Water hygiene · ACoP L8 · HSG274 · Nationwide matching
Need a legionella risk assessment quote for a rental, HMO or workplace? Under the Health and Safety at Work etc. Act 1974 and COSHH, with practical expectations in HSE ACoP L8 and HSG274, landlords and dutyholders must assess and control legionella risk so far as reasonably practicable. Tell us your postcode and premises type — Safety Certificates UK is a matching network (we do not assess in-house) and we introduce vetted independent assessors across England, Scotland and Wales. Typical bands: domestic £90–£180, HMO £150–£350, commercial from £250. Start your quote now, or use the form opposite.
After you submit, we match an independent assessor covering your postcode, who confirms the fee and visit date before anything is booked. What happens next
We match you with a vetted assessor, who confirms your quote after scoping the premises.
Quick answer
Yes — if you let property or control premises with a water system. HSE applies section 3 of the Health and Safety at Work etc. Act 1974 and the COSHH Regulations 2002 to legionella, and its Approved Code of Practice L8 sets the approach: identify and assess the risk, then control it. That covers private landlords (even letting a single room), HMO operators, managing agents, employers, hotels, care homes and dental practices. There is no statutory “legionella certificate” — the assessment and the controls are what count.
| Your premises | What you need | Typical fee |
|---|---|---|
| Single house or flat let (combi boiler, no tanks) | Short, proportionate assessment and simple controls | £90–£180 |
| HMO, student let, stored hot water or loft tank | Full assessment of tanks, cylinder, showers and little-used outlets | £150–£350 |
| Office, hotel, care home, dental or leisure site | Assessment against ACoP L8 / HSG274 and a written scheme where needed | from £250 |
| Legionella + fire risk assessment together | One coordinated visit, one enquiry | Both bands quoted together |
Why it matters
Legionella bacteria occur naturally in freshwater. In purpose-built water systems — hot and cold domestic services, cooling towers, spa pools, dental unit waterlines and other engineered systems — conditions can allow bacteria to multiply. When aerosols are inhaled, people can develop Legionnaires’ disease, a potentially fatal form of pneumonia, or milder Pontiac fever. Vulnerable groups include older people, smokers, and anyone with a weakened immune system or underlying respiratory or kidney disease.
Employers and persons in control of premises must ensure, so far as is reasonably practicable, the health and safety of employees and others. Biological agents such as legionella sit under COSHH. Practical expectations for water systems are set out in HSE ACoP L8 and HSG274.
ACoP L8 is not itself primary legislation, but it has special legal status. If you are prosecuted for a breach related to matters covered by the Code, and it is proved you did not follow the relevant provisions, you will need to show that you complied with the law in some other way. Following L8 and HSG274 is the clearest route for most dutyholders.
A sensible control strategy begins with understanding your water systems and assessing the risk. A competent legionella risk assessment is the foundation document for landlords, employers and managing agents — usable findings, not a vague pass/fail sticker filed and forgotten.
Below: who needs an assessment, what a good assessment covers, how review cycles work, how our matching network operates, and how legionella work sits alongside fire risk assessments, health and safety audits and EICR and PAT testing. For practical articles see the Advice Hub; for local coverage see locations; quotes also at /quote/.
Dutyholders
HSE guidance is clear that the duty to manage legionella risk rests with the person in control of the premises or systems — often described as the dutyholder. In practice that may be an employer, a landlord, a managing agent acting for a freeholder, a school governing body, an NHS trust estates team, or a facilities management contractor with contractual control. Where more than one organisation shares control, responsibilities should be agreed in writing so that assessment, monitoring and remedial actions do not fall between stools.
Private landlords and HMO operators are frequently asked for legionella paperwork by local authorities, insurers and mortgage lenders even where the property is a simple domestic hot and cold water system. The risk profile of a single-family house with a modern combi boiler and regularly used outlets is often lower than that of a large commercial building with stored water — but “lower risk” is not the same as “no duty”. A proportionate assessment still identifies who is responsible, what systems exist, and what simple controls keep risk under control.
Commercial landlords, freeholders and property managers with common parts or shared water services need clear documentation. Multi-site FM portfolios often prefer one coordination point rather than dozens of local supplier relationships — standardised reporting expectations reduce the pain of comparing documents from different regions.
Schools, universities, nurseries and campus estates teams manage varied buildings, sports facilities and holiday shutdowns that create stagnation risks. Term-time patterns and mothballed wings make review triggers especially important — bring assessments forward when use changes.
Dental practices and wider healthcare premises with clinical water use often face regulator expectations (for example CQC inspection themes) that look for evidence of water safety planning, not merely a certificate filed and forgotten. Our network matches assessors who understand both the L8 framework and occupied clinical settings.
Hotels, gyms, leisure centres, offices and warehouses typically face more complex systems. Cooling towers and evaporative condensers attract specific notification and control expectations. Showers, spa features and intermittently used guest bathrooms elevate aerosol exposure potential.
Sites with cooling towers, spa pools or other higher-risk water features need assessors who can confirm whether HSG274 Part 1 or Part 3 systems are present — not only Part 2 hot and cold domestic services. The assessor must still walk the whole picture before narrowing scope.
Landlord duty
If you let residential property, HSE is clear that you have a legal duty to assess the risk from exposure to Legionella and to control it. The duty comes from the Health and Safety at Work etc. Act 1974 and the COSHH Regulations 2002, and HSE's guidance on landlords' responsibilities and ACoP L8 explain how to meet it. It applies to single lets and HMOs alike.
For most domestic lets the risk is low and the controls are simple: keep hot water hot and cold water cold, flush little-used outlets, remove or shorten redundant pipework, and keep tanks covered and clean. Higher-risk features — stored hot water, cold water tanks, long vacancies between tenancies, or occupants who are older or in poor health — need closer attention. HSE does not require a legionella “certificate” or routine water testing for a domestic let; it expects a recorded assessment and proportionate controls, with tenants told how to report problems.
HSE says a landlord can carry out the legionella assessment themselves if they are competent to do so. Many landlords — particularly those with HMOs, several properties, or systems with tanks and cylinders — prefer an independent assessor so the written record stands up to a council, agent or insurer. Either way the duty stays with you as the landlord. Our guide to whether a landlord can do their own legionella risk assessment covers the trade-off, and is it a legal requirement for landlords? sets out the law in more detail.
Price bands
Typical fees through our matching network, confirmed by the matched assessor once they know the premises:
What moves the price: the number of outlets and bathrooms, stored cold water tanks, hot water cylinders or calorifiers, showers and spa features, number of buildings, how vulnerable the occupants are, and whether you need a written scheme of control. Sampling is not usually needed for domestic systems and is quoted separately if the assessment recommends it. We show price bands up front and we do not sell remedial work.
Landlords of HMOs, managing agents and businesses usually need both a legionella risk assessment and a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005. Ask for both on one enquiry and we coordinate one visit where possible.
Commercial property
For offices, shops, hotels, care homes, surgeries, gyms and multi-let buildings, the employer or person in control must assess and control legionella under COSHH and the Health and Safety at Work etc. Act 1974, following ACoP L8 and HSG274. Commercial assessments typically start from £250 through our network; the matched assessor confirms the fee once they know the site.
| Commercial factor | Why it affects the scope |
|---|---|
| Calorifiers, cylinders and cold water tanks | Stored water must be checked for temperature, condition and turnover (HSG274 Part 2) |
| Number of outlets, showers and buildings | More sentinel and little-used outlets to survey and map |
| Cooling towers or evaporative condensers | Assessed under HSG274 Part 1 and must be notified to the local authority |
| Spa pools, hot tubs, humidifiers | Other risk systems under HSG274 Part 3 |
| Vulnerable occupants (care, healthcare, dental) | Fuller assessment and a written scheme of control are more likely |
In a multi-let building, the landlord usually controls shared plant and tenants control the systems inside their units, so each needs an assessment for the part they control. Hiring an assessor does not transfer the duty.
Framework
ACoP L8 sets out the principles of risk assessment, management responsibility, competence, and the need for a written scheme of control where the assessment shows it is necessary. HSG274 expands the technical detail across three parts: Part 1 covers evaporative cooling systems; Part 2 covers hot and cold water systems; Part 3 covers other risk systems. Most landlord and ordinary commercial enquiries centre on Part 2, but the assessor must still confirm whether other systems are present.
A suitable and sufficient assessment typically identifies and evaluates: the presence of water systems capable of creating a risk; conditions that encourage growth (temperature, stagnation, nutrients, scale and sediment); the potential for aerosol generation; who might be exposed; and whether existing controls are adequate.
Where the assessment identifies a significant risk, L8 expects a written scheme of control. That scheme is not a marketing brochure; it is the living set of precautions — temperature targets, flushing regimes, cleaning and disinfection schedules, sampling (where justified), roles and responsibilities, and what to do if monitoring results drift. Many smaller domestic systems can be managed with simple, documented controls after a concise assessment. Larger or higher-risk systems need more formal schemes and competent contractors for ongoing work. Importantly, Safety Certificates UK’s matched assessors focus on assessment and advice; we do not sell plumbing repairs as an upsell from the assessment visit. Independence helps dutyholders trust the findings.
How it works
After you submit an enquiry, our coordination team confirms premises type, approximate system complexity, access arrangements and any existing reports. We then match a vetted assessor with suitable competence for that risk profile — keeping the customer journey simple: one form, clear communication, multi-service options where useful.
You tell us premises type, postcode, timeline and any existing paperwork. We confirm complexity signals (stored water, cooling, multiple buildings, vulnerable occupants) before matching.
Assessors on the network are screened for relevant competence and insurance. You remain the dutyholder; the matched assessor produces the professional assessment; we help you find capacity quickly across the UK.
On the day, the assessor typically walks the building with a site contact, inspects plant rooms, tanks, calorifiers, point-of-use outlets and specialist equipment, takes representative temperatures, notes construction and condition issues, and discusses occupancy patterns (holiday lets, term-time schools, weekend-only wings).
You receive a structured report with risk commentary and an action list — not a vague sticker. Where urgent issues appear (for example stored water consistently in the growth range with aerosol risk to vulnerable people), the report should make priorities unmistakable. Photographs and schematics support the written findings.
Asset identification and schematic capture
Against growth-favouring ranges
Blind ends and infrequently used taps/showers
Cold storage, hot storage, mixers and showers
Clear timescales and scheme needs
Who has day-to-day control and how little-used areas are managed
Review cycles
Dutyholders often ask “how often must we renew the legionella risk assessment?” The law does not prescribe an annual or two-yearly renewal. ACoP L8 says to review the assessment regularly and specifically whenever there is reason to suspect it is no longer valid — for example changes to the water system or its use, changes to the use of the building, new information about risks or controls, checks showing controls are no longer effective, changes to key personnel, or a case of Legionnaires’ disease associated with the system. Many organisations also set a planned review date that suits the risk, but the legal test is validity, not a date stamped on a certificate.
If monitoring shows persistent temperature failures, or if a wing of the building has been mothballed and reopened, bring the review forward. Keep records. Enforcement officers, insurers and corporate auditors look for evidence that assessment, monitoring and remedial actions form a joined-up system. Scattered emails without a clear written scheme create avoidable weakness.
Network model
Safety Certificates UK is a coordination and matching service. Through PASECOM / Safety Certificates we introduce your enquiry to vetted assessors; we do not employ in-house assessors who carry out the site work under our own trading name as a direct consultancy. That distinction matters.
Where you also need a fire risk assessment, an EICR, or a broader health and safety audit, ask for a bundle so visits can be sequenced efficiently.
Why choose us
Matched assessors focus on risk truth — not selling pipework upgrades from the same visit.
Ask to combine Legionella with fire, H&S audit or electrical inspections where scheduling allows.
Clear findings and actions designed for dutyholders, insurers and enforcing conversations.
FAQ
Straight answers for landlords, employers and facilities teams considering a legionella risk assessment.
Yes, if you are a landlord, employer or person in control of premises with a water system people could be exposed to. HSE applies the Health and Safety at Work etc. Act 1974 and the COSHH Regulations 2002 to legionella, and ACoP L8 sets out how to comply: identify and assess the risk, then control it. For a simple domestic let the assessment can be short and proportionate.
Through our matching network, typical bands are £90–£180 for a domestic property, £150–£350 for an HMO or more complex system, and from £250 for commercial, care or dental premises. The matched assessor confirms the price once they know the premises type, size and what water plant is installed.
Use the quote form: give your postcode, premises type, number of bedrooms, flats or floors, and whether there is a cold water tank, hot water cylinder or calorifier. We pass it to an independent assessor covering your area, who confirms the fee and visit date before anything is booked.
Commercial, care and dental premises typically start from £250 through our network. The fee rises with the number of buildings and outlets, stored hot and cold water plant, showers or spa features, cooling towers or evaporative condensers (HSG274 Part 1), how vulnerable the occupants are, and whether a written scheme of control is needed.
The employer or person in control of the premises. In multi-let buildings the landlord usually controls shared plant such as tanks and calorifiers, while tenants control the water systems inside their own units; the lease should make this clear. Each dutyholder needs an assessment covering the part of the system they control, and they should share findings.
A site visit to identify the water systems and assets, temperature checks at representative outlets and plant, a review of storage tanks, cylinders, little-used outlets and dead legs, an assessment of who could be exposed, and a written report with prioritised actions and any need for a written scheme of control.
The law does not set a fixed annual or two-yearly renewal. ACoP L8 says to review it regularly and whenever there is reason to suspect it is no longer valid — for example changes to the water system or building use, checks showing controls are not working, changes to key personnel, or a case of Legionnaires’ disease linked to the system.
No. HSE states that health and safety law does not require landlords to obtain or produce a legionella test certificate. What you need is a risk assessment and proportionate controls. If an agent or lender asks for a certificate, send the assessment and a note of the controls.
Not usually. HSE says sampling is not usually required for domestic hot and cold water systems; temperature monitoring is the main check. Sampling may be recommended for higher-risk systems or where people are particularly susceptible, and is quoted separately if needed.
L8 is the Approved Code of Practice describing the control framework. HSG274 provides detailed technical guidance supporting L8, split across evaporative cooling systems, hot and cold water systems, and other risk systems. Assessors and dutyholders use both together.
Yes. Many landlords, HMO operators and businesses book both together so one coordinated visit covers the building. Fire risk assessments are typically £180–£350 for small premises and £350–£750 for medium or sleeping-risk buildings. Choose “Multi-service bundle” on the quote form and note legionella and fire.
No. Matched assessments are independent of repair sales. If remedial work is needed, you remain free to appoint your own contractors. That separation supports honest findings.
Lead times depend on location and system complexity. Many straightforward sites can be scheduled soon after the quote is accepted; complex multi-building estates may need phased surveys. Give your postcode and timeline on the quote form.
No. Safety Certificates UK / PASECOM GROUP LTD is a matching network. We coordinate the enquiry; a vetted independent assessor covering your area carries out the site work and writes the report.
Legionella risk assessment and control are framed by HSE guidance under health and safety law. Sources checked 2 October 2026:
Landlord & dutyholder guides
Straight answers first — then book via /quote/. These guides link back to this service page.
Tell us premises type, postcode and timeline. We match a vetted assessor — we do not assess in-house. Bundle with a fire risk assessment if useful. Start at /quote/.
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