# The Planning (Northern Ireland) Order 1991, Chapter: “Development” and requirement of planning permission




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Source: https://www.legislation.gov.uk/nisi/1991/1220/part/IV/chapter (the official version)
Page: https://openlegislation.uk/planning-northern-ireland-order-1991/part-IV/chapter
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.