Three-strike laws for NSW councillors

New three-strikes laws designed to help rid NSW local government ranks of dodgy councillors will not be retrospective, but will send a "strong message" to those who do the wrong thing, the minister says.

The government has come under pressure to act since one Sydney deputy mayor, Salim Mehajer, grabbed headlines and provoked the ire of locals with his traffic-stopping wedding last month.

With his new profile came questions about decisions Mr Mehajer had made as a councillor, and whether - as a property developer - he should have been allowed to vote in matters that might benefit him financially.

NSW Local Government Minister Paul Toole is introducing a number of legislative amendments to parliament on Tuesday, which he says will help restore community confidence in the state's local councils.

"The NSW government is streamlining the process when it comes to councillor misconduct," Mr Toole told reporters on Tuesday.

"If a councillor is suspended on three occasions, they will be automatically disqualified from civic office for a period of up to five years."

Mr Toole had already flagged plans to overturn a controversial 2012 edit to the state's Local Government Act, known as section 451, that allowed councillors to vote on planning decisions from which they could benefit financially, as long as they make the appropriate declarations.

Under his proposed amendments, councillors would be banned from voting when they have a pecuniary interest.

"I've got to say that in NSW, most councillors do the right thing," Mr Toole said.

"However, to those minority, we're sending a very strong message."

He said he would wait to see the outcome of an extraordinary general meeting announced by Auburn Council for Wednesday night, at which some councillors will call for Mr Mehajer to resign.

"We'll be interested to see what the findings are, but that at the moment is a matter for the council," he said.

He said if members of the public were concerned about their representation on council they would have an opportunity to make their views known at next year's local government elections.