Warehouse

The warehouse at Perran Wharf, originally serving the Perran Iron Foundry, dates from the mid-19th century and is now used as an office. It features painted shale rubble walls, slate sills, shallow brick arches, and a mostly grouted scantle slate roof with brick chimneys on the left gable end and over the ridge of the cross wall.

The building has a long rectangular plan, with offices on the left (south) side that are double depth and two rooms wide, separated by an entrance passage. The larger warehouse is located on the right (north) side. The structure is two storeys high, with a regular four-window east front that is nearly symmetrical. The office front includes a central doorway with an original four-panel door and overlight, as well as original windows featuring a three-light bay with a hipped slate roof and original hornless sashes on the first floor, likely for the foundry overseer. The rest of the front has 16-pane hornless sashes. The warehouse side has a wide doorway with a ledged sliding door and original 20-pane two-light casements. The rear of the building retains its original fenestration, with four first-floor sashes and three ground-floor sashes for the office, and original casements for the warehouse, which is a mirror image of the front. The rear used to face the river bank, which has since been diverted.

The interior, which was partially inspected, retains original 19th-century carpentry and joinery. This warehouse is part of the Perran Iron Foundry, established in 1791, which was once the most significant foundry in Cornwall, known for manufacturing some of the largest beam engines ever constructed. The building is notable for its completeness, including the full survival of its 19th-century windows, with sashes for the office and casements for the warehouse.