Castlehill Parish Church, Old Hillfoot Road, Ayr

Castlehill Parish Church, located on Old Hillfoot Road in Ayr, is a church complex designed by J & J A Carrick, completed in 1958 and 1964. The complex includes a former church to the southwest, which currently serves as a hall, and a church to the northeast, connected by a single-storey entrance building. It is situated on a prominent corner site and features red brick construction with contrasting cream rendered decorative sections. A distinctive rectangular brick tower rises from the linking corridor, topped with an open metal and concrete lantern and a cross above, along with overhanging eaves.

The church itself is a single-storey, seven-bay structure with an elongated hexagon plan. It has a two-leaf panelled timber entrance door with an overhanging canopy located in the perpendicular linking building to the left. The eaves window band is complemented by a shallow pitched roof above. Both the southwest and northeast elevations feature five central rendered bays, separated by brick pilasters and adorned with elongated hexagon designs, topped with shallow pitched gables. The end gable walls are plain.

Inside, as observed in 2012, the entrance leads from an internal lobby through two-leaf timber and glass panel doors with sidelights. The interior is symmetrical and oriented from northeast to southwest, with the original unified decorative scheme intact. It features a pitched timber ceiling and exposed brick walls, along with timber pews. Timber stairs lead to panelled timber galleries on the sides. The walls to the southwest and northeast have rendered bays divided by brick pilasters, featuring elongated hexagon designs and some decorative windows. The church also contains a timber communion table, font, and pulpit, which has a curved, floating sound board above.

The hall, located to the southwest, is a single-storey structure with an elongated hexagon plan and shallow gables. The southwest elevation features a brick base course with a central section of four full-height projecting windows in canted angular bays, each with overhanging triangular covers above. Flanking this are smooth cream rendered sections with narrow vertical bays and upper-level glazing to the far right. A high hexagonal window is present on the northwest elevation.

Inside the hall, as seen in 2012, there is a timber floor and a low stage, along with a tall, slatted timber panel to the southeast that has an attached timber cross. The church predominantly features fixed timber windows, although the hall has non-traditional replacements made in 2012. Both the church and hall have shallow gabled roofs, while the linking building has flat roofs.