CRZ is classified in to CRZ-I, CRZ-II, CRZ-III, CRZ -IV and CRZ-V. In CRZ-II Construction is Permitted as per Regulations Prevailing on 19/2/1991 when the First CRZ Notification was Notified. Also Permitted in CRZ-III, IV and V as per Recent CRZ Notification dated 6jan 2011