Clinical building forensics
Building-Related Illness
Where occupant symptoms cross from discomfort into clinically diagnosable disease, our investigations identify the building cause and the remediation that ends exposure.
Definition
Building-related illness is a diagnosis — not a complaint cluster
Building-related illness (BRI) covers diseases with an identifiable causative agent originating in the building fabric, services or operations. Legionnaires' disease from a poorly maintained cooling tower or shower head; hypersensitivity pneumonitis from contaminated humidifiers; occupational asthma from biological aerosols in damp ceiling voids; carbon-monoxide poisoning from defective gas plant.
BRI sits at the serious end of the workplace indoor-environment spectrum. Unlike Sick Building Syndrome, where the diagnosis is presumptive and the management response is largely engineering-led, BRI cases trigger statutory notification obligations (RIDDOR 2013), insurer involvement, and — increasingly — civil claims.
Our investigation methodology integrates the standard SBS protocol (occupant survey, multi-parameter IAQ monitoring, ventilation audit) with targeted microbial sampling, water-systems forensics and combustion-plant assessment where the clinical picture warrants it.
Comparison
SBS vs Building-Related Illness
| Characteristic | Sick Building Syndrome | Building-Related Illness |
|---|---|---|
| Diagnosis | Symptom cluster, no specific agent | Clinically diagnosable disease |
| Causative agent | Not identified | Specific (e.g. Legionella, mould, CO) |
| Symptoms on leaving building | Improve within hours | Persist; require medical treatment |
| Statutory reporting | Not notifiable | Often notifiable (RIDDOR 2013) |
| Primary remediation | Engineering & operational | Source elimination + medical follow-up |
| Insurer involvement | Rare | Common |
Common categories
The four main BRI families we investigate
Infections. Legionnaires' disease and Pontiac fever from contaminated water systems, cooling towers and spa pools. Tuberculosis and other airborne transmission in under-ventilated settings (HSG274, ACOP L8).
Hypersensitivity reactions. Extrinsic allergic alveolitis (humidifier fever, farmer's lung) from biological aerosols; occupational asthma sensitisation from isocyanates, flour dust, or microbial contamination of HVAC.
Toxic exposures. Carbon monoxide from flueing defects; formaldehyde off-gassing from new MDF and laminates; asbestos fibre release from disturbed materials; elevated VOC mixtures post-refurbishment.
Irritant reactions. Acute irritant responses to specific contaminants — chlorine, ammonia, refrigerant leakage — typically with rapid onset and clear temporal link to the source event.
FAQ
Building-related illness — common questions
Suspect a building-related illness?
Investigate quickly. Call 01322 555566 or email info@sickbuildingsyndrome.uk for confidential triage.
Speak to a consultant