontage. To the rear is an enclosed yard partially covered by a plastic canopy, a two-storey garage, and access to a rear alleyway through the garage.

The architectural detailing dates mainly from the 1912 remodelling and is well-preserved. Conversion to a residential care home in the late 1980s resulted in some loss of historic fabric, but the grandeur of the original interior remains largely intact.

Seabank has undergone many phases of remodelling in line with the expansion of Portrush as a bathing resort. At the core of the structure is a gentleman's summer residence dating from the early 1830s. A simple rectangular structure is shown on the site on the first edition Ordnance Survey map of 1831–2, but by the time of the valuation town plan of Portrush of around 1833 it is shown as a much more substantial building already displaying the bow-fronted seaward profile seen today. The building is recorded in the Townland Valuation of 1833 as a vacant dwelling house owned by Stephen Bennett of Greenfield in County Londonderry and valued at £25 6s. The dimensions given at that time roughly equate to those recorded in valuer's notes of 1910, suggesting that this early building was retained as the core of the later hotel. On the second edition Ordnance Survey map of 1853, the house appears as a substantial residence with outbuildings, valued at £42 in Griffith's Valuation of 1859 and leased by William Chaine from Stephen Bennett. The dimensions noted at that time indicate the building had acquired a return by the late 1850s. William Chaine was a Captain in Her Majesty's 10th Hussars and died in 1871, after which his widow continued to occupy the house until the 1880s.

In 1886, Seabank — described as a fully furnished gentleman's residence — was advertised to let for the season in the Belfast Newsletter by John Sheills and Co, who owned the house for a number of years. At that point the dwelling contained three sitting rooms and seven bedrooms in addition to servants' apartments, and the large yard to the rear had stabling for four horses and a coachhouse. John Hetherington, a retired grocer, purchased a 99-year lease for £1,000 from the Antrim Estate in 1888 and built two new houses to the right of the present building in 1890 — numbers 11 and 12 — valued at £33 each; these were later absorbed into the hotel. The Belfast Newsletter for July 1895 advertises the Seabank Hotel, which offered lunches and dinners for 1s, though at that point it was still the property of Sheills and Co.

In 1910 the hotel was taken over by Miss Fitzpatrick, Hetherington's niece, and improvements were made resulting in a rise in valuation to £52. More significant alterations followed in 1912, when a small porch was added to the front, the main block was raised from 24 feet to 51 feet in height, and the rear return was rebuilt to dimensions of 19 by 49 by 49 feet. Miss Fitzpatrick advertised the newly remodelled hotel in the Official Guide to Portrush of 1912 as being delightfully situated in its own grounds overlooking the Atlantic and the Giant's Causeway, close to all bathing places, with sea views from 30 bedrooms, accommodation for 130 guests, a billiard room, a smoke room with balcony, a large lounge, a coffee room, a drawing room, and a splendid large dining room with separate tables. The Official Guide also bears a photograph of the hotel as it appeared after rebuilding.

The three houses — the current building and numbers 11 and 12 — were taken over by Emily C. O'Neill in 1918. In 1920 she extended the porch by approximately six feet to its current dimensions, and in 1928 she made further alterations including several additions to the rear, among them a ballroom. The accommodation at that point comprised a dining room, drawing room, lounge, smoke room, recreation room, kitchen, larder, 52 guest bedrooms including 2 attics, 12 servants' bedrooms, 2 private bedrooms and a private sitting room. The buildings were valued together from this point at £230.

Also in 1928 the London, Midland and Scottish Railway proposed to acquire the hotel alongside the Northern Counties Hotel, which was already under its ownership. The railway was concerned about falling profits due to competition from motor bus tours and wished to acquire Seabank in order to boost the tourist trade, particularly from Lancashire. Surviving notes on the proposal include extremely detailed information about the layout and interior fittings of Seabank at that time. The proposal does not appear to have been carried through.

From the 1930s the hotel was owned by a limited company, Seabank Hotel Ltd. The hotel was revalued at £276 in the early 1930s, and in 1936 a passenger lift was installed, raising the valuation to £288. By that time the hotel had 60 guest bedrooms and could seat 90 in the dining room. The basement beneath the current building was fitted out as a laundry and drying room, and the hotel had central heating and electric light. In 1948, number 13 to the left of Seabank — constructed in 1910 — was absorbed into the hotel, with a consequent rise in total valuation to £400. As tourist numbers began to fall in the 1950s, in 1968 the Seabank Hotel was converted for use as a student hall of residence for the newly opened University of Ulster, accommodating 70 students. The building has since been converted into a residential care home for the elderly, was restored in 1989, and repainted in 1995. Ornamental eagles on the gate piers, recorded by Girvan and present since at least 1912, had been lost by 1995.

Seabank is an increasingly rare example of an early 20th-century seafront hotel and attests to the prosperity of Portrush and its continuing development as a resort town into the 20th century. It is of significant social interest and is an important local landmark.