Construction Site Welfare Facilities — What HSE Requires

Welfare on UK construction sites isn’t optional, and it isn’t guesswork either, because the law sets it out. The Construction (Design and Management) Regulations 2015 (CDM 2015) and the HSE’s guidance set it out. It applies from the first day work starts, even on small sites. If you get it wrong, you can face an improvement notice, a stop-work order, or a fine. Here is what the rules require, in plain terms.

The legal basis

CDM 2015, Schedule 2, sets out the minimum welfare facilities for any construction site. A general duty sits beside it in the Workplace (Health, Safety and Welfare) Regulations 1992. That duty is to provide adequate welfare facilities for anyone working on site. It falls on the principal contractor for the project, not on individual subcontractors, although the site manager does the daily work. In practice, the contractor who runs the site day-to-day must make sure it happens.

Toilets: the core requirement

HSE guidance requires suitable, sufficient toilets. Here is what that means, because the details matter. The toilets must be:

• Adequately ventilated and lit
• Kept clean
• Separate facilities for men and women, or rooms with lockable doors usable by either (portable toilets with lockable doors satisfy this)
• Within reasonable distance of where people are working. HSE doesn’t specify an exact metre figure for construction sites. The working principle across the industry is that workers shouldn’t walk an unreasonable distance or wait an unreasonable time

HSE publishes no single mandated ratio for construction. Some office and workplace guidance does, and it references 1 toilet per 25 people. For construction, accepted trade practice is 1 toilet per 15-20 workers as a working minimum. Most principal contractors specify this in their site setup.

Adjust the ratio upward on sites with a lot of physical labour, hot conditions or long shifts. A typical 20-30 person site needs at least 2 units. Larger sites of 100+ scale in proportion, since more workers need more units.

Washing facilities — not optional, and not the same unit as the toilet

HSE also requires washing facilities, separate to the toilet requirement. These must include the following, although sites can combine them:

• Clean hot and cold (or warm) running water
• Soap and a means of drying hands
• Facilities near the toilets and near any changing rooms

A welfare unit combines a toilet, wash basin and rest area in one structure. It is priced from £85-£140/week for hire. Most UK sites use one to meet both the toilet and washing rules in a single unit, because it saves space. It works well on sites with no mains water yet.

Drinking water

You must provide an adequate supply of drinking water, yet many sites forget it. Mark it clearly if anyone could confuse it with non-drinking water. Cups or a drinking fountain must be available. Smaller sites often overlook this, so it is one of the common gaps HSE inspectors flag.

Rest facilities

Workers need somewhere to sit, get out of the weather, and eat meals. That place must be away from construction dust and materials. It must have a way to boil water for hot drinks. Where needed, it must have a way to warm food too. A site with no permanent office can use a welfare unit or rest pod instead.

Changing rooms and storage for clothing

Some workers need to change into site-specific clothing (PPE, waterproofs). For them, CDM 2015 requires changing rooms with secure storage for clothing not worn on site. It also requires separate storage for PPE. This matters more on sites with wet trades or hazardous materials, because street clothing can’t be worn on top of or underneath work gear there.

What HSE inspectors actually check on a site visit

In practice, inspectors ask three questions about welfare, because they must judge it fairly. Is it enough for the number of people on site? Is it in good working order (clean, stocked, functioning)? Does it stay that way throughout the project, rather than being provided on day one and forgotten?

A common finding is a site that had enough facilities at the start but let servicing lapse as the workforce grew. So match your hire contract’s servicing frequency to your actual headcount. Don’t rely on the headcount from your first order.

Getting the numbers right for your site

Here is a rough planning guide for site welfare hire. Use it as a starting point, since every site differs:

• Small site, up to 15 workers: 1 standard unit (from £25-£35/week) plus separate access to washing facilities, or 1 welfare unit covering both
• Medium site, 15-40 workers: 2 standard units plus a welfare unit, or 2 welfare units
• Large site, 40+ workers: scale standard units at roughly 1 per 15-20 workers, with dedicated welfare units for washing and rest. Consider a disabled-access unit (from £35-£45/week) if someone with mobility needs might visit, such as assessors, clients or building control officers

Servicing frequency matters as much as unit count

HSE guidance expects clean, working facilities throughout the project. One delivery is not enough. Weekly servicing is still the standard default for construction hire. However, sites with larger workforces or longer shifts should ask for twice-weekly servicing when they book. Don’t wait for someone to report a problem.

Booking site welfare without the guesswork

Give your supplier your site postcode, expected workforce size and project duration. Say whether you need washing facilities included. Then they can recommend a compliant unit mix without a site visit.

Send those details via our online quote form. Then you’ll get a recommended setup with confirmed weekly pricing by email within 30 minutes, Monday to Saturday. Because you need no phone call, it takes minutes.

Where we deliver

We supply units across the UK. For example, see our pages for portaloo hire in London, portaloo hire in Manchester, portaloo hire in Hackney, portaloo hire in Tower Hamlets, portaloo hire in Basildon and portaloo hire in Leeds. Each page explains local delivery and gives a clear price guide.

Also, compare welfare unit hire with construction site toilet hire before you book. Then send us your details through the online quote form and we will reply within 30 minutes, Monday to Saturday.