Landlords and renters will have to wait to see the finer details of changes to the Residential Tenancies Act

From next month it will be harder to evict tenants - and they will be able to make minor decor changes and install fibre broadband.

Renters United spokesperson Robert Whitaker says they need to tighten criteria on moving a tenant out for a family member - or for renovation.

He says it's very subjective - and there's no room to challenge if the family member doesn't move in.

Whitaker says there will be a published list of changes tenants can make to a property - but he expects they'll be things like hanging paintings and painting walls..