15 Market Street, Moneymore, Magherafelt, Co Londonderry, BT45 7PE

15 Market Street is a former police barracks, built between 1820 and 1839 and designed by William John Booth. The building is set within a sunken walled garden in Moneymore and represents a thoughtful and ingenious security solution from the early Victorian period.

The main house is three bays wide and two storeys tall with a lower floor, featuring a gabled natural slate roof and sturdy construction in coursed white limestone with a sandstone plinth. Single storey detached wings contain a bridewell and store. The west elevation displays a central projecting flat-roofed porch with ashlar stone side walls forming plain wide pilasters that support a deep frieze and thin cornice. The entrance door is timber framed with a sheeted bottom panel and four equal square glazed panels above. On either side at ground floor are single segmental-headed four-pane double hung sliding sash windows with sandstone voussoirs and sills. Three similar windows occupy the first floor. The gable chimneys are ashlar faced with cornice capping. Walls project from each gable to create a shallow forecourt, returning along the access from Market Street.

The east elevation is similar in character but rises three storeys, with a central projecting gabled porch added more recently. A plain stringcourse flush with the coursed white limestone marks the ground floor level. Both gables are windowless with bold sandstone quoins.

Narrow passages at either gable separate the bridewell and store from the house. Both ancillary buildings are constructed of coursed white limestone without sandstone quoins, are gabled and slate-roofed with ridges at right angles to the main house. The bridewell contains two cell doors accessed from the passageway, with a narrow three-light window in a sandstone surround in the gable lighting one cell and a similar window in the north long wall lighting the other. The store on the south side has a segmental-headed door on its south wall, a small window, and an opening.

The entire complex is enclosed by a boundary wall of matching construction. Access to the sunken garden is by gated steps from Market Street. The windows of the house appear to have been replaced at a later date, and a rear porch is a much more recent addition. The property is now owned by John Glover Ltd.