Northern Territory Consolidated Regulations Northern Territory Consolidated RegulationsA person shall not construct more than one Class 1 Building on an allotment except where:
(a) a planning scheme or interim development control order allows the construction; or
(b) the allotment is not less than 4 ha in area, not more than 2 buildings are constructed and both buildings comply with the Regulations in this Part in relation to siting requirements for separate sites.