The Town Cellar is a Grade I listed building and a Scheduled Ancient Monument dating from the first half of the fifteenth century. Originally it was built as a market building for the wool trade; today it forms part of the Borough of Poole museum and local studies library.

A single storey, rectangular building with a parallel open plan of eleven bays, but was divided into two unequal parts (separate buildings) by the southward extension of Thames Street in circa 1788. Oak truss roof. External solid Purbeck limestone and Dorset Heath sandstone walls. Double pitched roof with a plain clay tile covering.

Visual analysis and condition survey of the stonework to the internal and external faces of the external walls to determine faults. Condition report, repair drawings, schedule of works and repair specifications for masonry, lime mortar, brickwork and consolidation work.