A deadline is looming for those seeking shelter at the Hobart Showgrounds to move on, as the Royal Agricultural Society of Tasmania prepares for the Royal Hobart Show.

Booming real estate prices and investors snapping up properties for lucrative short-term online rentals for tourists have pushed up rents, creating what some have described as a housing crisis in Tasmania's capital.

Society chief executive Scott Gadd said homeless people were currently living at the site in eight caravans and five tents, but that they would have to move by early September as the showgrounds transform into a "construction site".

One of those campers, Ray, was asked to leave his New Town private rental home after 24 years when it was sold earlier this year.

He has been camping at the showgrounds for two weeks, and is not sure where he will end up from September.

"I'll pitch a tent somewhere I suppose. In a park, or under a bridge like everyone else," Ray said.

Ray said he could no longer afford Hobart's private rental market, and had been on the housing waiting list for nine months.

"Rent these days is 95 per cent of your pension. You can't live on 5 per cent of your pension," he said.

"It's one big bloody shambles, isn't it?"

Mr Gadd said Housing Tasmania and charity Colony 47 had been "pretty good" since he called for help to deal with an influx of homeless working families at the showgrounds earlier this year.

But he said he did not know where those currently seeking shelter would go when the motor home park closes.

"I'm not really sure what their contingency plans are," he said.

"I assume some with caravans will just go off to other caravan parks and that's pretty easy.

"Others I suspect have fewer options and I don't know where they're going to end up.

"I'd like to see the people that are here now get into some more permanent accommodation."

Ray's tent at the Hobart Showgrounds. ( ABC News: Rhiana Whitson )

Housing Minister Roger Jaensch said Housing Connect workers had been asked to visit the Royal Hobart Showgrounds again on Tuesday.

"We have visited them before, and we are visiting them again today, and regularly, and we will ensure they are given all of the options that we can provide to give them somewhere safe and secure if they choose to leave the showgrounds," he said.

Mr Jaensch was speaking at a new Housing Tasmania unit that will house a disability support pensioner on the priority housing waiting list.

He said the State Government had built more than its target of 78 specially designed units for tenants with disability issues.

"I am pleased to tell you today as at the end of June there [are] in fact 81 units like this have been built right across Tasmania," he said.

Mr Jaensch said the Government planned to build more than 400 more homes this financial year.

"We are meeting and exceeding our targets and we are building more homes for Tasmanians who need them," he said.

"Over the next five years, $125 million will be spent building another 1,500 homes for Tasmanian who need them, including $20 million guaranteed for houses for people with disabilities."