Winnipeg city council will have to vote on whether to cover $17 million in cost overruns for the construction of the new police headquarters.

Councillors learned in recent weeks that the costs of redeveloping the old Canada Post building on Graham Avenue will be $75 million over original estimates.

Mechanical and electrical design changes and a backup generating system have accounted for most of the additional costs.

The city announced on Monday that officials have published a report asking council to approve the additional funds to complete the project.

The report proposes borrowing $15.2 million to cover the majority of the cost increases.

Councillors on the city's downtown development committee will get a first look at the report at a special meeting scheduled for Friday.