What is a Design & Access Statement and when do you need one?

If you have submitted a planning application in England, you will almost certainly have encountered a Design & Access Statement. They are required for a wide range of applications — yet there is persistent confusion about exactly when one is needed, what it must contain, and how to write one that actually supports the case for approval.

This guide sets out the rules clearly, with practical advice for architects and planning consultants preparing applications.

What is a Design & Access Statement?

A Design & Access Statement (DAS) is a document that explains the design principles and concepts behind a planning application. It sets out how the proposed development responds to its site and surroundings, how it relates to local planning policy, and how it addresses access for all users.

The DAS is not simply a description of what is proposed — it is an argument for why it should be approved. A well-written statement demonstrates that the applicant has understood the site, engaged with the relevant policies, and made considered design decisions. A poorly written one describes the project without justifying it, which gives planning officers little basis for a positive recommendation.

When is a Design & Access Statement required?

The requirement for a DAS is set out in Article 9 of the Town and Country Planning (Development Management Procedure) (England) Order 2015. The rules depend on application type and location:

Householder applications

A DAS is required for householder applications that fall within a designated area — which includes conservation areas, National Parks, Areas of Outstanding Natural Beauty (AONBs), and the Broads. For householder applications outside designated areas, a DAS is not required, though many applicants provide one anyway as supporting documentation.

Major applications

A DAS is required for all major development applications. Major development means residential proposals of 10 or more dwellings, or applications where the floor space to be created is 1,000 square metres or more. Commercial and mixed-use major applications also require a DAS.

Listed buildings

Applications for listed building consent always require a DAS, regardless of scale. The heritage aspects of the statement become particularly important — officers will want to understand how the proposal responds to the character and significance of the listed building.

Small residential applications in practice

For applications outside these categories — such as householder extensions outside designated areas, or small residential schemes of fewer than 10 dwellings — a DAS is technically not required. However, many local planning authorities request one as additional information, and providing a well-argued statement can significantly improve the prospects of a positive decision. Most professional architects include one as a matter of course.

What must a Design & Access Statement contain?

The Town and Country Planning (Development Management Procedure) Order sets out the required content. A DAS must address the following elements — though in practice these are woven through the document rather than presented as separate headed sections:

• Amount — the scale and quantum of development proposed
• Layout — how buildings and spaces relate to one another and to the surrounding context
• Scale — the height, massing, and relationship to neighbouring properties
• Landscaping — hard and soft landscaping proposals
• Appearance — materials, architectural detailing, and visual character
• Access — how the development provides access for all users, including those with disabilities

In practice, a professional DAS is structured around sections that planning officers find most useful: site and surroundings, the proposed development, design rationale and principles, planning policy context, and neighbour impact assessment. The six statutory elements above are addressed within this structure rather than as separate chapters.

The planning policy section is particularly important. A DAS must engage with both national policy (the National Planning Policy Framework) and the relevant local plan policies for the specific council. Citing the correct policies and demonstrating compliance with them is essential — a statement that ignores policy or cites the wrong policy codes can undermine an otherwise strong application.

How long should a Design & Access Statement be?

There is no prescribed length, but as a general guide:

• Householder applications — typically 4 to 8 pages. Shorter statements are acceptable for straightforward applications in non-designated areas; applications in conservation areas or involving listed buildings warrant more detail.
• Small residential (fewer than 10 units) — typically 8 to 15 pages, with detailed policy sections and site analysis.
• Major applications — typically 20 to 50 pages or more, often accompanied by separate heritage statements, transport assessments, and sustainability reports.

Length is less important than quality. A concise, well-argued 8-page statement will usually outperform a generic 20-page document that simply describes the proposal without making a case for it.

Common mistakes to avoid

Planning officers read hundreds of Design & Access Statements each year. The ones that fail to support an application typically make one or more of these mistakes:

• Describing rather than arguing. "The extension will be single storey and constructed in brick" is a description. "The single storey form and matching brickwork reflect the domestic scale and material palette of the street scene, consistent with policy DEN1" is an argument. Every sentence should advance the case for approval.
• Generic policy citations. Citing NPPF paragraphs without connecting them to the specific proposal is unconvincing. Officers want to see that you have read the relevant policies and understand how they apply to your site.
• Ignoring constraints. If the site is in a flood zone, conservation area, or near a listed building, the statement must address this directly. Failing to mention a significant constraint suggests the applicant has not considered it.
• Wrong NPPF paragraph numbers. The NPPF has been revised several times. Always use the December 2023 version. For example, the paragraph on well-designed places is now §135 — citing the old 2019 number (§130) will undermine confidence in the statement.
• No neighbour impact analysis. For residential extensions and new dwellings, officers want to see that daylight, outlook, and privacy impacts on neighbouring properties have been properly assessed — ideally on a per-property basis.

How Buildwise can help

Buildwise generates professional Design & Access Statements using AI, cited to your council's actual local plan policies and tailored to your site's specific constraints. Every statement is structured around the sections planning officers expect, with site-specific arguments for every policy.

Rather than starting from a blank page, architects use Buildwise to generate a complete, submission-ready first draft in minutes — then review and edit it before submission. The platform handles policy research, constraint analysis, and document structure automatically.

Plans start at £99/month, with a free Permitted Development check available to all users.

Generate your DAS in minutes

AI-written, policy-referenced Design & Access Statements — cited to your council's actual local plan policies, tailored to your site's specific constraints. Every statement is written to the standard planning officers expect.