As of its most recent annual report, from September last year, that amount was $19m. Of that, $9m was added that year.
At that time, the council was facing five significant multi-unit claims for weathertight repairs that were at various stages of legal proceedings and had a potential total liability of $63m.
The council expected its liability to be closer to $13m, but increased its provision to $19m based on claims history and the value of actual claims, according to the September report.
The Bay of Plenty Times has sought an update from the council about the provision and proceedings.
The Cayman building was completed in 2007. It has 48 three-bedroom apartments between 150-180sq m.
The legal action began after the council issued a notation against the building's property file.
The notation, discovered in early 2016, read the council was aware of "defects" in one apartment and there could be defects in all apartments.
It said the code compliance certificate "may have been issued in error and therefore we do not recommend reliance on it".
The note came after one apartment owner successfully settled out of court with the council over defects to his apartment.
Clark previously told NZME the council declined to remove the note or divulge the full engineer's report it was based on, leaving owners no option but to investigate the building and its construction. This revealed major defects.
The civil case was launched and a hearing was set for May in the High Court at Hamilton.
As of January 2019 - the most recent immediately available figures - 127 properties in Tauranga have open claims at the Government's Weathertight Homes Resolution Service. Apartments and units are counted as individual properties. The number of total open claims was 15.
Bella Vista update
Tauranga City Council's prosecution against five parties involved in the failed Bella Vista development is due to resume on Monday.
The trial started in March but was paused midway because of the Covid-19 pandemic.
In April, the Ministry of Business, Employment and Innovation completed its review of the council's building control functions, which arose out of the Bella Vista saga.
MBIE released the results of its investigation in March last year and found multiple failings in the council's building control procedures. It identified 10 areas that needed action.
The ministry made its last formal follow-up visit in March this year to check the council's progress and confirmed in April that changes had been made in all areas.
Only one action was still to be fully implemented, relating to a change to the city plan that deals with large-scale earthworks and associated infrastructure, which was delayed by the pandemic.
The council is in the process of seeking a buyer for the Bella Vista land in The Lakes, which it bought from homeowners for $14m, but has not released the list or number of parties being considered, citing commercial negotiation sensitivities.