THA prepared a building Master Plan for Conservation of the superstructure, masonry and roofing elements prior to implementing the first phase of the selective conservation and some temporary stabilization of walls at the interior. Conservation work for the Pictou sandstone included: repointing with lime mortar; stone repairs ranging from fine dressing back and mortar repairs, to pinning and micro-grouting; and various cleaning techniques such as poultice application and micro-abrasive cleaning.

Conservation standards were maintained by a rigorous mock-up stage performed under the direction of the masonry conservator and audited by the architects on the team.