According to an official fire safety audit, bills of €11,000-€14,000 per apartment are estimated.
The report, which examined 632 units at Simonsridge, Sandyford, which was built in 2006 by developer Shannon Homes.
In March, a preliminary investigation by management company KPM uncovered a range of potential fire-safety issues.
The management company passed its findings to Dublin Fire Brigade, and residents were asked to volunteer as fire wardens.
A fire-safety audit was issued to owners in September and detailed shortcomings found during two inspections of a sample of 10 apartments and common areas. Among the defects noted were a significant number of fire-safety deficiencies with workmanship and building materials.
The report estimates it will cost €11,000-€14,000 (excluding VAT and professional fees) per apartment to carry out the remedial works, and another €25,000-€30,000 for each of the 32 stairwells. This equates to €9.8 million for the entire block.
19/09/2019