Your experienced and trusted local plumber.

Commercial and residential plumbing, handled with care.

Caldwell Plumbing is proud to provide plumbing in Oshawa, Ajax, Whitby and surrounding areas of Durham Region.  We specialize in all residential and commercial plumbing and drain services with a team of experts available at any hour of the day with are 24h dispatch system.

Our team of professionals at Caldwell Plumbing is a family owned and operated company – we’ve been providing local plumbing services since 1979. We are trusted for both residential plumbing and commercial plumbing services in Oshawa, Durham Region and the Greater Toronto Area because we specialize in all aspects of plumbing and drain services – big and small. We truly care about your home and business, that’s why we’re here with a solution whenever you call. Discover why so communities rely on Caldwell Plumbing.

Family Owned
& Operated

Caldwell Plumbing is a fully licensed and insured, family owned and operated company. That’s something we take a lot of pride in, and our customers feel the same. We’ve been serving the GTA, Durham Region and surrounding communities for over 30 years, and it shows in the level of experience and quality of work we bring to every project. Over the last three decades, we’ve seen it all, and fixed it all for families and businesses in our community. We wear our experience and reputation as local plumbers as a badge of honour.

Learn more about us

24 Hour
Emergency Service

For residential and commercial customers, a plumbing emergency can be a devastating experience. Our 24/7365 local emergency plumbing services are just a phone call away, fixing even the most stressful of situations. With 7 trucks on the road and 12 employees we are available 24 hours a day, 7 days a week, and every day of the year to handle all of your plumbing emergencies. We are trusted across the Durham Region and GTA as the “go-to” local plumber for emergency services.

Read about our emergency plumbing services

Free Estimates

We offer free estimates on our work for commercial plumbing and residential plumbing. Get in touch with us, and one of our local plumbing experts will assess the project and give you an estimate for the completion of the work. There’s no project too big or small - talk to us for a free estimate on your next project.

Get your free estimate

Request A Callback

We are here to take your call. Enter your phone number and one of our local representatives will call you back within the same day.

Local plumbing services

Our plumbers take pride in creating a positive experience, and a successful outcome for every project or emergency situation. Here are just some of the ways we can serve you:

Customer Reviews

See what some of our customers have to say about our plumbing services.





Camille - Toronto

We had a major leak in the basement due to a drain issue in the kitchen. An appointment was set very rapidly. Ryan found out very quickly what the issue was about. He work fast, was very nice. Very professional. Finally a good plumber!!! I would definitely recommend them. Thanks a lot.

Areas We Service

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