The Willoughby Leisure Centre's gym and school holiday program will continue to operate, but its pool hall will be shut, during a major upgrade which will begin on 19 November.
At its meeting on 31 October, Willoughby City Council accepted a tender to begin construction on a major redevelopment of the facility.
Willoughby Mayor Tanya Taylor said the centre's redevelopment was a once-in-a-generation project that would deliver three new pools, an upgraded multi-sport court hall, enhanced communal areas and improved accessibility and sustainability outcomes.
"Once complete, the project will deliver a strengthened multi-sports precinct that better serves the needs of centre users, across sports such as swimming, netball, basketball, volleyball and badminton," Mayor Taylor said.
"While it will be difficult to be without our pool hall between now and mid-2024, we are confident that at the end of this project we'll have a stunning new fit-for-purpose facility that will represent the very best in modern leisure centres."
As a result of the Council's decision, the final day of operation of Willoughby Leisure Centre's existing pool hall will be 18 November, to enable the commencement of construction works during December.
The gym, including group fitness classes, and the school holiday program, will remain open across the entire construction phase.