Section 15CC Supplementary plansF1

(1)

Each relevant plan-making authority may prepare one or more documents, each of which is to be known as a “supplementary plan”.

(2)

A supplementary plan prepared by the Mayor of London may include requirements with respect to design that relate to development, or development of a particular description, throughout Greater London, which the Mayor considers should be met for planning permission for the development to be granted.

(3)

A supplementary plan prepared by a local planning authority may include—

(a)

policies (however expressed) in relation to the amount, type and location of, or timetable for, development at a specific site in their area or at two or more specific sites in their area which the authority consider to be nearby to each other;

(b)

other policies (however expressed) in relation to the use or development of land in the local planning authority’s area which are designed to achieve objectives that relate to the particular characteristics or circumstances of a specific site in their area or two or more specific sites in their area which the authority consider to be nearby to each other;

(c)

details of any infrastructure requirements, or requirements for affordable housing, to which development in accordance with any policies, included in the plan under paragraph (a) or (b), would give rise;

(d)

requirements with respect to design that relate to development, or development of a particular description, throughout the local planning authority’s area, in any part of their area or at one or more specific sites in their area, which the local planning authority consider should be met for planning permission for the development to be granted.

(4)

References in subsection (3) to development do not include minerals and waste development.

(5)

A supplementary plan prepared by a minerals and waste planning authority may include—

(a)

policies (however expressed) in relation to the amount, type and location of, or timetable for, minerals and waste development at one or more specific sites in the relevant area or at two or more specific sites in that area which the authority consider to be nearby to each other;

(b)

other policies (however expressed) in relation to—

(i)

minerals and waste development in the relevant area which are designed to achieve objectives that relate to the particular characteristics or circumstances of a specific site in that area or two or more specific sites in that area which the authority consider to be nearby to each other;

(ii)

development other than minerals and waste development, which are designed to secure that minerals and waste development can take place at a specific site in the relevant area or two or more specific sites in that area which the authority consider to be nearby to each other;

(c)

details of any infrastructure requirements to which minerals and waste development in accordance with any policies, included in the plan under paragraph (a) or (b), would give rise.

(6)

The Secretary of State may prescribe further matters which a supplementary plan may include.

(7)

A supplementary plan must be in general conformity with the spatial development strategy, if one is operative in relation to the area or a site to which the plan relates.

(8)

In preparing a supplementary plan, the relevant plan-making authority must have regard to any other part of the development plan which has effect for the area or a site to which the plan relates.

(9)

So far as the relevant plan-making authority consider appropriate, having regard to the subject matter of the supplementary plan, the plan must—

(a)

be designed to secure that the development and use of land in the authority’s area contribute to the mitigation of, and adaptation to, climate change, and

(b)

take account of any local nature recovery strategy which relates to all or part of the area to which the plan relates or to an area in which a site to which the plan relates is located, including in particular—

(i)

the areas identified in the strategy as areas which—

(A)

are, or could become, of particular importance for biodiversity, or

(B)

are areas where the recovery or enhancement of biodiversity could make a particular contribution to other environmental benefits,

(ii)

the priorities set out in the strategy for recovering or enhancing biodiversity, and

(iii)

the proposals set out in the strategy as to potential measures relating to those priorities.

(10)

A supplementary plan must not—

(a)

include anything which is not permitted or required by or under subsections (2) to (6), or

(b)

be inconsistent with or (in substance) repeat any national development management policy.

(11)

The Secretary of State may by regulations make provision about the preparation, withdrawal or revision of supplementary plans.

(12)

Regulations under subsection (11)—

(a)

may apply, or make provision corresponding to, any provision made by or under this Part in relation to the preparation, withdrawal or revision of a local plan, with or without modifications;

(b)

must require a proposed supplementary plan to be the subject of consultation with the public.

(13)

A supplementary plan has effect only in so far as it or any part of it is adopted or approved under this Part.

Annotations

Textual amendments

F1: Ss. 15A-15LH and cross-headings substituted for ss. 15-37 and cross-heading (3.3.2026 for the purpose of making regulations only, excluding ss. 15A-15AI, 15K and 15LE(2)(a)(b)(c)(k)(l)(3); 25.3.2026 in so far as not already in force for the insertion of ss. 15B(1)(2)(a)(c)-(i)(3)-(12), 15BA-15C, 15CA(1)-(6)(a)-(g)(i)(7)(8), 15CB-15EA, 15G-15HA, 15HC-15JB, 15L-15LD, 15LE(1)(2)(d)-(j)(m)-(p)(3)(4), 15LF-15LG and 15LH (in part), otherwise prosp.) by Levelling Up and Regeneration Act 2023 (c. 55), s. 255(3)(b), Sch. 7 (with s. 247); S.I. 2026/169, regs. 2, 3(b) (with Schs. 1, 2) (as amended by S.I. 2026/333, regs. 1(2), 2)

Notes on Part 2

Modifications

C1: Pt. 2 modified (temp.) (28.11.2008) by Local Government (Structural Changes) (Transitional Arrangements) (No.2) Regulations 2008 (S.I. 2008/2867), regs. 1(1), 21(1), 23(2) (with reg. 1(2))
C2: Pt. 2 modified (25.3.2026) by The Planning and Compulsory Purchase Act 2004 (Local Planning) (Modification and Consequential Amendments) (England) Regulations 2026 (S.I. 2026/170), regs. 1(2), 7
C3: Pt. 2 applied (25.3.2026) by The Town and Country Planning (Local Planning) (England) Regulations 2026 (S.I. 2026/186), regs. 1(2), 78(8) (with Sch.)
C4: Pt. 2 modified (16.4.2026) by S.I. 2026/170, reg. 7A (as inserted by The Planning and Compulsory Purchase Act 2004 (Local Planning) (Modification and Consequential Amendments) (England) (Amendment) Regulations 2026 (S.I. 2026/350), regs. 1(2), 2)