Cutting-edge quake engineering technology emanating out of post-disaster Christchurch is being ignored by some owners in their haste to erect new buildings, says expert.

Cantabrians are setting their sights on Hamilton's housing market as they look to spend their newly received insurance payouts from damaged properties.

A quarter of the country registered for a national earthquake drill today, but despite the popularity of the exercise there are no plans to make it an annual event.

The drop, cover and hold message was practised around the country today at 9.26am today, but in Christchurch some laughed at the need to take part in an earthquake drill.

Environment Canterbury is advising dust-sensitive Christchurch residents to wear dust masks as demolitions pick up in the city.

Abandoned quake-damaged neighbourhoods in Christchurch are proving rich pickings for criminals, with burglars risking entry to unstable buildings.

Canterbury Earthquake Recovery Minister Gerry Brownlee has backed down from comments he made about frustrated residents in damaged Christchurch homes and apologised.