The constrained CBD site and heritage context presented substantial technical and logistical challenges. Works involved demolition of an adjacent office building, deep basement excavation and construction within close proximity to the fragile GPO fabric.
Significant latent conditions were discovered, including undocumented structural deficiencies and heritage basement tunnels, which necessitated extensive seismic and structural upgrades within completed and occupied areas.
RCP coordinated closely with heritage authorities, engineers, conservation specialists, the hotel operator and construction teams to manage approvals, vibration and crack monitoring, and complex staging processes to protect the heritage building throughout construction.
Rigorous quality assurance processes were implemented, including off-site façade visual mock-ups, a full prototype hotel room approved by Marriott International, and progressive defect management to streamline commissioning and handover.
The project was delivered in line with international operator standards, resulting in a high-quality, five-star hotel that launched as a flagship Marriott property and immediately strengthened Adelaide’s accommodation capacity.
