Metro Realty agent Lawrence Peeters confirmed the sale yesterday, but would not disclose the buyer or the price paid.
Mr Peeters said he had been acting for the Southland Building Society and there had been "very strong buyer interest" and "multiple offers".
"It was an excellent result both for the company and myself, and for the bank, of course."
The 900sq m bluestone house, on 17.4ha of land, was built for the Corish family, now of Oamaru.
It had a rateable value of $3.75 million.