The first of seven public meetings on the proposals will be held tomorrow night in Wellington.
And just three days ahead of the second anniversary of the February 22 disaster there will be a public meeting in Christchurch.
"Getting the policy right involves striking a balance between the risks posed by buildings in earthquakes and the costs of strengthening, or demolishing, them," said Mr Williamson, who will be at several meetings including tomorrow night's at the Michael Fowler Centre in Wellington.
There will also be meetings in other main centres before the consultation process ends on March 8.
Individual local authorities are currently responsible for how quake-prone buildings are dealt with in their areas.
Mr Williamson said that while some councils have been active in consulting their communities, others less so.
It's resulted in many quake-prone buildings not being dealt with in a "timely and cost-effective way", he said.
Under the proposed changes, all non-residential and multi-unit, multi-storey residential buildings would have to be assessed within five years.
Owners of buildings assessed as being earthquake-prone would then have up to 10 years to strengthen or demolish them.
The Ministry of Business, Innovation and Employment has issued a consultation document and a DVD which explain the proposed changes in detail.
Mr Williamson urged people to attend the meetings or give written feedback.
The consultation document, details of the public meetings, and an online response form can be found here.