Water systems · Duty-based
Legionella Risk Assessments for shared water systems
An assessment of your HMO’s shared plumbing — communal tanks, multiple bathrooms, low-use outlets — where Legionella risk is higher than in a single-occupancy let.
From £225 – £275 · Digital report usually within 24 hours
- Health and Safety at Work Act 1974 & ACOP L8 / HSG274
- No fixed statutory fine, but landlords can face liability and HSE enforcement if a tenant is exposed and no assessment can be shown.
What it is
Legionella Risk Assessment, explained
A Legionella risk assessment identifies where bacteria could grow in the water system — tanks, pipework, showers, any bathroom or outlet not used regularly. HMOs often have more bathrooms and more irregular usage patterns than a single let, which is exactly the profile that needs closer attention.
The law: Landlords have a legal duty to assess and manage Legionella risk. HMOs with shared water systems, multiple bathrooms, or infrequently used outlets (a room let short-term, an unused shower) carry more risk than a single let, so it’s worth reviewing more regularly.
What’s included
Every visit includes
- Full water system review across every bathroom and kitchen
- Identification of any dead legs or low-use outlets between room turnovers
- Written risk assessment with practical control measures
- Guidance for managing risk between tenant changeovers
- Digital report same day
Pricing
Legionella Risk Assessment prices
| Property | Price |
|---|---|
| HMO, shared water system | £225 – £275 |
| HMO, multiple bathrooms/kitchens | £275 – £340 |
| Single flat or house | £120 – £160 |
HMOs are priced higher than single lets because of the extra outlets and bathrooms to check — most are still a single, straightforward visit.
FAQ
Common questions
Why does an HMO need this more than a single let?
More bathrooms, more outlets, and more irregular usage between tenant changeovers all raise the risk profile compared with one household using the water system daily.
How often should it be reviewed?
Every 2 years is typical guidance, or sooner if the water system changes or a room sits empty for an extended period.
What if risk is found?
Usually straightforward control measures — temperature checks, flushing low-use outlets between tenants — not building work.
Is a certificate legally required?
No fixed certificate requirement, but you must be able to show you’ve assessed and are managing the risk.
Also required for most HMOs
Request a quote
Tell us about the property
A few details and we’ll come back with a fixed quote and the earliest slot, usually the same day.