While new changes to the way earthquake-prone buildings are assessed would increase safety they would not be without a cost - which Napier Mayor Bill Dalton said many individual owners and councils would find difficult to afford.
Napier, along with Wellington, Gisborne, Nelson and Palmerston North, will be affected by the bill, which has gone into select committee and which targets masonry on facades, parapets and verandas of older buildings.
The affected structural areas will have to be assessed and upgraded in half the original time given over to strengthening.
The Government began planning the changes to the structural rules for earthquake-prone buildings in the wake of intense lobbying, led by Christchurch woman Ann Brower, who was the sole survivor on a bus which was crushed by falling masonry during the February 2011 earthquake.
Wigram MP Megan Woods described the bill sent to the select committee as vastly different from the one which had emerged from the initial process, as those involved realised how important it was "to get it right".