Engine House at Pendeen Lighthouse

The Engine House at Pendeen Lighthouse is a single-storey structure built in 1900. It features a square plan and is constructed from rendered rubble with a flat roof, designed to cool water for air engines and compressors. The east elevation, which faces the lighthouse, has a one-light window at the front and a north-facing plank door with an overlight. To the right, there are plank double doors leading to the main block. Both the north and south sides have two 2-light transomed timber windows, with the upper lights angled back from the wall. The west elevation includes a curved bay window. The roof is topped with resonators made of cast iron and copper bellmouths.

Inside, there is an entrance lobby with a quarry-tiled floor, and steel chequer plates cover the pipe ducts. The walls are lined with white glazed tiles up to windowsill height. Notable fixtures include a standby diesel generator by Petter, air receivers, actuating valves, a reducing valve, and a 12-inch siren. The two signal compressor sets, featuring engines by Ruston Hornsby, are particularly significant examples. This engine house is unique in the country for retaining its 12-inch siren along with the associated machinery. It is part of an impressive group of structures at Pendeen, which includes the surrounding walls and the lighthouse itself.