10-12 Bridge Street, Carnlough, Ballymena, Co Antrim, BT44 0ET

A two-storey rendered and slate-roofed building occupying the site of and possibly incorporating parts of an old corn-mill, from which the locality 'Mill Tenement' derives its name. The building appears in its present block form on the Ordnance Survey map of 1832, when it stood alone as a single-storey thatched structure. It was raised to two storeys and re-roofed with slate by 1859. The OS map of 1857 shows it attached to neighbouring buildings on the north-west side. The mill ceased operating prior to 1903 and was subsequently converted into a butcher's shop and then a dwelling house. No original mill machinery or features remain.

The building has undergone various remodellings due to changes of function and has lost a number of original features, resulting in negligible industrial archaeological interest and little architectural interest.

The main entrance front faces south-east and comprises a battered entrance wall with a curved corner meeting a north-east gable at a right angle, and a gabled front return at the opposite end. The entrance front has a roof of Bangor blue slates in regular courses with a corner of eaves offset above the curved corner. The chimneys are smooth rendered with plain block cornices and old and new pots. A cast iron gutter and downpipe run along the front. The wall is smooth rendered with traces of lining, pilaster-like strips of channelled blocks at each end, a projecting eaves course, and a battered face. Ground floor windows comprise one modern rectangular timber fixed light with top-hung vent and one rectangular timber sliding sash, 2 over 2 with horns and exposed frames. First floor windows are rectangular timber sliding sash, 2 over 2 with horns and exposed frames, set in moulded stuccoed surrounds with projecting cills and the projecting eaves course to the head. Two doorways to the ground floor contain modern glazed and panelled doors set in moulded surrounds with key-blocks.

The north-east gable has an asymmetrical form, curved to the left-hand corner with a battered face and raised smooth cement rendered coping to the verges. A cast iron downpipe and hopper with concealed gutter serve a short flat-roofed portion to the right. The wall is smooth rendered with quoining to the right-hand extremity. A single small rectangular timber sliding sash, 1 over 1 with horns and exposed frames, is set in a moulded stucco surround with key-block.

The front return block has walls facing north-east with a roof of asbestos slates in irregular courses contained by cement gable coping. The walls are smooth rendered and painted with one window, a rectangular timber sliding sash, 1 over 1 with horns and exposed frame, set in plain reveals. The gable facing south-east is of similar plain character with one window to the first floor, a modern rectangular timber fixed light with casement and top-hung vent.

The south-east elevation is two-storey, comprising the gable of the main block to the left with the front return extending to the right. The gable of the main block has walls rendered with a dry dash of limestone chippings and smooth rendered copings. A smooth rendered chimney on the ridge is set back from the gable with two pots, one old and one new. Two ground floor windows comprise one rectangular timber sliding sash, 2 over 2 with horns, with painted reveals and concrete cill, and one modern timber fixed light with top-hung vent connected with a modern timber glazed door with narrow vertical panes. The wall of the front return wing is smooth rendered and painted with a roof of asbestos slates in irregular courses contained by cement gable coping to the right, PVC gutter and downpipe.

The rear elevation has a roof of asbestos slates in regular courses with a modern rooflight. The wall is smooth rendered and painted with one rectangular metal casement window. A PVC gutter and downpipe run along the rear, with the downpipe crudely returning across the face of the wall.

The building stands within the built-up area of the village at one end of a terrace of three houses facing along Bridge Street, set back from it with a small hard-standing used for car-parking outside the front entrance. A narrow lane runs past the gable of the front return to adjacent properties. Immediately to the rear is a small concrete yard shared with 2-4 Waterfall Road, bounded by a basalt rubble wall to the south-west and entered via rendered walling to the south-east containing a pair of large double steel-sheeted doors.