Land Information New Zealand deputy chief executive Russell Turner said the data did not provide a register of foreign ownership, "but it can add to the picture of what's happening with property in New Zealand".
He said property transfers rose by more than 12,000 in the most recent quarter, but there was a similar split between foreign and New Zealand residents to the previous quarter.
The data has been collected since October, and Turner said a clear picture would develop once a year's data had been collected.
The newest data showed that non-residents were also responsible for 3 per cent of the houses sold in New Zealand between April and June, also one point higher than the previous period.