During a high-level façade inspection of Building 30, undertaken by a multidisciplinary heritage conservation team, it was found that much of the overhanging stone was deteriorated and had reached the end of its service life. It was no longer protecting the facade elements below and posed a fall risk over the entrance. Two chimneys were highly deteriorated.

The scope of façade conservation works included replacement of structurally unsound stone, cleaning, repointing, minor synthetic stone repairs, repair and repainting of timber elements (doors and windows), removal of metal inserts and redundant services, lead weatherings to the pediments, string course and chimneys, new slate chimney pots, removal of concrete roof tile, slate roof reinstatement and bird-proofing.

Repairs to the copper clad clock tower were completed by the Minister’s Stonework Program in 2016. The condition of this asset has now been secured for the next 50-100 years.