HSWA 1974, COSHH and ACOP L8
What does a legionella risk assessment cost?
A legionella risk assessment for a single rented property or small business premises typically costs £60–£150; larger or more complex premises run £200–£600+. The duty to assess comes from the Health and Safety at Work etc. Act 1974 and COSHH, applied through the HSE's Approved Code of Practice L8, and it covers landlords of domestic rentals as well as employers. Tell us about your premises and relevant local assessors will quote their exact price.
How it works
- Tell us about the premises: type, water system, first assessment or review. Two minutes, no account.
- We pass your details to relevant legionella assessors covering your postcode, and to no one else.
- They contact you directly with their actual price for your premises. Compare, choose, or walk away.
Legionella Assessment Cost is a free introduction service operated by Ellul Solutions Ltd; we pass your details to relevant local legionella risk assessors who quote you directly. We may receive a fee from providers; you pay nothing and are under no obligation. We are not a risk assessment firm, we are not affiliated with the Health and Safety Executive, and nothing here is legal advice; cost figures are typical 2026 quote ranges that vary by region and system complexity.
Typical legionella risk assessment costs, 2026
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What a legionella risk assessment typically costs by premises type. These are typical quote ranges observed across the UK market in 2026, not fixed prices; system complexity and site count move the number.
Ranges reflect typical quotes for legionella risk assessment work observed across the UK market in 2026; they vary by region, water system complexity and portfolio size. The legal duty derives from the Health and Safety at Work etc. Act 1974 and COSHH, applied through HSE ACOP L8; figures for sampling are excluded because testing is priced per sample and is not part of the core assessment duty. Get exact quotes for your premises via the form above.
| Premises | Typical cost (2026 quotes) | Notes |
|---|---|---|
| Single rented house or flat (landlord duty) | £60–£150 | Simple hot and cold systems assess quickly; portfolio rates are lower per property |
| Office, shop or small business premises | £60–£150 | Assumes straightforward mains-fed or single-cylinder systems |
| Hotel, gym, care home, larger or multi-system premises | £200–£600+ | Stored water, multiple outlets, spa pools and complex pipework add survey time |
| Review of an existing assessment | Often below first-assessment price | Priced on what has changed since the last assessment; no fixed legal interval applies |
| Water sampling / laboratory testing | Priced per sample | A control measure where risk indicates, not a substitute for the risk assessment |
- A legionella risk assessment for a single rented property or small business typically costs £60–£150 (typical 2026 quotes; varies by region and system complexity).
- Larger or more complex premises, hotels, care homes and blocks, typically cost £200–£600+ for a legionella risk assessment in 2026 quotes.
- HSE guidance confirms landlords of residential accommodation have a duty to assess the risk from legionella; there is no fixed statutory review interval, reassessment every 2 years is common practice.
Cite this page
“Typical legionella risk assessment costs, 2026”, Legionella Assessment Cost, https://legionellaassessmentcost.co.uk/ (updated 2026-08-14). Ranges reflect typical quotes for legionella risk assessment work observed across the UK market in 2026; they vary by region, water system complexity and portfolio size. The legal duty derives from the Health and Safety at Work etc. Act 1974 and COSHH, applied through HSE ACOP L8; figures for sampling are excluded because testing is priced per sample and is not part of the core assessment duty. Get exact quotes for your premises via the form above.
The detail
Sourced, dated, kept current.
Landlord legionella risk assessment: legal duties and 2026 cost
Landlords must assess legionella risk in domestic rentals; HSE guidance says so explicitly. Typical cost £60–£150, no certificate exists, and DIY is lawful if competent.
ACOP L8 explained: the legionella code of practice in plain terms
ACOP L8 is the HSE's approved code of practice on legionella. Follow it and you comply with the law; depart from it and you must prove equivalence. What it requires.
Legionella testing vs risk assessment: which you actually need
The risk assessment is the legal duty; water testing is a control measure used where risk indicates. HSE says testing is not usually needed for domestic systems.
How often do you need a legionella risk assessment?
There is no fixed legal interval for legionella risk assessments. The duty is to review when things change; every 2 years remains common commercial practice.
Straight answers
How much does a legionella risk assessment cost?
Typical 2026 quotes: £60–£150 for a single rented property or small business premises, £200–£600+ for larger or more complex premises such as hotels, care homes and blocks of flats. Portfolio landlords typically pay less per property. Ranges vary by region and system complexity.
Is a legionella risk assessment a legal requirement?
Yes, where the duty applies. Employers, those in control of premises and landlords of residential accommodation must assess and control legionella risk under the Health and Safety at Work etc. Act 1974 and COSHH, applied through HSE's ACOP L8. What is not required by law is a certificate or, for most simple systems, routine testing.
Do landlords need a legionella risk assessment for a normal rented house?
Yes. HSE guidance states landlords of residential accommodation have a duty to assess the risk from exposure to legionella. For a typical domestic property the assessment is simple, and a competent landlord may carry it out themselves; many pay £60–£150 (typical 2026 quotes) for a professional record.
How often does a legionella risk assessment need to be done?
There is no fixed statutory interval. ACOP L8 requires review when there is reason to think the assessment is no longer valid, after changes to the system, its use, or evidence of failing control. Every 2 years is common commercial practice and a sensible habit, but it is not a legal deadline.
Do I need legionella testing as well as a risk assessment?
Usually not. The risk assessment is the legal duty; sampling is a monitoring measure used where the written scheme of control calls for it, routine for cooling towers, generally unnecessary for domestic hot and cold water systems according to HSE. Buy the assessment first and let it decide.
Is this quote service really free?
Yes, free to you, with no obligation to accept any quote. We pass your details only to relevant local legionella assessors, who quote you directly; we may receive a fee from those providers, which is how the service is funded.