Statistics Canada says its new housing price index rose 0.3 per cent in June, after a 0.4 per cent gain in May.
On an annual basis, the index was 2.1 per cent higher in June than a year earlier.
The agency says good market conditions in Toronto and Oshawa pushed up prices there and boosted the index as a whole.
New home prices in the two communities jumped 0.8 per cent between May and June and were 4.7 per cent higher than in June 2010.
Winnipeg prices were up 0.7 per cent in June compared with May, mainly because of higher material costs.
In June, prices remained unchanged from May in 10 of the 21 metropolitan regions surveyed and the most significant drop was in Calgary, where builders offered deals to promote sales.