How much does commercial drain unblocking cost?

We don't charge callout fees, and we quote fixed prices before starting any work. Most standard blockages are cleared for between £80 and £200. More complex jobs involving excavation or pipe replacement will cost more, but we'll always give you a clear price upfront. Commercial properties are priced the same as residential - we don't charge extra because it's a business.

Who is responsible for a blocked drain - tenant or landlord?

Generally, landlords are responsible for the structure and exterior of the property, including drains. Tenants are responsible for day-to-day maintenance and shouldn't put things down drains that cause blockages. In practice, if a tenant has clearly caused a blockage (flushing wet wipes, pouring fat down sinks), you may be able to recover costs from them - but you'll still need to get it fixed first. We can provide a report detailing what we found, which helps if you need evidence for a deposit dispute.

Can you work directly with tenants?

Yes. If you prefer, we can contact tenants directly to arrange access and carry out the work. We'll keep you informed throughout and send you the invoice and report afterwards. This is often easier for emergency callouts where you can't be on site yourself.

Do you offer accounts for landlords and letting agents?

We work with many landlords, letting agents, and property management companies on an ongoing basis. We can set up account arrangements with consolidated invoicing, agreed response times, and a dedicated contact. Call us to discuss what would work best for your business.

How quickly can you respond to a commercial emergency?

Our average emergency response time is 60 minutes across the UK. For commercial premises, we understand that time is money - a blocked toilet in a restaurant or office can mean closing or sending staff home. We prioritise accordingly and will always give you an honest estimate of when we can get there.

Can you provide documentation for compliance purposes?

Yes. All jobs come with a full report. For commercial properties, we can provide whatever documentation you need for health and safety records, building management compliance, or regulatory requirements. CCTV surveys come with timestamped video footage.

What if the drain is shared with other properties?

Shared drains often belong to the water company rather than individual property owners. We can assess the situation with a CCTV survey and advise whether it's something we can fix or whether you need to contact the water board. We've helped many property owners navigate this process and can produce reports suitable for submission to water companies.

Do you work out of hours?

Yes. We operate 24/7, including evenings, weekends, and bank holidays. There's no premium for out-of-hours callouts - you pay the same fixed prices whatever time we attend.

What payment methods do you accept?

We accept card payments, bank transfer, and cash. For account clients, we can arrange invoicing on agreed terms. We're happy to discuss whatever payment arrangements work for your business.

Commercial Emergency Callouts

Fast response. Fixed pricing. Minimal disruption to your business.

24/7 callouts, including evenings, weekends, and bank holidays

60-minute average response across all areas

Priority service for landlords, property managers, and clients

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Why buisinesses choose OneFlow

based on 180+ Google reviews

No callout fees

You only pay for work carried out. We don't charge just to turn up, diagnose the problem, or give you a quote. Perfect when you're managing costs across multiple properties or locations.

Fixed pricing

We tell you the cost before we start. No surprises, no creeping extras. The price we quote is the price you pay - essential when you need to report costs to clients or update your accounts.

60-minute response

That's our average emergency response time across the UK. Day, night, weekend, bank holiday - we're there. Because blocked drains don't wait for office hours, and neither do your tenants.

10-year guarantee

All repair work we complete is guaranteed. If something goes wrong with our repair, we come back and fix it free of charge. One less thing for you to worry about.

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Most blockages cleared in under an hour.

On site, diagnosed, and fixed - in a single visit.

98%

Of customers would recommend us.

6000+

Jobs completed last year alone.

Built for landlords and property managers

Managing rental properties and businesses means handling drainage emergencies at the worst possible times.

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Flexible access arrangements

We work around tenant schedules, keyholder availability, and business opening hours. Need us there after the restaurant closes? We'll make it work.

Consistent pricing across your portfolio

Whether it's a studio flat in Southampton or a restaurant in Oxford, you'll get the same transparent pricing.

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.

"We'll call you back" - then nothing for hours

Engineer arrives, quotes double what you expected

Can't tell you who's coming or when

Problem comes back? That's your problem

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OneFlow

What you get when you call us.

Speak directly to our team, not a call centre

Local engineers who live and work in your area

Fixed pricing agreed before we start

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.”
‍

— 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 a commercial drain unblocked?

24/7 callouts. No callout fees.

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Nationwide 60-minute average response.

★★★★★ based on 180+ Google reviews