Structural collapse

Structural collapse covers structural failure and collapse threats — displaced or falling building components, internally and externally. It is a Phase 2 Awaab’s Law hazard: capturable in full today, with its statutory clock not yet commenced.

What it is

The GOV.UK guidance draws a clear line here: a sudden, rapidly-worsening crack or a leaning wall is an emergency; a defective boundary wall or roof tiles at risk of falling, with no imminent danger, is significant. Large Panel System (LPS) construction is explicitly named as out of scope for the normal 15-day triage window — its inherent structural weaknesses need a lengthier investigation than this framework covers — and minor superficial render cracking with no collapse risk is out of scope entirely.

The Structural Collapse section reuses external observations, then adds its own record: ceiling, balcony, retaining/boundary wall, chimney and roof-element condition, an onset date and whether the issue is progressing, whether the building is of LPS construction, and a repeatable crack-observation log using BRE Digest 251 categorisation.

How to do it

1. Complete external observations as you would for any hazard type.
2. On the Structural Collapse card, record the condition of the ceiling, any balcony, retaining/boundary walls, chimneys and roof elements.
3. For each crack observed, add an entry recording its location, measured width and BRE Digest 251 category, using the repeatable crack log.
4. Record when the issue was first noticed and whether it appears to be progressing, and flag Large Panel System construction if it applies.
5. Complete Hazard Triage — cite whether the defect is worsening and how frequently the affected area is used.

How it integrates

Structural collapse has its own AI preset (housing-structural-collapse): image analysis restates only that a crack, sag, bulge or defect is visible — it never assigns a BRE Digest 251 damage category, which stays a competent assessment you record yourself against each crack entry. The executive-summary draft is grounded in the full assessment, including every logged crack observation. The finished record uses the “Structural Collapse Assessment Report” template.

Common problems

• The property is Large Panel System construction. Record it — but note GOV.UK places LPS structural investigation outside this framework’s normal 15-day scope; it needs its own lengthier process.
• A crack looks cosmetic, not structural. Minor superficial render cracking with no collapse risk is explicitly out of GOV.UK’s scope for this hazard.
• There’s no due date on this job. Expected while Phase 2 remains unconfirmed, except for an emergency-severity case.