Design Codes

Design Codes are used to ensure that a consistent approach to site development and implementation can be applied. HDA prepared one of the very first codes in Bedfordshire and has recently coded the open space for a Garden Village development in Hertfordshire.

Successful design codes articulate a vision through clear graphics and text identifying character and identity, movement, design principles and land use requirements. Elements of the code will be consistent throughout the scheme whilst specific elements will relate to the identity and character of areas within a scheme.

The image above is of a site in Northamptonshire, which has been designed to benefit from views over new parkland and wetland features. HDA masterplanned the site for outline planning and went onto code and oversee the delivery of the schemes landscape elements.

project examples


A residential led mixed use development for approximately 500 homes to the west of Hoddesdon. The project constituted a major development within the Green Belt. HDA has been involved with this project from the outset, providing initial baseline information and identifying landscape constraints and opportunities, which were used to inform the masterplan approach and layout. …


Land north of the Bromham Road, Biddenham is a mixed use development extending over 130 hectares between Biddenham and the River Great Ouse. It includes 1,300 dwellings, a neighbourhood centre, employment land, community and school facilities, a Country Park and nature reserve and the final section of the Bedford Western Bypass. HDA has provided landscape, …


On behalf of Redrow Homes, HDA’s long-term involvement in this project included preparation of the masterplan, parameter plans, Design and Access Statement for outline planning, landscape design coding and open space design. Part of the site is marshland, which is designated as a Site of Special Scientific Interest (SSSI). Wetland features together with parkland and …