PPS 21 Sustainable Development in the Countryside·Page 37·5.50, 5.51
Justification – Planning Support for Agricultural and Forestry Operations
The policy recognises the ongoing changes in agriculture and forestry enterprises and supports operational needs through the planning process, including certain permitted development under the Planning (General Development) Order (Northern Ireland) 1993.
As agriculture and forestry continue to change and develop, it is important that the planning process continues to support the operational needs of these enterprises.
Under the Planning (General Development) Order (Northern Ireland) 1993, known as the "GDO", certain development relating to agriculture and forestry is permitted development i.e. a planning application is not required as permission is deemed to be granted. Where a proposal is not permitted development and express permission is required, planning permission will be granted for agricultural and forestry buildings/works subject to the criteria stated, as well as other planning criteria and policy requirements.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/PPS 21 - Sustainable Development in the Countryside.pdf