Auburn Deputy Mayor Salim Mehajer says he has resigned from being the director of multiple companies and will no longer be a developer.

Councillor Mehajer, a colourful local identity, came to national attention when his lavish wedding closed a street in the Sydney suburb of Lidcombe in August, drawing widespread media interest.

In an email exchange between Councillor Mehajer and two other councillors seen by the ABC, Mehajer wrote that he had resigned from the business positions, telling colleagues he hoped to undertake a degree in medicine, "majoring in specialist mental health services".

The resignations come just days after Councillor Mehajer was urged to resign from council following charges of intimidation following a confrontation with the father of a Lindt Cafe siege survivor.