Plumbing and heating services on Cape Cod

Local, reliable, and done right.

• Local expert on Cape Cod
• 20+ years experience
• Fully licensed & insured

Bill Dunphy plumber on Cape Cod standing in front of van

The people behind the work

We’re a local plumbing and heating team serving Cape Cod commercial and residential properties. You won’t be passed around or sent a stranger — when you call, we’re the ones who show up. We’re known for being on time, easy to work with, and always doing things the right way.

What we do

We handle a wide variety of plumbing and heating jobs on Cape Cod, including:

Icon of gas line

Areas we serve

We offer plumbing and heating services to commercial and private homeowners across Cape Cod, including:

Harwich, Dennis, Chatham, Brewster, Yarmouth and surrounding towns.

Need help now?

We offer emergency plumbing services across all of Cape Cod — 24/7.
No call centers. No delays. Just fast, local help when you need it.

Why people choose us

We know Cape Cod properties

Plumbing on Cape Cod has its quirks. Old pipes, salty air, seasonal use. We’ve worked in every kind of house and we know what to look out for.

Our work speaks for us

We don’t need big ads or flashy deals. Most people find us through someone who already used us — and that’s the best kind of recommendation.

No call centers – just us

When you call, we pick up. You won’t get bounced around. We’ll ask what’s going on, give you straight answers, and show up ready to fix it.

What commercial and residential owners are saying

  • ★★★★★

    I highly recommend Dunphy Plumbing. Bill (the owner) personally responded to me when I inquired about replacing a leaking faucet and adding a water line to my refrigerator. He showed up the very next day, perfectly on time! While in my home he was prepared when he came (even bringing a replacement faucet incase he couldn’t repair mine), efficient with his time and cleaned up after himself. Even with the next day appointment and the amount of work he had to do for me, his invoice was very reasonable…maybe a little surprising in a good way.

    – H. G. Newton

  • ★★★★★

    These guys are awesome, super responsive, nice, knowledgeable, and did such a great job. I would highly recommend and honestly wouldn’t use anyone else. I’ll be using Dunphy for any future plumbing & heating needs.


    – K. Fullerton in South Dennis

  • ★★★★★

    Bill responded immediately to my call about a leak in the basement. He fit me in to his schedule the same day and identified the problem. I had to wait for a part to arrive and Bill gave me updates and was very pleasant to deal with. I highly recommend him.

    – M. Stryker

  • ★★★★★

    Both Bill and his helper were extremely professional, courteous, and hard-working. They converted a new propane fireplace to natural gas run from our house. When the fireplace was ready to be connected to the gas line, there was a bump in the road as we did not have the right tubing. Bill gladly went to pick up the correct part without an issue I would highly recommend Bill Dunphy for your heating and plumbing needs. Great service for a reasonable cost.

    – J. Soucy

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Get in touch

Have a plumbing issue? Whether it’s something small or more complex, we’re here to help.