The Real Estate Institute of Tasmania recently released its June quarter report which showed a 8.5 per cent lift in house sales over the quarter but a 6.1 per cent decrease from the previous June.

Launceston house sales increased the most over the quarter out of the three regions by 12.2 per cent but were still down 7.5 per cent from the year before.

North-West sales were up 7.2 per cent over the quarter and 15 per cent up from 12 months ago.

The institute said in a statement there had been a continued withdrawal of investors from the market.

It said 2504 investors purchased rental properties across the state in 2018 but there had only been 979 investment sales in the first half of 2019.

"This is very concerning and will only add pressure to an already tense rental market," it said.

The institute said purchases by investors were strongest in Launceston, accounting for 28 per cent of all sales.

Investor purchases accounted for 18 per cent of all sales in Hobart and the North-West.

The median Tasmanian house price in June was $380,000.

In Hobart, the median price was $520,000 - a 7.5 per cent lift over the quarter and 2.8 per cent from the 12 months prior.

The median house price in Launceston was $335,000 which was a 1.1 per cent increase over the quarter and no change from the price 12 months beforehand.

In the North-West, the median price was $279,000 which was 1.5 per cent increase over three months and 0.4 per cent up from 12 months prior.

Sandy Bay was the most expensive place to live in the state with a median price of $939,000 while Queenstown and Rosebery remained the cheapest place to live with a median price of $100,000.

The institute noted first-home buyer numbers had dropped five per cent back to a more traditional level of the past few years.