Lawyers for the Bindura Residents Association registered the group last week with the Deeds Office in Harare, the capital, two months after its launch.
Members of the association last month said they were threatened and followed after they started the group, leading some of them to go into hiding. Some of the founders are students at the Bindura University of Science and Education.
The group, which sought police authorization Monday to hold meetings with residents, said it will fight corruption and political interference with essential service delivery.
Association spokesman Tinashe Madamombe told reporter Jonga Kandemiiri of VOA's Studio 7 for Zimbabwe that the association intends to take the ruling party to task for putting up billboards in town without paying as normally required by the city council.
Bindura is the administrative center for Mashonaland Central Province.