An inner west mega council could be established in the wake of contentious meetings called in response to the Premier's push for voluntary amalgamations.

Leichhardt, Marrickville and Ashfield councils have endorsed the idea of a merger, should the Baird government proceed with compulsory amalgamations across the city.

But the council resolutions have been controversial, with independent and Greens councillors accusing Labor and Liberal counterparts of rolling over to implement the government's agenda.

When Premer Mike Baird and Local Government Minister Paul Toole​ announced last month they would give councils four weeks to reconsider their merger plans, a number of councils stiffened their opposition to any amalgamations.