Ontario will be reviewing 82 municipalities with an eye to cost cutting.
The move comes after the Progressive Conservative government slashed the size of Toronto's city council nearly in half last year.
The government has tapped two experts to conduct the review of Halton, York, Durham, Waterloo, Niagara, Peel, Muskoka District, Oxford County, the County of Simcoe and their lower-tier municipalities.
Municipal Affairs Minister Steve Clark says in a statement that the aim is to improve how regional government works, make better use of taxpayer money and make it easier for people and businesses to access services.
One of the questions the experts will consider is whether two-tier structures are appropriate for all of the municipalities.
Michael Fenn, a deputy minister and founding CEO of regional transportation agency Metrolinx, and Ken Seiling, who recently retired as Waterloo Region chair, are set to give their recommendations to the province by early summer.