UK Part M Accessibility Review — part m building regulations revit
UK Part M Accessibility Review runs a Revit-side accessibility check against Approved Document M for UK Building Regs sign-off, covering M4(1), M4(2), M4(3) dwellings in Volume 1 and non-dwellings in Volume 2. It outputs a citable Building Control report and is available now as a Labs engagement under MSA + Appendix.
- Run a full Part M accessibility review on the working Revit model with every flag cited back to the specific Approved Document M clause.
- Set Volume 1 dwelling categories (M4(1) / M4(2) / M4(3)) and Volume 2 non-dwelling scope per project with your accessibility lead.
- Export an audit trail and narrative formatted for Building Control submission alongside the architectural set.
From manual Part M sweeps to in-Revit accessibility flags from week 1.
Workflow today
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01
Designer drafts the model — Week 1–4
Architects build the Revit model to internal standards while Part M expertise sits with a senior architect or external accessibility consultant. Door widths, level approaches, and stair geometry often follow office rules-of-thumb rather than explicit Approved Document M clauses. Early layout choices for sanitary facilities and parking are rarely checked against M4(1), M4(2), or M4(3) at this stage.
Week 1–4 -
02
Manual Part M sweep — Week 4–6
A senior architect or accessibility consultant prints or exports the architectural set and walks it against an Approved Document M checklist. They cross-reference plans, sections, and elevations to confirm approach routes, thresholds, corridor widths, and sanitary layouts. Comments arrive as marked-up PDFs or emails, with clause references that designers must interpret back into the Revit model.
Week 4–6 -
03
Issues mediated — Week 6–7
Designers work through the comments, often reverse-engineering which ADM clause applies and which elements in Revit must change. Stair riser and going geometry, ramp gradients, and WC layouts can require significant geometry rework when caught late. Coordination with other disciplines is manual, and there is no guarantee that every Part M requirement has been checked on every revision.
Week 6–7 -
04
Resubmit to Building Control — Week 7–10
The team resubmits drawings and an updated checklist to Building Control. Reviewers may still find missed items such as door clear widths, accessible parking bay dimensions, or lift access to upper floors. Two or more feedback cycles are typical, stretching the Building Regs check into several weeks and tying up the same senior staff who also own UK Part B fire safety review and other compliance work.
Week 7–10
Workflow with VitruAI
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01
Run the agent against the live model
From Day 1, the BIM Manager or project lead runs the Code Compliance Agent against the working Revit file with the Part M library active. The same engine that checks Dubai villas is configured to Approved Document M via a UK-specific rule set calibrated per deployment. Scope is set per project so the agent knows whether to enforce M4(1) only or also M4(2) and M4(3).
Day 1 · single-digit minutes per typical model -
02
Review accessibility flags directly in Revit
Issues appear inside Revit as element-level flags with the ADM clause, measured value, and required threshold. Door, stair, ramp, corridor, lift, and sanitary-facility issues are pinned to the relevant elements so designers see exactly what must change. The Accessibility Agent view groups findings by Volume 1 dwellings versus Volume 2 non-dwellings, and by severity for triage.
Day 1–3 -
03
Senior architect or accessibility consultant signs off
The senior reviewer works through the flagged items, agrees or overrides specific checks, and re-runs the agent to confirm fixes. A citable Part M report is generated with a model snapshot, rule outcomes, and commentary suitable for Building Control. This mirrors the narrative style already used for ADA accessibility audit workflows, but with UK Building Regs terminology and ADM clause numbering.
Day 3–5 -
04
Submit to Building Control with a Part M report
The team submits the architectural set with the exported Part M report as part of the Building Regs pack. Building Control reviewers see each clause reference, the checked geometry, and any justified deviations. The same rule library is maintained alongside the UK Approved Documents index, so future resubmissions reuse the calibrated configuration rather than starting again from a blank checklist.
Week 1
Using part m building regulations revit checks inside live projects
This workflow treats Part M as a repeatable, in-model Building Regs check rather than a one-off checklist at the end of Stage 3. The same rule engine behind the Code Compliance Agent and Accessibility Agent reads the Revit model, applies the Approved Document M library, and outputs a Building Control-ready report.
UK Part M accessibility and Revit — common questions
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What is Part M of the Building Regulations?
Part M of the Building Regulations 2010 in England covers access to and use of buildings, including approach routes, entrances, internal circulation, and sanitary facilities. Approved Document M provides the practical guidance, split into Volume 1 for dwellings and Volume 2 for buildings other than dwellings. The Revit workflow here encodes those clauses so each flagged element cites the relevant paragraph in the correct volume.
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Does my building need to comply with Part M?
Most new buildings and material alterations in England must comply with Part M, with the applicable volume and dwelling category depending on use and planning conditions. For example, a standard block of flats will at least need to meet M4(1), and local planning authorities may require a proportion of M4(2) or M4(3) units. The agent configuration is set per project so only the relevant categories are enforced in the Revit checks.
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What is the difference between M4(1), M4(2), and M4(3)?
M4(1) covers visitable dwellings, which are the default standard for most new homes unless higher categories are required. M4(2) sets requirements for accessible and adaptable dwellings, while M4(3) covers wheelchair user dwellings with stricter space and layout criteria. In the Revit-based Part M workflow, each dwelling type is tagged so the rule set can apply the correct thresholds for door widths, turning circles, sanitary layouts, and parking spaces.
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Does the agent cover Volume 1 dwellings and Volume 2 non-dwellings?
Yes, the Part M rule library includes both Volume 1 dwellings and Volume 2 buildings other than dwellings, with coverage calibrated per deployment. During the Labs engagement, your accessibility lead agrees which categories and building types to enforce so the checks match your typical housing, education, healthcare, or commercial projects. Mixed-use schemes can run both volumes in a single Revit model by scoping rules to specific levels, zones, or Revit worksets.
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Is Part M a legal requirement?
Part M itself is a legal requirement under the Building Regulations, while Approved Document M is the government-issued guidance on how to meet that duty. Building Control sign-off depends on demonstrating that your design satisfies the functional requirements, often by referencing ADM diagrams and dimensions. The generated report is designed to sit alongside your drawings as evidence, similar in structure to reports used for UK Part B fire safety review and other Building Regs checks.
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When will this Part M Revit workflow be productised?
UK Part M Accessibility Review sits on the roadmap and is available now as a Labs engagement under MSA + Appendix. The underlying engine is already in use for other rule libraries, including Dubai villas and ADA accessibility audit workflows. Ship-by for a fully productised UK Part M release depends on feedback from the next UK design partner cohort, which the waitlist helps to prioritise.