The Botanic Gardens and Parks Authority Act 1998 was proclaimed on 1 July 1999 to dissolve the Kings Park Board and rename the organisation the Botanic Gardens and Parks Authority (BGPA).

The BGPA is responsible for the care, control and management of Bold Park and Kings Park, including the Western Australian Botanic Garden. Functions include the provision of recreational and tourism services and facilities; conservation of natural landscapes and cultural heritage; plant management and display; biodiversity management; research and educational programs.

As part of a series of machinery of government changes effective from 1 July 2017, the Botanic Gardens and Parks Authority became part of the new Department of Biodiversity, Conservation and Attractions. The BGPA retains its status as a statutory authority under this new arrangement.