Establish the environment being designed
Record the service type, user group and purpose of the outdoor space with the clinical and estates teams. Distinguish a general residential care garden from an adult acute mental health unit or a secure service. Do not transfer a specification between them merely because the previous installation used a similar fence.
NHS England’s HBN 03-01 publication page distinguishes its main adult acute guidance from the supplement for low and medium secure facilities. This is a useful example of why the document’s scope must be matched to the project.
Build a review matrix around contact points
| Element | Project question | Review responsibility |
|---|---|---|
| Infill | Is its geometry appropriate for the intended users? | Clinical risk and design teams |
| Post and panel connection | Are accessible interfaces consistent with the assessment? | Designer and relevant specialist |
| Bottom edge | How do levels, surfaces and maintenance affect the detail? | Landscape, estates and safety reviewers |
| Gate | Does operation fit supervision and approved access arrangements? | Clinical, access and gate specialists |
| Finish | Can the surface be cleaned and inspected as intended? | Estates and maintenance teams |
| Adjacent objects | Does the complete outdoor arrangement meet the brief? | Coordinated project review |
The matrix records responsibilities; it does not provide a clinical risk assessment. Avoid cataloguing ways to defeat a boundary or presenting an untested detail as preventing self-harm.

Compare two briefs without inventing dimensions
In an illustrative residential care garden, the team may prioritise independent movement, a recognisable entrance and supported maintenance access. In a different specialist unit, the team may require a more controlled access arrangement and additional review of accessible components.
The same nominal panel height cannot resolve those differences. The useful output is a documented performance brief and accepted interface details, with any dimensions supplied by the responsible design process. Where a dimension remains undecided, identify who will establish it and what evidence is required before the order can proceed.

Review a representative assembly
Agree what the sample must demonstrate before requesting it: a panel-to-post connection, gate hardware or another defined interface. Keep the sample identity and drawing revision with the reviewers’ comments. If a material, fixing or finish changes, return the affected detail to the appropriate reviewer rather than assuming visual similarity preserves the accepted clinical-environment brief.
Keep the sample reference, drawing revision and approval record together. If a supplier proposes a substitute fixing, latch or finish, return that change to the affected reviewers. A visually similar part may alter the assessed interface.
Carry the decision into maintenance
Include component references and the authorised replacement process in the handover package. For custom spare parts, retain the accepted geometry, material and finish so maintenance procurement can reproduce the reviewed interface. The site team should control repair access and reopening decisions; supply documentation should support those decisions without making an unsupported claim that a product suits every care facility.
For B2B procurement, the supplier’s role is to provide accurate construction information and the agreed materials within the approved brief. Do not replace the project’s clinical and specialist design decisions with broad claims such as “safe for every care facility”.