A solicitor will be based at the Migrant Resource Centre in Launceston three days a week from August 19, and duty solicitor services will also be offered for tenancy matters in the Magistrates Court.

Principal solicitor Meredith Barton said the service would become permanent if it proved to be effective.

"The way the market's going now, we really need that actual face-to-face ability to help people in the North," she said.

"The Launceston Community Legal Centre does work for us at the moment, but they don't take on full case and court work.

"Having a solicitor in Launceston will make the Tenants' Union more of a statewide service."

The Tenants' Union Hobart phone number remains the first point of contact, but matters based in the North will be passed on to the Launceston solicitor.

The funding was provided through the state government's Solicitors' Guarantee Fund.

The Tenants' Union provides advice on how to present tenancy cases if they go to court, and can represent tenants in certain circumstances.

Linda Del Pio had been living in a unit with her daughter in Launceston for several years before she found out her landlord was living next door.

"The owner was breaching the lease agreement in regards to my privacy. He would pop over a fair bit unannounced, appearing at the back door sometimes," she said.

"Then he'd start doing maintenance on the property by himself, and get me to do odd jobs as well.

"I went along with it because he was the owner and I needed to stay in this house for my daughter's sake."

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One day, Ms Del Pio received a letter stating she would have to start paying for her water - a condition that was not included in her tenancy agreement.

Her landlord's behaviour also started to become more sinister.

"He would intimidate me by standing over my and making really off comments," Ms Del Pio said.

"One time I woke up to someone banging on the back door. He was there with a mate wanting to look at the oven. The real estate agent had to call him and ask him to leave."

When she complained about his behaviour, the real estate agent had only one solution: to move.

So Ms Del Pio did move house, but her real estate agent claimed she had broken her lease.

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"I told them it wasn't a break of lease because I had given two weeks notice, the carpets were cleaned and I had paid rent until I moved out," she said.

"They didn't put in a claim for bond. They kept chasing me for outstanding rent - even to this day."

Ms Del Pio was keen to access the Tenants' Union services, finding it difficult to get advocacy from afar.

She said the balance needed to be shifted back towards tenants' rights.

"Tenants get a mark against their name, and now it's so tough in the rental market that if you have a mark against you, it's impossible," Ms Del Pio said.

"There needs to be some sort of blacklist for bad landlords."

Since it was established about five years ago, the number of investigations undertaken by the Tasmanian Residential Tenancy Commissioner has continued to grow.

The RTC investigated 168 complains from tenants during the 2018-19 financial year, up from the 141 investigations the previous 12 months.

Of the 168, 69 resolved in favour of the tenant, 26 were withdrawn, 17 remained under investigation and the remainder were not found in breach, or there was insufficient evidence.

Heating, bathroom and toilet, hot water service and stove top and oven complaints were the most common.