https://www.gov.uk/government/publications/housing-health-and-safety-rating-system-hhsrs-operating-guidance-housing-inspections-and-assessment-of-hazards
Housing health and safety rating system (HHSRS) operating guidance: housing inspections and...
Guidance about inspections and assessment of hazards in housing given under section 9 of the Housing Act 2004.
housing health and safetyrating systemhhsrsoperatingguidance