Worry over how much earthquake strengthening and heritage concerns are costing the country's local bodies

Wellington City Councillors have been briefed about the quake-prone Town Hall, ahead of a decision on its budget next week.

Officials recommend the council faces up to the increased costs, of up to 147-million dollars.

Project Chief Operating Officer James Roberts says there might need to be readjustment of policies around heritage, and quake strengthening.

He says it generates expensive projects.

The council-owned Michael Fowler Centre and Opera House also need strengthening.