The Residential Developments Supplementary Planning Document (SPD) was adopted on 1 June 2026 following public consultation which took place from 26 February 2026 until 26 March 2026.

The Residential Developments SPD reflects and expands upon the housing policies in the adopted Crawley Borough Local Plan 2023 to 2040, providing supporting guidance to assist applicants in meeting the Local Plan requirements. This includes the policies in relation to:

• housing mix
• affordable housing
• thresholds: borough-wide and town centre
• small sites
• care provision
• off-site provisions and financial contributions
• tenure split and options
• exceptional circumstances and alternative arrangements
• procedures and requirements
• health impact assessment
• space standards
• self and custom build
• build to rent
• housing in multiple occupation

The SPD forms part of the development plan for Crawley and is an important consideration in determining planning applications. It replaces the Affordable Housing SPD 2017 and the Affordable Housing Summary Guidance for Small Residential Developments 2017.