The Capitol Annex currently houses Legislative offices. It was financed with an appropriation from the General Assembly in 1946, and proceeds of the 1950 inaugural issue of the State Property and Buildings Commission, Project No. 1.
Located across from the south lawn of the Capitol, it is styled with a limestone façade, brick terrace, and balustrades mimicking the Capitol building. The Annex was originally intended to serve as a judiciary building, but with the addition of bond proceeds, it was possible to fund the construction of a more substantial office structure. Construction began in 1950, and the building was fully occupied by September 1952.
House Bill 1 during the 2022 Regular Session of the Kentucky General Assembly (budget bill) $260 million was appropriated from bond funds for the Capitol Campus Renovation Phase 2 project. The project will continue repairs to the Capitol Campus including but not limited to: the continuation of mechanical, electrical and plumbing infrastructure upgrades in the basement and on the first floor, dome and lantern renovation, security windows, and repairs to comply with building codes.