Backflow Prevention
Installation, certification, and annual testing of backflow preventers — keeping you compliant with municipal cross-connection control bylaws and avoiding fines.
Commercial Plumbing
Plumbing built for business hours — and after hours.
Dependable service for retail, office, restaurant, and industrial clients. We work around your schedule, not the other way around.
Same-Day Available
Most calls scheduled today
24/7 Live Dispatch
A real local tech answers
Licensed & Warrantied
Workmanship guaranteed
About this service
Commercial Plumbing in the Niagara Region
Downtime costs money. When a commercial plumbing issue hits — a backed-up floor drain in a restaurant kitchen at peak service, a failed backflow on a retail unit blocking opening, a leaking riser above a tenant suite — you need a crew that responds fast, works clean, and understands that the building can't just shut down for three days.
Ottr Plumr serves restaurants, retail, professional offices, multi-tenant buildings, and light industrial clients across Niagara. We schedule around your operations: early-morning visits before doors open, after-hours work when needed, and weekend emergency response with itemized invoicing your accounting team will actually thank you for.
We become a single point of contact for property managers running multi-site portfolios — one number, one technician who knows your buildings, one set of records. Less time spent re-explaining the same boiler room to a new contractor every quarter.
And we handle the paperwork side of commercial plumbing properly: backflow certifications filed with the municipality, code-compliant grease-trap sizing for food service, and clean documentation for landlord-tenant disputes when they pop up.
What we do
Specialties under Commercial Plumbing
Restaurant Plumbing
Grease traps, three-compartment sinks, dishwasher hookups, mop sinks, and floor drain service for food service operations of every size.
Property Management Support
On-call service for property managers — single point of contact across multiple buildings, consolidated invoicing, and documented service history.
Preventive Maintenance
Scheduled inspections, drain cleaning, water heater service, and backflow testing to prevent the after-hours emergency calls nobody wants.
Commercial Hot Water
Service, repair, and replacement of commercial-grade tank, tankless, and recirculating hot water systems.
Tenant Fit-Outs
Plumbing rough-ins and finals for new tenant build-outs — coffee shops, salons, dental offices, you name it.
Why Ottr Plumr
Local. Honest. Warrantied.
We earn the call back by doing the job right the first time — and being straight with you about what your home or business actually needs.
- Insured for commercial work
- Off-hours and weekend service available
- Itemized invoicing for your accounting team
- Single point of contact for multi-site portfolios
- Documented service history per building
- Fast diagnosis to keep your operation moving
Common questions
Commercial Plumbing FAQs
Do you offer after-hours service for businesses?
Yes. We schedule after-hours, evening, and weekend service for commercial clients so plumbing work doesn't disrupt your operations, customers, or tenants. Just tell us when works.
Can you handle ongoing maintenance for multiple properties?
Absolutely. We work with property managers across Niagara on multi-site portfolios with consolidated monthly invoicing, a single point of contact, and a full service history available on request.
Do you do backflow testing and certification?
Yes — installation, repair, and annual certified testing of backflow preventers, with documentation submitted to your municipality so you stay compliant with cross-connection control programs.
How fast can you respond to a commercial emergency?
Existing commercial maintenance clients get priority dispatch — typically within 1–2 hours during business hours and same-night for after-hours emergencies. New commercial calls are handled as fast as our schedule allows, often same-day.
Do you provide quotes for commercial projects in writing?
Always. Commercial work gets a detailed scope, line-item pricing, and clear assumptions in writing — so you (and your finance team) know exactly what you're approving.
Where we work
Commercial Plumbing across the Niagara Region
Local commercial plumbing in every city — pick yours.
Commercial Plumbing in St. CatharinesCommercial Plumbing in Niagara FallsCommercial Plumbing in WellandCommercial Plumbing in ThoroldCommercial Plumbing in LincolnCommercial Plumbing in GrimsbyCommercial Plumbing in PelhamCommercial Plumbing in Fort ErieCommercial Plumbing in Port ColborneCommercial Plumbing in Niagara-on-the-LakeCommercial Plumbing in West LincolnCommercial Plumbing in Wainfleet
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Other services
Residential Plumbing
Whole-home plumbing service for Niagara families — drains, faucets, fixtures, leaks, re-pipes, and renovations.
Heating Systems
Stay warm all winter. Furnace, boiler, and radiant heat install, repair, and tune-ups across the Niagara Region.
Water Heaters
Hot water, every time. We install, replace, and service tank and tankless systems sized properly for your home or business.
Sump Pumps
Don't wait for the next storm. Pro-grade sump pumps and battery backups keep your basement dry year-round.
Repairs & Diagnostics
Honest diagnosis. Fair price. We fix what's broken without trying to sell you what isn't.
Drain Cleaning
Slow sinks, gurgling toilets, sewer backups — cleared properly with snaking, hydro-jetting, and camera inspection across Niagara.
Emergency Plumber
24/7 emergency plumbing across Niagara — burst pipes, sewage backups, no hot water, flooding. Real local techs, fast dispatch.
Ready to book commercial plumbing?
Same-day service available across the Niagara Region.