A Building Preservation Trust (BPT) is a charity formed by people who share the common aim of saving and preserving one or more historic buildings. Most BPTs achieve their aims by acting as "developers of last resort": acquiring historic buildings that are in an advanced state of dereliction and do not provide an attractive proposition to commercial developers, carrying out essential repairs and improvements, and disposing of the buildings on the open market.
BPTs can be national, regional or local. Some are established to save one individual building. Many develop relationships with the local community. All are eligible to join the Association of Preservation Trusts, as well as developing relationships with funding organisations such as The Architectural Heritage Fund, the Heritage Lottery Fund, Historic Scotland and Local Authorities.