Mr Hewlett (38) had been an unsuccessful bidder in an auction for the Otago Community Hospice charity house the previous weekend, narrowly missing out on that property which sold for $156,000.
He had more success on Saturday, making the final bid of $135,000 for another three bedroom relocatable house, which had been built in Doon St, Mosgiel.
Mr Hewlett, who lives in Bradford with his wife, Margaret, and children, said the 103sq m, fully insulated house with an open plan kitchen, dining area and lounge, had been bought as an investment property.
It would be transferred to a section in Kaikorai Valley.
About 70 people attended the auction, which was conducted by Noel Jenkins.
The proceeds will go to Canteen, which supports young people with cancer, and to the Life Education Trust and the Otago Community Hospice.
Rotary Club project manager Paul Seddon said he was "reasonably happy" with the outcome, which also reflected the relatively quiet market.
The successful project had aimed to build "fellowship and comradeship" among club members, and to raise money for charity, Mr Seddon said.
Construction had started in August.
Sharon Conaboy, the Canteen Otago-Southland team leader, said it was "just fantastic" the Rotary club had gone to such efforts to raise money for Canteen and other charities.
