Can you amend a planning permission once granted? Once planning permission is granted, the development which it authorises must take place in compliance with the conditions it imposes, see Practice Note: Planning conditions—key points. However, amendments to a consented development are often needed for various reasons after planning permission is granted. The Town and Country Planning Act 1990 (TCPA 1990) therefore contains powers permitting local planning authorities (LPAs) to grant amendments to planning permissions through one of the following: • applications for non-material amendments under TCPA 1990, s 96A • applications for variations of conditions attached to a planning permission under TCPA 1990, s 73 • in England only, once section 110 of the Levelling-up and Regeneration Act 2023 comes into force, applications for material variations in planning permission under TCPA 1990, s 73B Where amendments proposed cannot be dealt with via either TCPA 1990, s 96A, s 73 or s 73B, a new planning permission for an altered scheme of development will have to be