The latest figures from RP Data show house prices in Brisbane remained flat in December, while the median value of units fell.

The December price for Brisbane houses was $440,000, while unit prices fell 2.8 per cent for the month to a median of $363,000.

RP Data spokesman Cameron Kusher says median values in Brisbane remain below where they were five years ago.

"It seems as though the rate of decline is actually slowing," he said.

"If we have a look back to December last year, Brisbane home prices were down about 7.5 per cent - maybe more than 7.5 per cent - so certainly conditions have improved.

"But we have still recorded back-to-back years in which homes values have fallen."

Sydney remains Australia's most expensive capital where median house price is $665,000, compared with $325,000 in Hobart, which is lowest-priced capital city.