Contentious laws such as council mergers or the greyhound ban would be put to community focus groups to stop "half-baked policies" being rushed through NSW Parliament under a "revolutionary proposal" to be considered on Tuesday.

One Nation MP Mark Latham will move a motion to overhaul law-making in the upper house following lobbying from former NSW Treasury secretary Percy Allan.

Former NSW Treasury secretary Percy Allan has teamed up with One Nation leader Mark Latham to overhaul how NSW Parliament passes contentious laws. Credit:Louise Kennerley, Dominic Lorrimer

A long-time public servant and now an academic, Mr Allan has been urging Premier Gladys Berejiklian, the Labor opposition and crossbench MPs to consider a new approach to controversial laws.

Mr Allan said the upper house could be the most "informed house of review in the country" if it changed how it developed critical policies.