Episode 197 - PAS 6463:2022 Design for the Mind. Neurodiversity & the Built Environment

This week we will be talking about PAS 6463:2022 Design for the Mind. Neurodiversity & the Built Environment. This episode content meets PC2 - Clients, Users & Delivery of Services & PC3 - Legal Framework & Processes of the Part 3 Criteria.

Resources from today's episode:

Website:

• https://www.bsigroup.com/en-GB/insights-and-media/insights/brochures/pas-6463-design-for-the-mind-neurodiversity-and-the-built-environment/
  
  

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Transcript

Episode 197:

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I am your host Maria Skoutari and this week we will be talking about PAS 6463:2022 Design for the Mind. Neurodiversity & the Built Environment. Todays’ episode meets PC2 & PC3 of the Part 3 Criteria.

And make sure to stay until the end for an example scenario.

This is a document by the British Standards Institution that provides guidance on the design of the built environment for a neurodiverse society, to make places more inclusive for everyone. The guidance sits right at the intersection of inclusive design, legal duties under the Equality Act, briefing, risk management and professional ethics.

So, when we say neurodiversity, what do we mean by it in PAS terms:

PAS 6463 has a very clear framing: neurodiversity is the variation in neurocognitive profiles across the whole population and the guidance in the PAS is about us all, not just one diagnosis or condition. It distinguishes between three broad groupings: 

• people who are neurotypical, 
• people who are neurodivergent, 
• and people whose profiles are neurodegenerative, for example through dementia or Parkinson’s, while stressing that many people don’t fit neatly into any category or have never been formally assessed.

The PAS focuses on the sensory and information processing difference, which is differences in how information from hearing, sight, touch, smell, taste and movement is perceived, processed and organised, including hypersensitivity, hyposensitivity and sensory‑seeking behaviours. PAS 6463 highlights that all senses work together, that the multisensory impact of environments is what really matters, and that a change intended to help one group can make things worse for another if it removes choice or control.

The key item to highlight is that PAS 6463 is a guidance document, not a code of practice, and British Standards Institution is explicit that it should not be quoted as a specification in the way a British Standard might be. It applies to buildings and external spaces for public and commercial use, as well as residential accommodation for independent or supported living, but it does not attempt to cover specialist Special Educational Needs and Disabilities schools, complex care environments or detailed sensory room design.

The guidance is intended to be used by designers, planners, specifiers, facilities managers and “decision‑makers”.PAS 6463 also sits alongside, rather than instead of, existing accessibility standards such as BS 8300‑1 and BS 8300‑2, and it cross‑refers to them for wider inclusive design principles and light reflectance value guidance.

Why this guidance matters for architects:

Environments designed without regard for neurodiversity are likely to contribute to poor mental health and impaired wellbeing for people with sensory processing differences, which where architects come in to provide better designed and considered environments. 

Some key factors highlighted in the guidance to be considered includes, intermittent or continuous sounds, especially unexpected ones, visual “noise” created by glare, shadows, colours, patterns, movement and clutter, spatial factors like crowding and confusing layouts and unwanted or extreme feedback from smell, touch or temperature.

To assist designers, the PAS identifies “good sensory inclusive environments” can attract and retain occupants and customers, reduce absence linked to mental ill‑health, improve wayfinding, enhance wellbeing and even improve focus, creativity and productivity.

Now, one of the most important sections within the guidance is the one looking at Briefing, the RIBA Plan of Work and stakeholder engagement:

Starting with the brief, this looks at “Developing the brief’’ and it states that developers, funders, commissioners and client bodies “should commit to good practice standards” and adopt inclusive design principles from concept stage, explicitly including design considerations for neurodiversity in strategy documents and development agreements.

The PAS then maps this to each RIBA Plan of Work stage, outlining that at:

• Stage 0: Document a commitment to accessible, sensory‑friendly inclusive environments and identify a management‑side “champion” for neurodiversity and inclusion. 
• Stage 1: Integrate accessibility and inclusive design principles into the brief, state the requirement to follow PAS 6463 where applicable, secure technical expertise, and establish user consultation groups that include people with lived experience of sensory differences. 
• Stages 2–4: Carry out design reviews against PAS 6463, develop access content for planning submissions and building control, and align maintenance and operation strategies with inclusive design and neurodiversity. 
• Stages 5–7: Check implementation during construction, inspect and audit sensory aspects at handover, and carry out post‑occupancy audits with ongoing feedback loops involving disability and neurodiversity groups. 

Alongside defining the brief and mapping it against the RIBA work stages, the next key step is stakeholder engagement. PAS 6463 says accessibility and inclusive design specialists should be appointed and that organisations should designate someone internally to champion neurodiversity and sensory‑friendly buildings. It also stresses that consultation methods themselves must be inclusive by providing preview information, suitable venues with step‑free access, good acoustics and assistive listening, options beyond face‑to‑face meetings, and reimbursement for volunteers’ time and expenses.

Now, moving from briefing into spatial strategy, the guide expands further into site and building layout through a sensory lens. It calls out population density, proximity to high‑traffic or noisy areas, legibility and coherence of routes, and connectivity to transport and parking as key considerations for people with sensory differences. Looking at the human use of space and how population density affects behaviour and social interaction, with a reminder that personal space needs can vary for cultural, ethnic and neurological reasons. PAS 6463 uses Edward T. Hall’s “intimate, personal, social and public” distances to explain why some individuals experience intense anxiety in crowded spaces and recommends designs that provide larger personal space allowances and readily available access and egress routes.

As such, the guidance suggests:

• Planning pathways that offer a choice of routes, such as both direct, logical lines and more flowing, curved routes that can feel more natural and less confrontational. 
• Providing green space, wider pavements and walkways, and spaces for respite or play, reducing exposure to traffic and allowing people to step out of flow. 
• Publicising predictable peaks in crowding and signposting quiet or restorative spaces so that people who are sensitive to crowding can plan their movements. 

Now the guidance doesn’t only focus on spatial design, it also looks at facades, linking architectural expression directly to sensory comfort. It notes that building envelopes influence heat and light exchange and that their design “should provide a positive impact” on people by aiding navigation and orientation and by avoiding features that cause sensory overload. Being wary of reflective materials is key, especially in large areas of reflective metals or glazing which should be avoided where they cause discomfort or disability glare, especially for people with heightened sensitivity to light. Where such materials are used, mitigation strategies can include sloped façades above head height, diffusing materials, low‑reflectance films or fritting, external louvres, and undertaking glare analysis, with a nod to local planning advice such as the City of London’s solar glare guidance. There is also a safety dimension whereby reflective panels or cladding at lower levels can reach high surface temperatures and present a burn risk, particularly for people with reduced sensation, slower reaction times or difficulties with grip and balance. The PAS recommends minimising hot cladding below head height in areas used by more vulnerable groups and considering the risk of contact in design decisions.

Wayfinding is also another critical part identified in the guidance. For people with sensory and information‑processing differences, previewing information can significantly reduce anxiety through effective way finding explaining what to expect and how to navigate. The guide identifies a number of ways this can be done, including:

• By providing virtual tours, images or video of key spaces on websites, so people can familiarise themselves before visiting. 
• Mapping areas of high sensory load, such as noise, movement, visual complexity, using sensory mapping, and sharing this information so visitors can choose preferred routes. 
• Avoiding positioning moving images or advertising screens directly in primary sightlines where they would be unavoidable and visually overwhelming. 

The guidance offers a set of recommended way finding symbols and emphasises the importance of clarity and consistency. The PAS links back to inclusive signage guidance, such as the Sign Design Guide, and notes that excessive visual complexity in signage systems can itself become a form of visual noise.

Now reverting back to internal configuration of spaces, PAS 6463 returns repeatedly to three big technical domains: MEP services, acoustics and lighting. In mechanical and electrical design, noise, odour, temperature and control strategy all have sensory consequences, the hum of fittings, fast‑boil kettles, fans and hand dryers can be extremely distracting or distressing for some people.

As such, the guidance makes acoustics and noise management recommendations through focusing on room acoustic values and emphasises low reverberation times, avoiding echoes, and using soft, absorptive materials, especially in large or hard‑surfaced spaces such as sports halls, swimming pools and atria. The guidance warns against introducing background music, white noise or masking systems without consulting an acoustic specialist, as these may improve speech privacy for some while significantly worsening overload for others.

As such, the guidance promotes checking product noise data and, where possible, choosing low‑noise devices or offering alternatives like paper towels instead of only high‑noise hand dryers. It highlights that many low‑level noises are continuous and inescapable and that sustained exposure can contribute to fatigue and anxiety for people unable to filter them out. Therefore it is crucial for noise to be mitigated appropriately.

Next, the guidance looks at Light, glare, contrast and visual stress:

The PAS advises against fluorescent lighting and harsh, direct sources, recommending low‑level, indirect lighting with warm correlated colour temperature as a baseline, particularly in quiet or restorative spaces. It encourages access to daylight and views outside while actively managing glare, reflections and rapid lighting variability.

There is an important link to visual stress and patterns. The guidance references work on how certain visual patterns and high‑contrast, high‑frequency designs can trigger discomfort or even neurological symptoms for some people. It suggests using principles like biophilic design and the golden ratio, as well as fractal patterns derived from nature, to reduce visual noise, and avoiding overly busy, high‑contrast graphic treatments in circulation spaces and on floors.

Light reflectance values and tonal contrast are treated as tools to support legibility and safety as such, the guidance recommends muted colours, low contrast and smooth transitions in quiet spaces, with stronger colours or contrasts used sparingly and deliberately to support wayfinding or to provide optional stimulation for those who seek it.

On surface finishes, the guidance links visual and tactile properties directly to sensory load. It  outlines some examples of matt or low‑sheen surfaces and discusses bevels, trims and tile configurations that avoid visually confusing or trypophobia‑triggering patterns. The advice is to avoid unnecessary graphics or patterning on floors, especially in environments where accurate interpretation of markings is critical, such as sports halls. Tactile experiences are also addressed in terms of comfort and safety. For example, high‑profile deterrent paving is recognised as both a visual and physical deterrent, and designers are reminded that some people will be more vulnerable to discomfort or pain from such textures. Temperature and touch preferences are also highlighted, particularly in spaces where skin is exposed, such as lidos or swimming facilities, where surface temperatures must be safe and not cause burns.

A major theme of PAS 6463 is providing quiet and restorative spaces across building types, not just in specialist environments: 

The guide offers a checklist for designing these spaces with flexibility and control, so they can serve people with both hypersensitivity and hyposensitivity.

Key themes include:

• Baseline design that is neutral and calming. Low reverberation, no intrusive manufactured sound, good acoustics, indirect warm lighting, muted colours and simple layouts that feel private, informal and cosy. 
• Optional additions for those who seek more input such as access to natural sounds, brighter or cooler lighting options under individual control, movement‑enabled furniture, and objects with natural fragrances that do not dominate the room. 
• Strong emphasis on personal control such as dimmers, colour‑tunable lights, pods or capsules for increased privacy, and access to calming or focusing items such as cushions, blankets or books. 

The PAS notes that some people benefit from pressure and texture in touch while others will find those same sensations overwhelming, which again leads back to the principle of choice and adjustability.

The next key area of focus of the guide related to management, facilities and day‑to‑day practice:

One of the strongest messages for practice is that “design and management measures are often inseparable.” Staff awareness, inclusive policies and sensory‑friendly communication are as important as physical design in supporting people with sensory differences.

Key management actions include:

• Providing staff training on how to support people with sensory and information‑processing differences, including recognising signs of overload and knowing what adjustments can be offered. 
• Designing communication in multiple formats, providing advance information on busy times, noisy activities and triggered effects, and offering welcome guides that explain on‑site features and options to avoid triggering areas. 
• Incorporating sensory considerations into procurement, cleaning and facilities management. From specifying quieter devices to ensuring food odours, clutter and overflowing bins in shared spaces are kept under control. 

And lastly the guidance assesses environment types, such as workplaces, sport, culture and livingand how the general principles land in practice:

In workplaces, the guidance advocates for multiple possible desk locations for an individual, clear‑desk policies to reduce clutter, and opportunities to tailor one’s immediate environment, for example, adding a plant or screening a visually busy zone.

In sport and leisure facilities, it recognises that large, hard‑surfaced and often glazed spaces can be acoustically and visually challenging, and calls for acoustic treatment, careful control of glare, and disciplined use of surface graphics and colour markings so that essential information remains legible. It also underlines the importance of managing smells from water treatment chemicals, and surface temperatures where users have exposed skin.

Healthcare, arts and culture, and living and sleeping accommodation each get commentary emphasising anxiety, waiting environments, lighting control, and the availability of quiet spaces and alternative information formats. The consistent thread is that everyday environments like gp surgeries, museums, hotels, student housing, can become significantly more accessible to neurodivergent people when both design and management adopt the PAS principles.

Not all interventions are fixed or architectural. The guidance lists a number of assistive aids and technologies that can help people self‑manage sensory load, including earplugs, noise‑cancelling headphones or ear defenders. Visual filters like screen overlays, sunglasses or peaked caps and comfort or stimulation items such as cushions, beanbags, fidget devices or seating that allows gentle rocking or tilting.

The message to designer and clients is twofold. First, spaces should accommodate and not stigmatise the use of such aids. For example, by allowing quiet head‑phone use, or by providing lockable storage near quiet rooms. Second, building‑level design and management should aim to reduce the baseline sensory burden so that individuals are not constantly required to compensate through personal equipment just to function. The guidance should not be seen as just a design checklist but as a lens on professional duty. It reframes “design for the mind” as a mainstream competence that intersects with briefing, consultation, legal compliance, building performance and post‑occupancy evaluation. 

It invites designers and clients to ask, at every stage, who might be excluded or exhausted by this environment and what could be done, in design and in management, to give them the same opportunity to work, live and socialise comfortably as everyone else?

Before I move on to an example scenario, let’s sum up what I discussed today:

• PAS 6463 defines neurodiversity as the variation in neurocognitive profiles across the whole population, not a short list of diagnoses. It emphasises that sensory and information‑processing differences are dynamic, affect many people with and without formal labels, and that the guidance is “about us all.’’
• The guidance explains how sounds, visual noise, spatial crowding and unwanted sensory feedback from smell, touch or temperature can cause overload, anxiety, shutdown and fatigue. It stresses that these impacts can often be reduced or avoided through thoughtful design and ongoing management, rather than being treated solely as individual problems.
• PAS 6463 maps activities to RIBA work stages, from embedding commitments and appointing an inclusive design specialist at Stage 0, to reviewing designs, setting management strategies and carrying out post‑occupancy audits at Stage 7. It highlights early and continuous stakeholder engagement, especially with people who have sensory differences, as critical to developing a genuinely inclusive brief and design.
• Across a number of topics (layouts, acoustics, lighting, finishes, furniture), the guiding principle is to give users flexibility, choice and control over their sensory environment. The PAS strongly promotes quiet and restorative spaces, good wayfinding and preview information as core features of mainstream buildings, not specialist add‑ons, to support wellbeing and equal participation.