The SPAB has had a number of homes, but from 1980 37 Spital Square became its HQ. No 37 is a Grade II - listed silk merchant's house, dating from 1740, which stands on the site of a medieval priory (now a scheduled monument). By the late 1970s, 37 Spital Square was run down and in need of rescue. Many nearby Georgian houses had already been demolished when No 37 was purchased buy the Spitalfields Trust and sold to the SPAB for repair and use.