Supplementary Planning documents
Supplementary Planning Documents (SPDs) explain in more detail how policies in the Council's adopted Core Strategy and Policies Development Plan Document will be applied.
Updated Climate Change SPD
The Climate Change SPD outlines how new developments in the borough can contribute to reducing the effects of climate change and adapting effectively to a changing climate. This SPD was adopted on 29 June 2026, which was an update to the previous Climate Change SPD, adopted in April 2024. The SPD also aligns with the Spelthorne’s Climate Change Strategy 2022-2030 and supports the Council’s ambition to achieve Net Zero by 2030.
The SPD and associated documents can be downloaded here:
Affordable Housing SPD
The Affordable Housing SPD, adopted on 29 June 2026, provides additional guidance to support the implementation of the Spelthorne Local Plan 2024- 2039/40 and applies to planning applications that attract a policy requirement to provide affordable housing. The SPD sets out when affordable housing is required, what type should be provided, how it should be delivered and funded, and how viability and financial contributions will be assessed and reviewed.
The SPD and associated documents can be downloaded here:
Affordable Housing Supplementary Planning Document Adoption Statement June 2026.pdf (pdf, 196.55 KB)
Design of residential extensions and new residential development
The purpose of this document is to elaborate on the design policies set out in the Core Strategy and in particular Policy EN1. It is intended to be a practical guide to help achieve high standards of design across the whole Borough and is aimed at a wide audience which includes home owners, architects, developers and those affected by planning proposals.
Design of Residential Extensions and New Residential Development (pdf, 1.74 MB)
Flooding
The purpose of the Flooding SPD is to elaborate on Policy LO1 set out in the Council's Core Strategy and Policies Development Plan Document (DPD). It is intended to ensure that the Council provides clear guidance on the factors which need to be taken into account in preparing and determining applications for development in areas of flood risk. The SPD in particular provides further guidance on how flood risk may be managed.
SEA Determination Statement (pdf, 36.61 KB)
Housing Size and Type SPD
The purpose of the Housing Size and Type SPD is to elaborate on Policy HO4 set out in the Council's Core Strategy and Policies DPD. It is intended to ensure that the Council secures the right mix of dwellings providing one, two, three and four plus bedrooms in new development, so that, together with the existing housing stock, the housing needs of the Borough are best met. The SPD in particular provides further guidance on the dwelling mix required in developments which incorporate an element of affordable housing.
Housing Size and Type SPD (pdf, 397.38 KB)
Parking standards
Managing the Development of Houses in Multiple Occupation (HMO) SPD
The HMO SPD builds on Policies PS2 and H1 of the Spelthorne Local Plan 2024 – 2039/40 and follows the confirmation of Article 4 Directions across the whole Borough that now require all new HMO proposals to secure planning permission. The SPD sets out the criteria against which all planning applications for HMOs will be considered.
The HMO SPD document (pdf, 7 MB) will shortly be augmented with a Summary and a Glossary of Key Terms.