Residential Tenancies Act 1986, ss 66O, 66P
Landlords can make house rules about the boarding house and the services there. They have to keep copies of the house rules (and fire evacuation procedures) on display. The landlord must do everything reasonable to make sure the house rules are followed, and they have to enforce them fairly and consistently. They can change the house rules, as long as they give all the tenants one week’s notice of the change.
You can go to the Tenancy Tribunal to challenge a house rule if it’s inconsistent with your rights in the Residential Tenancies Act (for example, if a rule says you have to give the landlord one week’s notice to end the tenancy rather than the 48 hours required by the Act) or if it breaches other laws, like privacy laws.