The number of new houses approved in July, excluding apartments, rose a seasonally adjusted 3.1%, according to Statistics New Zealand.
The figures were led by the highest number of building consent approvals in Canterbury since 2005, and by a strong rise year-on-year in the Auckland region.
During the month nationally there were 1675 non-apartment dwellings approved, which is a 34.8% rise on the number approved in the same month a year ago.
Including the volatile apartment figures there were a total of 1893 new dwellings approved, which is actually down 0.8% on a seasonally adjusted basis from the June 2013 figures. Compared with July 2012 the figure including apartments was up 28.1%.
However, apartment figures, which include retirement village units, move up and down a lot from month to month and the figures for actual houses are a more reliable month-on-month guide of trends.
In July there were 218 apartment approved, including 133 retirement village units.
Westpac senior economist Michael Gordon said the main uncertainty in the July figures was about how the pace of consents would hold up in Christchurch, after the city council was stripped of its accreditation to issue consents.
"The answer was: pretty well. We estimate that in seasonally adjusted terms there were 183 housing consents issued in Christchurch - still the second highest month on record, after the 198 consents issued in June."
Gordon said that in Auckland, the other key region of housing under-supply, consents rose to their highest level since late 2006.
"That said, the pace of new home construction is probably still lagging behind what is needed to meet population growth."
Statistics NZ said the value of consented building work in July 2013 was $1,123 million – $698 million of residential work and $425 million of non-residential work.
"The trend for the number of new houses, including apartments, has increased 71% since the historic low point of March 2011," industry and labour statistics manager Blair Cardno said.
The trend is at its highest level in over five years, but is showing some signs of easing and is still 38% lower than its peak in January 2004.
Comparing the July figures with the same month a year ago, the main regional increases were in Canterbury, Auckland and Wellington.
In Canterbury there were 507 dwelling units approved, up 136 from the same time a year ago and the most in a month since March 2005.
Auckland's figure was up 148 to 556 - a rise of 36.3% compared with July 2012, while Wellington's figure rose 54 to 169.
Statistics NZ said that since Since September 4, 2010 - the date of the first Canterbury earthquake - some $1,157 million of Canterbury building consents have been identified as earthquake-related.
This includes consents for 1001 new dwellings, including apartments.
In July 2013, the value of building consents identified as earthquake-related in Canterbury was $62 million. This included 63 new dwellings.
In Auckland where there is a perceived shortage of about 30,000 houses, there have been 5439 new dwelling approvals in the past 12 months.
This represents an upturn from recent annual numbers of as low as 4000, but is still a long way short of the levels required if the region is to meet the targeted 39,000 new homes in three years under the terms of the Auckland Housing Accord between the Auckland Council and the Government.
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