Sydney’s Opal Tower apartment complex has reached a major milestone, with a ceremony marking the building’s official declaration as defect-free nearly eight years after structural cracking forced residents to evacuate.

The 36-storey residential tower at Sydney Olympic Park became the focus of national attention on Christmas Eve in 2018, when cracks appeared in parts of the building. Fears about the building’s safety prompted the evacuation of thousands of residents and the closure of nearby roads and the railway station during the emergency response.

Further cracking was identified in the days that followed, raising questions about the building’s design, construction and structural integrity. Residents faced disruption, uncertainty and the prospect of lengthy repairs while investigations were undertaken.

An engineering report commissioned by the New South Wales government in 2019 concluded that the cracking resulted from a combination of design and construction issues, including changes made after the original design. The findings prompted extensive rectification work and added scrutiny of apartment-building standards across the state.

The repair process involved the building’s owners corporation, the developer, engineering consultants and the builder. Legal proceedings, including a class action and other court cases, were part of efforts to address the defects and secure compensation for affected owners.

Shady Eskander, chairman of the Opal Tower Owners Corporation, said the formal declaration represented the end of a long and difficult period for residents. He described the experience as deeply disruptive to people whose homes had become the centre of a prolonged building-safety dispute.

For some residents, the consequences extended well beyond construction work. People were forced to leave their apartments, arrange alternative accommodation and wait while the building was assessed and repaired. One resident, Nutan Borkar, said she had spent 11 months away from her unit after the incident and was relieved to see the process reach this point.

The building is now covered by a reported 20-year structural warranty, providing additional protection relating to its structural condition. The owners corporation also said compensation matters and legal proceedings had been resolved.

The Opal Tower case contributed to broader debate about building quality, accountability and consumer protection in New South Wales. It also highlighted the importance of independent engineering oversight and reliable construction practices in high-rise residential developments.

Although the latest declaration marks a significant conclusion to the repair process, the experience remains a reminder of the financial and personal consequences that major building defects can create for residents.