Smoke alarm Legislation
As a landlord, you must ensure smoke alarms are correctly installed and meet the technical requirements. Smoke alarms must be working at the start of each new tenancy and remain in working order during the tenancy.
All rental homes and boarding houses (including any detached sleepouts or caravans) must have working smoke alarms, which must be installed within 3 meters of each bedroom door or in every room where a person sleeps, and on each level or storey of a multi-level or multi-storey home
In addition smoke alarms must be photoelectric, have a battery life of at least 8 years (or be a hard-wired system), be installed according to the manufacturer’s instructions, and meet relevant international standards
The tenant is responsible for replacing the batteries (if required) during their tenancy, we encourage tenants to check smoke alarms every 6 months.
For technical specifications and installation https://www.tenancy.govt.nz/assets/Uploads/Tenancy/smoke-alarm-requirements.pdf