HHSRS software: score hazards on site, inside the evidence record.

The Housing Health and Safety Rating System is how a hazard in a home is rated: the likelihood of harm over the next twelve months, the spread of possible harm outcomes, and a score from a published formula that decides whether it is a Category 1 hazard. HousingSurvey Pro puts that assessment in the field app, next to the readings and photos it rests on, and seals it with the survey.

To be exact about what that means: the app does the HHSRS arithmetic and records the assessor's judgements. It does not make those judgements, and it is not a local authority assessment.

What the HHSRS step records

• The hazard profile. Any of the 21 profiles of the amended system, searchable and grouped under the four headings, with quick-add buttons for damp and mould, excess cold, fire and falls on stairs. Score as many as you judge present and significantly worse than average: in practice a handful per home, not all 21.
• The likelihood. One point on the 16-point scale, from 1 in 1 to 1 in 5,600 over twelve months, for the occupier most vulnerable to that hazard.
• The spread of harm outcomes. Percentages across the four classes of harm (Extreme, Severe, Serious and Moderate), which must add up to 100. You can start from a preset spread and adjust it.
• The evidence behind it. The rooms where the hazard presents, linked to the assessment, so the score sits beside that room's readings and photos.
• The assessor's notes. The deficiencies observed and the basis of the judgement, typed or dictated. Where your organisation has connected an AI provider, AI Polish can tidy the wording; it never touches the score.

What the app works out

As the assessor enters the likelihood and the spread, the app shows the score live, using the published formula and the class weightings (10,000, 1,000, 300 and 10), with its band and category:

The scoring follows the HHSRS Operating Guidance as amended by the HHSRS (England) (Amendment) Regulations 2026, in force from 23 June 2026. It runs on the device, so it works with no signal, and an assessment that is not finished (no profile, no likelihood, or a spread that doesn't add up to 100) is shown as incomplete rather than given a score. For the reform and what it means for damp and mould, see HHSRS damp and mould hazard scoring, explained.

Which hazards, in which surveys

Any of the 21 profiles can be scored in the HHSRS step. Thirteen of them also have their own survey module, with the sections, readings and report template for that hazard. The HHSRS step is part of twelve of those surveys; asbestos is scored on its own register instead. "HHSRS step only" means the profile can be scored inside another hazard's survey but has no survey module of its own.

See the 13 hazard types and what each hazard's survey contains.

HHSRS and the Awaab's Law track are separate

A Category 1 score is not automatically an Awaab's Law emergency. Every hazard survey also has a hazard triage step, where the surveyor records their own judgement of whether the case is significant or an emergency against the GOV.UK guidance, and an emergency actions step, shown once a case is judged an emergency, for the 24-hour make-safe record. The statutory clock follows the case's severity (significant or emergency) and its nation, not the HHSRS score. See damp and mould case management for how the clock runs.

Where the assessment goes

• Sealed with the survey. When the survey is finalised, the HHSRS assessments are part of the locked, hash-chained record for the property. A correction creates a new version; the original is kept.
• In the portal and the report. The sealed record in the portal's Evidence screen shows each assessment's likelihood, harm spread, score, band, category and notes. The report lists each assessed hazard with its likelihood and its category (the on-screen report adds the score and band), followed by a statement of the method and its limits.
• In the evidence bundle. The bundle's record.json carries the assessments with the rest of the sealed record. The REST API and webhooks carry each finalised record's findings and readings to your housing system; the HHSRS scores themselves are in the report and the bundle.

Security

Records are stored in Google Cloud's London region, locked on completion with a server-set timestamp and covered by an append-only audit log. The platform is designed against Cyber Essentials and ISO/IEC 27001 controls; formal certification is on the roadmap and not yet held. See security.

What it does not do

It never sets the likelihood or the harm spread for you, and AI is never used to compute a score. It does not decide enforcement: that rests with the local housing authority under the Housing Act 2004. It is not assessor training. The scoring follows the amended system for England; outside England, check it against the rules that apply there.

Related

• HHSRS damp and mould hazard scoring, explained
• Awaab's Law Phase 2 hazards
• Damp and mould case management software
• Housing disrepair software

Frequently asked questions

This page is general information, not legal advice, and not a substitute for qualified HHSRS assessor training. Source: HHSRS Operating Guidance (Housing Act 2004), as amended by the HHSRS (England) (Amendment) Regulations 2026. Product details reviewed 17 October 2026.