The building has been out of use for years
Ramsey's tram station is up and running again after several years.
Isle of Man Transport is asking people to take 'extra care' in the Parsonage Road area.
Deputy Chair of the commissioners Rob Cowell says they are 'delighted' to see it back in use because the building was a bit of an 'eyesore'.
He says the support from one of its MHKs helped in making the building usable again:
President of Tynwald to retire from politics
Patients raise concerns over difficulties booking GP appointments
'Should I stay or should I go?': Students weigh up a life and career on the Isle of Man
Last day for fundraisers taking on Mountain Course challenge