Owners face spot checks and fines of up to $4,000 if their rental properties are not insulated by 1 July under new regulations.  However, the Ministry of Business, Innovation and Employment (MBIE) has warned that installers will not have the capacity to insulate all of the 125,000-plus rental homes still to be fitted. The MBIE compliance and investigation team will continue checking properties for smoke alarms and, once the July deadline has passed, will include checks on insulation too. Officials have indicated there will be no grace period before fines are imposed.