If you are searching for reliable commercial plumbing in Toronto, you need a partner who understands that business operations cannot stop for plumbing failures. At Top One Plumbing, we provide licensed, code-compliant commercial plumbing Toronto services designed for offices, restaurants, retail spaces, and multi-unit buildings across the GTA. With over 12 years of experience and 367+ five-star reviews, we ensure minimal disruption to your tenants and customers.
Commercial Plumbing Toronto: Licensed Services for Businesses & Property Managers
If you manage a commercial property in Toronto, you need a plumber who understands that business operations can’t stop for plumbing problems. Professional commercial plumbing in Toronto requires a different approach than residential work — faster response times, code-compliant installations, minimal disruption to tenants, and coordination with building management.
At Top One Plumbing, we’ve been providing commercial plumbing in Toronto, North York, Scarborough, Etobicoke, Willowdale, and across the GTA for over 12 years. We serve offices, restaurants, retail spaces, multi-unit residential buildings, and property management companies with the same professionalism that’s earned us 367+ five-star Google reviews.
Here’s a complete overview of our commercial plumbing services.
Commercial Plumbing Toronto: Washroom Installation & Repair
Washrooms in commercial buildings see heavy daily use, which means fixtures wear out faster than in residential settings. We handle all aspects of commercial washroom plumbing in Toronto, including:
- Toilet and urinal installation and replacement
- Commercial sink and faucet installation
- Flush valve and flushometer repairs
- ADA-compliant fixture upgrades
- Water-efficient fixture retrofits to reduce utility costs
Whether you’re fitting out a new tenant space or upgrading an aging washroom, we work around your business hours to minimize disruption to operations.
Grease Trap Installation & Maintenance in Toronto
Toronto restaurants and food service businesses are required by the City of Toronto’s Sewer Use Bylaw to install and maintain grease interceptors. Failure to comply can result in fines and blocked sewer lines.
We provide complete grease trap installation in Toronto, including:
- New grease interceptor installation to City of Toronto specifications
- Grease trap cleaning and pumping schedules
- Compliance inspections and documentation
- Emergency service for blocked grease lines
If you’re opening a new restaurant or café in Toronto, a properly sized and installed grease interceptor is a requirement before you can operate. We handle the installation and help you set up a maintenance schedule that keeps you compliant.
Backflow Prevention Device Installation & Testing
The City of Toronto requires backflow prevention devices on commercial properties to protect the municipal water supply from contamination. These devices must be installed by a licensed plumber and tested annually by a certified tester.
Our backflow prevention services include:
- New device installation (RPZ valves, double check valves)
- Annual testing and certification
- Repair and replacement of failed devices
- Documentation for City of Toronto compliance
If your building has received a notice from the City requiring backflow testing, we can schedule the test and provide the required certification paperwork. Consequently, you stay compliant without the hassle of coordinating multiple contractors.
Commercial Water Heater Systems
Large facilities require specialized commercial plumbing Toronto expertise to handle high-demand water heater systems. A failing water heater in a restaurant, gym, or multi-unit building affects every tenant and customer.
We install and service:
- High-capacity tank water heaters for multi-unit buildings
- Commercial tankless water heaters for on-demand hot water
- Boiler systems for large commercial and industrial spaces
- Recirculation systems to eliminate wait times at distant fixtures
Every commercial water heater installation we perform meets Ontario Building Code requirements and includes full testing before handover.
Commercial Sump Pump & Flood Prevention
Commercial properties are just as vulnerable to basement flooding as residential homes — and the damage costs are typically much higher. We provide commercial sump pump installation in Toronto for offices, retail spaces, and multi-unit buildings, including:
- Commercial-grade sump pump installation
- Dual pump systems with automatic switchover
- Battery backup and generator-powered backup systems
- Backwater valve installation for sewer backup protection
As of May 2026, the City of Toronto’s Basement Flooding Protection Subsidy covers up to $6,650 per property for qualifying flood prevention work. In addition, commercial properties may be eligible depending on their classification.
24/7 Emergency Commercial Plumbing Toronto
Plumbing emergencies in commercial buildings can shut down operations, damage inventory, and create health hazards. We provide emergency commercial plumbing in Toronto with fast response times for:
- Burst pipes and major leaks
- Sewer backups and drain blockages
- Water heater failures
- Flooding from any source
- Gas line issues
Our team arrives with fully stocked service vehicles and the experience to diagnose and resolve commercial plumbing emergencies quickly. Therefore, your business gets back to normal as fast as possible.
Plumbing for Property Management Companies
Top One Plumbing works with property management companies across the GTA to provide reliable, ongoing plumbing services for their building portfolios. We understand the unique needs of property managers:
- Fast response to tenant maintenance requests
- Coordination with building superintendents and on-site staff
- Detailed invoicing for unit-level billing
- Scheduled preventive maintenance programs
- Priority service for emergency calls
If you manage multiple properties in Toronto and need a dependable plumbing contractor, we’d welcome the opportunity to discuss a service agreement that works for your portfolio.
Commercial Plumbing Toronto: Expert Drain Services
Commercial drain problems can disrupt business operations and create unsanitary conditions. We provide complete commercial drain services, including:
- Drain snaking and hydro jetting for stubborn blockages
- Camera inspection to diagnose hidden drain issues
- Drain line repair and replacement
- Floor drain installation and maintenance
- Root intrusion removal
For more on our drain services, see: Drainage and Water Control Services by Top One Plumbing
Industries We Serve in Toronto & the GTA
Our commercial plumbing Toronto team covers a wide range of property types and industries:
- Offices & corporate buildings — washroom maintenance, water heaters, backflow testing
- Restaurants & food service — grease traps, commercial sinks, gas line work
- Retail spaces — tenant fit-out plumbing, washroom installations
- Multi-unit residential buildings — common area plumbing, boiler systems, sump pumps
- Gyms & fitness centres — shower plumbing, high-demand water heaters
- Medical & dental offices — specialized fixture installation, backflow prevention
Why GTA Businesses Choose Top One Plumbing for Commercial Plumbing
With over 12 years of experience and 367+ five-star Google reviews, Top One Plumbing is one of the most trusted commercial plumbing companies in the GTA. Here’s what sets us apart:
- Licensed and insured — Fully licensed with the City of Toronto for all commercial plumbing work
- Minimal disruption — We schedule work around your business hours
- Serving the entire GTA — Toronto, North York, Scarborough, Etobicoke, Mississauga, Vaughan, Ajax, Markham, Richmond Hill, and surrounding areas
- Transparent pricing — Detailed quotes and itemized invoices for property managers
- Emergency response — Fast service for urgent commercial plumbing issues
Get Commercial Plumbing Service in Toronto — Call Today
Whether you need a grease trap installed, a backflow device tested, a washroom upgraded, or an emergency repair, Top One Plumbing handles every commercial plumbing job in Toronto with professionalism and precision.
Call us at (416) 949-2919 or schedule a plumber online to discuss your commercial plumbing needs.
Top One Plumbing Inc. — Licensed plumber proudly serving Toronto businesses and the GTA since 2013.