Asbestos and rotten floors have delayed the Waipukurau's War Memorial Hall revamp.
The seismic strengthening and a major refurbishment of the hall is now not expected to be completed until the end of the month.
The 1954-built memorial hall, identified as potentially earthquake prone back in 2012, has been closed since January while the $700,000 worth of work has been carried out.
Originally due to be completed by this month, CHB mayor Alex Walker confirmed the hall was now expected to open by the end of the financial year on June 30.
She explained the delay was caused in part by some unexpected discoveries.