How much does commercial drain cleaning cost?

Costs depend on the size of your drainage system and the work required. Most commercial drain cleaning jobs cost between £150 and £400. We quote fixed prices before starting - no hourly rates, no surprises. The price we quote is the price you pay.

How often should commercial drains be cleaned?

It depends on your business type and drainage load. Restaurants and food businesses typically need monthly cleaning due to grease buildup. Offices might only need annual maintenance. Retail, schools, and healthcare sites usually benefit from quarterly cleaning. We can assess your site and recommend the right schedule.

What are the signs my commercial drains need cleaning?

The main warning signs are slow-draining sinks, toilets, or floor drains, unpleasant odours coming from drains, water pooling around drain covers, gurgling sounds from pipes, and recurring blockages. If you're noticing any of these, your drains likely need attention before a full blockage develops.

What's the difference between drain cleaning and drain unblocking?

Drain unblocking is reactive - clearing a blockage that's already happened. Drain cleaning is preventative - removing buildup before it causes a blockage. Regular cleaning reduces emergency callouts and keeps your drainage system working efficiently. Both use similar techniques like high-pressure jetting.

What is high-pressure drain jetting?

High-pressure jetting uses a powerful water jet to blast away grease, debris, scale, and other buildup from inside your pipes. It's the most effective way to clean commercial drains thoroughly. The pressure clears the full width of the pipe, not just a channel through the middle like rodding can.

Can you clean drains without disrupting our business?

Yes. The equipment is compact, the process is relatively quick, and there's no digging or major disruption. Most businesses stay open throughout. We can also schedule cleaning for early mornings, evenings, or quieter trading days if you prefer.

Do you offer drain cleaning contracts?

Yes. For businesses that need regular drain cleaning, we offer scheduled maintenance agreements. We'll agree a cleaning frequency, track when you're due, and contact you to arrange each visit. You get consistent service, proper documentation, and one less thing to manage.

Who is responsible for cleaning commercial drains?

If the drains are within your property boundary, you're responsible for keeping them clear. Drains that connect to the public sewer outside your boundary are usually the water company's responsibility. If you're not sure where responsibility lies, we can advise when we assess your site.

Can drain cleaning prevent flooding?

Yes. Most drain flooding is caused by blockages that could have been prevented with regular cleaning. Removing buildup before it becomes a blockage keeps water flowing freely, even during heavy rain. This is especially important for sites with car parks, yards, or external areas where leaves and debris enter the system.

Can you clean drains at multiple sites?

Yes. We work with landlords, facilities managers, and businesses with multiple locations across Southern England. One contract, one point of contact, consistent service across all your sites. We can provide consolidated reporting and invoicing to simplify your administration.

What happens if you find a problem during cleaning?

If we spot damage, root ingress, or other issues while cleaning your drains, we'll let you know and explain your options. We can often carry out repairs there and then, or we'll quote separately for more complex work. You'll never be left without a clear picture of what's needed.

Commercial drain cleaning

Keep your business running with clear, free-flowing drains.

High-pressure jetting to clear buildup and prevent blockages

Scheduled cleaning tailored to your business

24/7 availability for urgent drain cleaning

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Why choose OneFlow?

based on 180+ Google reviews

No callout fees

You only pay for the cleaning work itself. We don't charge to turn up, inspect, or quote. Makes it easy to get a price without commitment.

Fixed pricing

We quote a fixed price before we start. No hourly rates that spiral, no surprises based on what we find. The price we agree is the price you pay.

Same-day availability

Drains backing up and affecting your business? We can often attend the same day. Our local engineers mean faster response when you need drains cleared urgently.

Full documentation

Every clean comes with a report detailing what we did and what we found. Ready for your maintenance records, compliance files, or facilities management reporting.

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Most drains cleaned in under an hour

On site, jetted, and flowing freely - with minimal disruption.

98%

Of customers would recommend us.

6000+

Jobs completed last year alone.

Reliable service for busy businesses

Commercial drains handle far more than domestic systems - more waste, more water, more potential for problems. When drains slow down or back up, it affects staff, customers, and your ability to trade.

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Preventative cleaning

Regular jetting stops blockages before they happen. We'll set up a schedule based on your site and usage - you won't need to think about it until we call to arrange access.

One team for all your sites

Managing multiple properties? One point of contact, consistent service, and consolidated reporting across your entire portfolio.

Why choose a local team over the big names?

See how we compare to the national franchises.

The big names

What you often get with the big names.

Hourly rates that keep climbing the longer they're on site

Different contractor every time who doesn't know your drains

"We'll need to come back" - and charge you again

Chase them for reports and paperwork

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OneFlow

What you get when you call us.

Fixed pricing agreed before we start

Same local engineer who knows your site

Job done properly first time, guaranteed

Full report and guarantee on every job

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Drainer of the
year 2025

The Drainage Awards

What our customers say

Real reviews from real customers.

“Called at 6am with sewage coming up through the shower. Engineer arrived before 8, fixed it within the hour. Can't thank them enough.”

— James T, Southampton

“Third company I'd tried that week. The other two never showed. OneFlow answered, turned up same day, and actually fixed it. Should have called them first.”

— Michelle R, Brighton

“No messing about. Showed me the camera footage, explained what was wrong, gave me a price, and got on with it. Exactly how it should be.”

— David H, Portsmouth

“Blocked drain on Christmas Eve. Thought we'd be stuck for days. They came out that evening and sorted it. Absolute lifesavers.”
‍

— Sarah K, Guildford

“We've used them for three rental properties now. Always answer the phone, always turn up, always fair on price. Hard to find.”
‍

— Mark L, Bournemouth

“Engineer was honest and said we didn't need half the work another company had quoted for. Saved us hundreds. We'll use them every time now.”

— Karen W, Winchester

“Toilet blocked on the morning of our daughter's birthday party. They had someone here within the hour and sorted it before the guests arrived.”

— Rachel M, Crawley

“Other companies quoted over the phone then doubled it on arrival. OneFlow quoted £180, charged £180.”
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— Tom S, Bournemouth

“Drainage issue had been misdiagnosed twice by other firms. OneFlow found the real problem in ten minutes with their camera. Fixed the same day.”

— Angela D, Eastbourne

“Rang at 11pm expecting to leave a voicemail. Actual person answered. Engineer here by midnight. Didn't think companies like this still existed.”

— Chris B, Woking

FAQs

Still have questions?

Get in touch with our friendly support team.

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Need your commercial drains cleaned?

24/7 callouts. No callout fees.

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60-minute average response across the UK.

★★★★★ based on 180+ Google reviews