The company, which has a village in Dunedin, reported operating earnings of $30.7million in the period, up 39% on the $49.3million reported in the previous corresponding period.
Revenue increased 29% to $63.8million from $49.3million and the reported profit soared 44% to $24.7million from $17.1million in the pcp.
Craigs Investment Partners broker Chris Timms said he continued to be encouraged by clear evidence of the maturing of Summerset's business - especially further growth in resales volume and increasing diversification of earnings streams.
Along with growing customer demand, the latest figures continued to support Summerset as Craigs' No1 pick in the retirement sector, he said.
Summerset chief executive Julian Cook said the result was a record for any half-year period for the group and strengthened its position as the fastest-growing retirement village provider in New Zealand.
The company experienced a strong six-month period with increased sales and number of homes delivered, particularly in the second quarter when it delivered the most quarterly sales in the company's history.
Summerset's operating cash flow grew 33% to $84.4million, up from $63.6million for the first six months of 2015.
The total value of assets grew to $1.5billion.
New sales of occupation rights were 14% higher and resales 12% higher then the pcp.
A total 190 homes were delivered in nine villages. Mr Cook said it was a build record for the company in six months.
``This ensures we're on track to meet our build rate target of 400 homes delivered in 2016.''
Mr Timms said resale profits increased 48% on the back of resale margins improving to 19.9% from 16.7%. While resale margins could be volatile, the improved result reflected strong growth in regional North Island house prices where Summerset's portfolio was more heavily weighted than listed peers.
Development profits were up 38%, driven by a combination of volume growth, margin growth and increasing average value of new units - the latter reflecting an increasing proportion of new units being built in Auckland.
``This trend is likely to continue with more than half of Summerset's land bank located in Auckland.''
The main area of concern Craigs had for Summerset was about its balance sheet but Mr Timms said it too had surprised to the upside.
Net debt increased slightly to $253.3million.
The company did not give firm full-year guidance except to say Ellerslie village had strong interest and presale numbers were the best of any of its Auckland village launches.
Craigs expected to upgrade its full-year estimates after the results.
Summerset shares last traded at $5.18, up 4.44%.
