Police have received reports of people doorknocking Housing Tasmania properties in the northern suburbs in recent weeks, claiming they are ``authorised property managers''.

The doorknockers have requested personal information, but no crimes have been linked to these visits.

Tasmania Police used a Facebook post to publicise the warning this week.

Not-for-profit housing provider Community Housing Ltd will take over the management of almost 1200 Housing Tasmania properties in Launceston in July.

This will include properties at Ravenswood, Waverley, Mowbray, Rocherlea and Mayfield.

Launceston Inspector Michael Johnston said people were taking advantage of the situation.

He said legitimate Community Housing Ltd staff would have matching ``Community Housing Ltd'' photographic identification and name tags.

Tasmanian state manager Brett Wake said that apart from hosting information sessions, Community Housing Ltd was yet to doorknock in Tasmania.

He said that visits would likely be closer to July and would be done in partnership with Housing Tasmania.

``We will be writing to people and telling them when we are coming,'' Mr Wake said.

``With that letter, they will also get photos of the people who will be doing the doorknocking.

``Those people will be wearing photo identification and badges, so they will be easily identifiable.

``So people should only answer the door to those people with the identification.

``And when we are going out, we will also put the information up on our info line.''

Mr Wake advised people to call the Community Housing Ltd info line on 6344 6825 or visit www.chl.org.au for more information.

He urged people to contact police if they had any suspicious visits.

For non-emergencies, people can call the Police Assistance Line on 131 444 or Crime Stoppers on 1800 333 000.

Email: ctang@examiner.com.au