| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | modified (prosp.) | Local Government (Wales) Act 1994 | 1994 c. 19 | s. 20(3) Sch. 5 Pt. 3 paras. 15(1) 20 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | extended (with modifications) | Environment Act 1995 | 1995 c. 25 | Sch. 9 para. 13(4) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | amended | The Environment Act 1995 (Consequential Amendments) Regulations 1996 | 1996 No. 593 | reg. 2 Sch. 1 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | transfer of powers in part (W) | The National Assembly for Wales (Transfer of Functions) Order 1999 | 1999 No. 672 | art. 2 Sch. 1 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | modified | Planning and Compulsory Purchase Act 2004 | 2004 c. 5 | s. 38 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | applied | Planning and Compulsory Purchase Act 2004 | 2004 c. 5 | Sch. 4 para. 9(2) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | modified | The National Assembly for Wales Commission (Crown Status) (No. 2) Order 2007 | 2007 No. 1353 | art. 5 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | applied (with modifications) | The London Legacy Development Corporation (Planning Functions) Order 2012 | 2012 No. 2167 | art. 7 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 4 para. 1 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | power to amend conferred | Levelling-up and Regeneration Act 2023 | 2023 c. 55 | s. 132 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | applied by 1992 c. 42, s. 17(4) (as substituted) | Planning and Infrastructure Act 2025 | 2025 c. 34 | s. 43(1) | Not yet | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 26H-26K and cross-heading | inserted | Enterprise and Regulatory Reform Act 2013 | 2013 c. 24 | s. 61 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 26A 26B and cross-heading | inserted | Enterprise and Regulatory Reform Act 2013 | 2013 c. 24 | s. 60(2) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 26C-26G and cross-heading | inserted | Enterprise and Regulatory Reform Act 2013 | 2013 c. 24 | s. 60(3) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 26L 26M and cross-heading | inserted | Historic Environment (Wales) Act 2016 | 2016 anaw 4 | s. 28(1) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 26L cross-heading | omitted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 114 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 29 heading | words inserted | Levelling-up and Regeneration Act 2023 | 2023 c. 55 | s. 105(3)(a) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 49 heading | words inserted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 127(a) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 54 heading | word omitted | Historic Environment (Wales) Act 2016 | 2016 anaw 4 | s. 30(5) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 76 heading | word omitted | Historic Environment (Wales) Act 2016 | 2016 anaw 4 | s. 30(5) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Pt. 3 | applied (with modifications) | The Planning (Listed Buildings and Conservation Areas) (Heritage Partnership Agreements) Regulations 2014 | 2014 No. 550 | reg. 7 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 88D heading | word omitted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 150(a) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 81A 81B and cross-heading | inserted | Planning and Compulsory Purchase Act 2004 | 2004 c. 5 | s. 43(3) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Pt. 4 | applied (with modifications) | The Planning (Listed Buildings and Conservation Areas) (Heritage Partnership Agreements) Regulations 2014 | 2014 No. 550 | reg. 7 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(1)-(5)(6) | applied (Isles of Scilly) (with modifications) | The Town and Country Planning (Isles of Scilly) Order 2013 | 2013 No. 2148 | art. 3 Sch. 1 | Yes |   Words “83, 84,” in 1990 c. 9, s. 92(2)(a) repealed (7.6.2006) by 2004 c. 5, Sch. 9; S.I. 2006/1281, art. 2(f)(iv) |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(1) | words inserted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 94(a) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(2) | omitted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 94(b) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(4) | words inserted | Historic Environment (Wales) Act 2016 | 2016 anaw 4 | s. 26(1)(a)(i) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(4) | words omitted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 94(c) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(4)(a) | words omitted | Historic Environment (Wales) Act 2016 | 2016 anaw 4 | s. 26(1)(a)(ii) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(4A) | inserted | Historic Environment (Wales) Act 2016 | 2016 anaw 4 | s. 26(1)(b) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(4A) | omitted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 94(d) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(5) | applied | Channel Tunnel Rail Link Act 1996 | 1996 c. 61 | s. 12 Sch. 7 para. 1(5) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(5) | applied | Channel Tunnel Rail Link Act 1996 | 1996 c. 61 | s. 12 Sch. 7 para. 2(3) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(5) | words inserted | Enterprise and Regulatory Reform Act 2013 | 2013 c. 24 | Sch. 17 para. 8(2) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(5A) | inserted | Enterprise and Regulatory Reform Act 2013 | 2013 c. 24 | Sch. 17 para. 8(3) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 1(5A) | words omitted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 94(e) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(1) | amended (prosp.) | Local Government (Wales) Act 1994 | 1994 c. 19 | s. 20(4) Sch. 6 Pt. 2 para. 25(1)(a) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(1)-(3)(8) | applied (Isles of Scilly) (with modifications) | The Town and Country Planning (Isles of Scilly) Order 2013 | 2013 No. 2148 | art. 3 Sch. 1 | Yes |   Words “83, 84,” in 1990 c. 9, s. 92(2)(a) repealed (7.6.2006) by 2004 c. 5, Sch. 9; S.I. 2006/1281, art. 2(f)(iv) |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(1) | words omitted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 95(a)(i) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(1) | word inserted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 95(a)(ii) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(1)(a) | repealed in part (prosp.) | Local Government (Wales) Act 1994 | 1994 c. 19 | s. 20(4) 66(8) Sch. 6 Pt. 2 para. 25(1)(a) Sch. 18 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(1)(c) | added (prosp.) | Local Government (Wales) Act 1994 | 1994 c. 19 | s. 20(4) Sch. 6 Pt. 2 para. 25(1)(a) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(1)(c) and word | omitted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 95(a)(iii) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(3) | words inserted | Historic Environment (Wales) Act 2016 | 2016 anaw 4 | s. 26(2)(a)(i) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(3) | words substituted | Historic Environment (Wales) Act 2016 | 2016 anaw 4 | s. 26(2)(a)(ii) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(3) | words omitted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 95(b)(i) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(3) | words substituted | Historic Environment (Wales) Act 2023 | 2023 asc 3 | Sch. 13 para. 95(b)(ii) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(3)(a) | amended (prosp.) | Local Government (Wales) Act 1994 | 1994 c. 19 | s. 20(4) Sch. 6 Pt. 2 para. 25(1)(b) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 2(3)(a) | words omitted | Historic Environment (Wales) Act 2016 | 2016 anaw 4 | s. 26(2)(b) | Yes | |