Yes — as long as the granny flat is a certified Class 1a dwelling and approved by council, it can be lived in full time.

Expandify homes are:

Built to Class 1a NCC standards

Designed for permanent, year-round living

Eligible for occupancy certification

They include all essential features for residential use — kitchen, bathroom, laundry, insulation, electrical, and structural certification — making them legally suitable for long-term living, whether for family members, tenants, or as a primary residence.