The upgrade will involve the construction of new parenting facilities, replacement of the public toilets fronting Paterson Street, and construction of the Changing Places bathroom.

For people with disabilities, the upgrades will be a welcome addition.

Chris Duffy, whose son Jack was the inspiration for the organisation Just Like Jack, said the redevelopment was awesome to see.

"It gives us so much more freedom, us and many others in a similar situation, to be able to get out," he said.

Mr Duffy said they were previously restricted by lack of access to adequate facilities, to the point where he even had to put his son on the floor.

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The new bathroom will include an ambulant toilet, shower, hand basin, change table and ceiling hoist.

However, Changing Places toilets are different to the standard accessible toilets, and provide extra features.

There will be secure access to the Changing Places facility provided through the Master Locksmiths Access Key system - an initiative that allows people with a disability to have secure access to dedicated public facilities.

Launceston mayor Albert van Zetten said the current facilities were reaching the end of their life span.

"We regularly hear from parents that having access to modern, high amenity parenting facilities is something they value," he said.

"I'm pleased that through this project we can replace our existing facilities with a more contemporary and more accessible offering for parents visiting our CBD."

The project is a part of the City of Launceston's Accelerated Capital Works Program which is an initiative of the Care and Recovery Package.

Councillor van Zetten said the City of Launceston will continue to roll out accessibility projects in line with the Access Framework.

Deputy Mayor Danny Gibson said the project aligned with the city's goals to become more accessible.

The construction works are expected to take around four months to complete.