Renters' advocates are warning the government's healthy homes deadlines deferrals will mean more people are hospitalised with preventable illnesses, while landlords will get wealthier.

The pushed out deadlines are among several updated housing policies released this morning.

Other policies include registration, training, and licenses for residential property managers - due to come into force in 2026; and standardising meth residue limits for rentals.

Renters United spokesperson Geordie Rogers spoke to Māni Dunlop.