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Offices

Plumbing for offices and workplaces

Washrooms, kitchenettes, hot water, heating and electrics kept working, with the work done early, late or at weekends.

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  • Gas Safe registered Legal, signed-off gas work, every time
  • Fully insured Public liability insurance on every job
  • DBS-checked engineers Background-checked people in your home
  • Price agreed first The figure is settled before we begin
  • F-Gas certified Qualified for air con refrigerant work
  • Workmanship guaranteed Every job is backed by our guarantee
What we do

Office plumber and washroom refurbishment in London

When the only staff toilet stops flushing or the kitchenette tap will not turn off, the whole office notices. Ninja Plumbers is an office plumber for small and mid-sized workplaces, coworking spaces and serviced offices across London and nearby Surrey. We handle day-to-day office plumbing, commercial washroom refurbishment, heating and hot water. Our team also includes registered electricians and F-Gas certified air conditioning engineers, so a job that crosses trades is handled by one team. Our engineers are DBS-checked and directly employed, the price is agreed before work starts, and we can work early, late or at weekends so desks stay usable.

What jobs do we take on for offices?

  • Commercial washroom refurbishment and refits
  • Toilet, urinal and flush valve repairs
  • Leak tracing above ceilings and under floors
  • Kitchenette sinks, dishwashers and boiling water taps
  • Point-of-use water heaters and cylinders
  • Radiator, boiler and heating repairs
  • Office air conditioning installation and servicing
  • EICRs, lighting faults and extra sockets

One team, around your hours

Plumbing, heating, drainage, electrics and air conditioning from one company, so a job that needs more than one trade is booked once. We work early, late or at weekends so you can keep trading, and the price is agreed before anything starts.

At a glance

Who does plumbing for offices in London?

Ninja Plumbers does. We are a London plumbing, heating and electrical company with our own engineers and electricians, and we look after offices across Greater London and nearby Surrey, working around your opening hours with the price agreed before anything starts.

Who it is for
Offices in London and nearby Surrey
What we do
Plumbing, heating, drainage, electrics and air conditioning, from one team
Typical jobs
Commercial washroom refurbishment and refits; Toilet, urinal and flush valve repairs; Leak tracing above ceilings and under floors; Kitchenette sinks, dishwashers and boiling water taps
Where
Greater London, plus Guildford, Woking and nearby Surrey and north-east Hampshire towns
When
Planned work early, late or at weekends, around your opening hours. Emergency callout 24/7.
Who does the work
Gas Safe registered engineers, registered electricians and F-Gas certified air conditioning engineers. DBS-checked, directly employed and fully insured.
Price
Agreed with you before any work starts. Workmanship guaranteed. Card or cash.
How to book
Call 020 3576 5825, message us on WhatsApp, or use the form at the top of this page.

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What premises like yours need

What do offices need from their plumbing, heating and electrics?

  • Washrooms that cope with the whole team

    An office washroom takes far more use than a home bathroom, and most of it comes in a few busy periods. Cisterns and flush valves wear, push taps stick, and urinal cisterns can run all night if nothing controls them. The Workplace (Health, Safety and Welfare) Regulations 1992 expect suitable toilets and washing facilities with hot and cold, or warm, water for staff. When one cubicle is out of use, the queue for the rest grows fast.

  • Kitchenettes and drinks points

    Most offices run on one small kitchen: a sink, a dishwasher, perhaps a boiling water tap or a plumbed-in coffee machine and a fridge with a water feed. Each appliance needs a proper isolation valve, a sound waste connection and, where the supply feeds a machine, the right backflow protection. Hard London water scales up boiling water taps and dishwasher elements, so a filter or softener on the feed often means fewer breakdowns.

  • Hot water where people wash their hands

    Many offices heat water with a small unvented cylinder or with under-sink point-of-use heaters at each basin. Point-of-use heaters are handy but can fail quietly, leaving one basin cold for weeks before anyone reports it. A single cylinder serving several floors can mean long pipe runs and a wait for warm water. We look at how your water is heated, how far it travels and whether a new heater would need its own circuit.

  • Comfortable temperatures all year

    South-facing glass, a comms cupboard and a room full of laptops can make an office stuffy by lunchtime, while an ageing boiler may struggle on winter mornings. Our Gas Safe engineers work on domestic-sized boilers and heating, which covers many small offices. Larger commercial boiler plant needs engineers with commercial gas qualifications, and we will tell you straight if yours is beyond what we do. Our F-Gas certified engineers fit and maintain split air conditioning.

Planning a washroom refurbishment

If your washroom looks tired or keeps breaking down, a refurbishment is usually easier to manage than a string of emergency calls. Think about how many people use it at peak times, whether you need an accessible WC, and where the extractor fan will vent. Concealed cisterns behind panels look neat but need access hatches for later repairs. We can refit in stages, so one washroom stays open while another is worked on, and do the noisy work out of hours.

Who is responsible in a rented office

In a multi-let building, the landlord or managing agent often looks after the rising main, the drains and any shared heating, while tenants handle fittings inside their own space. Your lease sets out who does what, so check it before booking work on shared pipes. If water comes through your ceiling from the floor above, turn off your own supply if it helps, move equipment clear and tell the building manager. We can trace the source for whichever party is responsible.

Small checks that prevent bigger problems

Once a month, ask someone to look under the kitchenette sink and behind the dishwasher for drips or swollen boards. Listen for a toilet or urinal that keeps refilling, which wastes water. Cyclists' showers that are rarely used should be run for a few minutes each week, because stagnant water raises legionella risk, and the employer or landlord has a duty to manage that risk under HSE guidance. We can remove dead legs and fit thermostatic mixing valves where needed.

Services

Which of our services matter most to offices?

Questions

Questions about plumbing for offices

Can you work outside office hours?

Yes. We can start early, finish late or come at weekends, so disruptive work such as isolating the water or refitting a washroom happens when desks are empty. We agree the timing with you in advance, and the price is agreed before any work starts. For urgent problems, such as a burst pipe over the server cupboard, we run a 24/7 emergency callout.

Do you refurbish commercial washrooms or only repair them?

Both. We can replace a single cistern or strip out and refit a whole washroom with new WCs, urinals, basins, lighting and extraction. Because we also have registered electricians, the fan, lighting and any new water heater circuit are done by the same team. That saves you coordinating several contractors and keeps the programme shorter.

Our office has a large gas boiler in a plant room. Can you service it?

Our Gas Safe engineers work on domestic-sized boilers and appliances. A large boiler in a plant room is usually commercial plant, which needs an engineer with commercial gas qualifications. If you are not sure which you have, send us a photo of the boiler and its data plate, and we will tell you straight whether it is something we can take on.

How often should an office have an EICR?

There is no single fixed interval for every workplace. Electrical systems at work must be maintained so they stay safe, and a periodic inspection is the usual way to show that. Many offices work to a five-year cycle, but your insurer, your landlord or the condition of the installation may call for a shorter one. We can carry out the inspection and explain the results.

Are your engineers employees or subcontractors?

Our engineers are directly employed and DBS-checked, not subcontractors. That matters when someone is working in your office alongside staff, client files and IT equipment. They are fully insured, carry identification and work tidily around desks and meeting rooms. Our workmanship is guaranteed, and you can pay by card or cash.

Other businesses we work for

Related sectors

  • Shops & Retail

    Plumbing, heating, electrics and air conditioning for independent shops, fitted around trading hours so the till keeps running and customers barely notice.

  • Clinics & Dental Practices

    Hand-wash basins, WCs, hot water, drainage and heating for clinics and dental practices, with work planned around patient lists and clinical hygiene.

  • Blocks of Flats & Managing Agents

    Shared soil stacks, communal drains, cold-water tanks, booster pumps and leaks between flats, handled for managing agents and freeholders with clear reports on cause and location.

All commercial plumbing

Need something fixed at your premises?

Tell us what the premises are, what is wrong and when you are open, and we will agree a time and a price that work around your business.

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For ongoing maintenance or accounts, call management on 020 3576 5825.