Planning Portal

Glossary: C


  • CAA - Civil Aviation Authority
  • CRISP - Community Regeneration and Improvement Special Programme
  • CPA - Countryside Policy Area
  • CTA - Community Technical Aid


  • Catchment - The area drained, either naturally or with artificial assistance, by a watercourse, including all drainage channels, tributaries, floodplains, estuaries and areas of water storage.
  • Cell and Cellular - A cell is the area of geographical coverage from a radio base station. "Cellular" describes such systems, but is often used to distinguish the original analogue systems from the later digital PCN systems, although the latter themselves have cells.
  • Civic Amenity Site - Site for the collection of recyclable materials and bulky household waste.
  • Code System Operator - An operator of a telecommunications system under Schedule 2 of the Telecommunications Act 1984, known as the ‘Telecommunications Code’.
  • Commercial Waste - Waste from premises used for the purpose of trade or business, sport, recreation or entertainment.
  • Common Landlord Area - An area defined by the Housing Selection Scheme comprising one or more social landlords but which is considered homogeneous for the purposes of housing allocations. CLA’s are generally smaller than Local Housing Areas to allow applicants to be more specific re areas of choice.
  • Compost - Organic matter decomposed aerobically or anaerobically and used as a fertiliser or soil conditioner.
  • Conservation Area - Area of high architectural or historical interest within towns, designated under the Planning (NI) Order 1991 and identified in Development Plans.
  • Contiguous Development Zone (CDZ) - The continuous built up area centred on Belfast and which extends in an arc from Jordanstown to Knocknagoney and includes Metropolitan Carrickfergus, Metropolitan Newtownabbey, Belfast City, Metropolitan Lisburn, Metropolitan Castlereagh and Metropolitan North Down.
  • Contaminated Land - land which has been subject to the addition of a material or materials to such a degree as to render it unfit for its intended purpose.
  • Construction/Demolition Waste - Masonry and rubble wastes arising from the demolition or construction of buildings or other civil engineering structures.
  • Controlled waste - Refers to household/municipal, industrial and commercial waste.
  • Convergence - Denotes the meeting of separate communications technologies so that they no longer have unique associations with particular functions. For instance, an internet television can combine some of the functions of a radio, television, personal computer and telephone (source DTI).
  • Culvert - A structure with integral sides, soffit and invert, including a pipe that contains a watercourse as it passes through or beneath a road, railway, building, embankment etc, or below ground.
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