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An Introduction to the Housing Health and Safety Rating System - HHSRS

Download an Overview of HHSRS [116kb]
Download a Landlord's Guide to HHSRS [539kb]
View the HHSRS Worked Examples on our Downloads Page

View information on the The 29 Hazards

Why HHSRS?

Concerns about the current fitness standard being inadequate to properly reflect defects in dwellings, particularly in the limited type of “problems" it covers, it being a simple pass/fail method of assessment and the perceived degree of subjectivity involved

New emerging agendas in housing & health, for example: home accidents, increased winter deaths & hospital bed-blocking

At it’s core, the HHSRS reflects a change in approach from looking at total property condition to one where the focus is on identifying and assessing the seriousness of hazards arising from property defects –either through poor design, something missing or lack of repair etc.

The aim of the HHSRS is that all properties, including gardens, outbuildings etc will provide safe accommodation for the occupiers and visitors.

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HHSRS Assessments

When carrying out assessments, each is determined having reference to the “vulnerable” group i.e. those persons who, by age, are most susceptible to suffering harm from the hazard in question.

Flow chart showing the HSSRS assessment process

What are the defects?
down arrow
What hazards arise from these defects?
down arrow
How likely is the occurrence of the hazard? (Likelihood)
down arrow
What harm could occur as a result of the hazard? (Outcome)
down arrow
Calculate hazard score

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The assessment process

For each hazard:

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Are there any defects present which give rise to a given hazard?

What the assessor has to judge is whether, in the property in question, the occurrence of the hazard is more or less likely and whether it is likely to give rise to more, or less, serious harm than the average expected for the property age & type

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Deficiencies, defects and faults

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The ideal standard

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Vulnerable groups

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What is likelihood?

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Health Outcomes and Classes of Harm

Guidance is given on the normal or expected severity of outcomes following exposure to each hazard

Class of Harm
Weighting
In the hazard score calculation, each of the % figures in the 4 classes is multiplied by a weighting
1
10,000
2
1,000
This is intended to reflect the relative severity of that particular class of harm against the others
3
300
4
10

table above: class of harm outcomes

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Hazard score

Likelihood
Class of harm outcome (enter as a % number only)
Class l
A
Weight
B
Class ll
C
Weight
D
Class lll
E
Weight
F
Class lV
G
Weight
H
National average
256
1.6
10,000
6.6
1,000
21.6
300
70.3
10
Insert actual
1
2.2
10,000
4.6
1,000
21.5
300
71.7
10

table above: class of harm outcomes

Sum of outcomes (i) =
(axb) + (cxd) +
(exf) + (gxh)
Hazard score =
(i) / likelihood
29783
116
33767
33767

table above: calculating the hazard score

After deriving the Hazard score, its place in bands ranging from A to J is determined

Bands A to C - Category 1 Hazard – Mandatory Action
Bands D to J - Category 2 Hazard – Discretionary Action

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Please see relevant downloads regarding HHSRS on the downloads page.

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