Part 1 INTRODUCTORY England and Wales Not yet in force Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: Sch. 12 para. 5 modified (temp.) by Planning (Consequential Provisions) (Wales) Act 2026 Sch. 5 para. 16 Sch. 12 para. 6(10) modified (temp.) by Planning (Consequential Provisions) (Wales) Act 2026 Sch. 5 para. 16 Sch. 12 para. 8(1) modified (temp.) by Planning (Consequential Provisions) (Wales) Act 2026 Sch. 5 para. 16 Sch. 12 para. 9 modified (temp.) by Planning (Consequential Provisions) (Wales) Act 2026 Sch. 5 para. 16 1Circumstances in which land is usable or unusable 2Interpretation Part 1