Plumbing and heating services in Dennis Cape Cod

Friendly, local help you can count on.

Bill Dunphy Plumber on Cape Cod

What we do

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

We know homes and commercial buildings in Dennis

We’ve worked in neighborhoods throughout Dennis — from classic Cape homes to new builds. Whether it’s updating a bathroom, replacing a water heater, or getting your AC ready for summer, we bring local knowledge and clean, professional work to every job. Common work we do in Dennis includes:

  • Replacing aging water heaters

  • Installing mini-split AC systems

  • Bathroom fixture upgrades and rerouting plumbing

  • Boiler and furnace maintenance ahead of winter

  • General plumbing repairs and kitchen updates

Common questions

  • Nope. Dennis is part of our regular route. We also serve nearby towns such as Dennis Port and South Dennis.

  • Yes! We’re happy to schedule service around your renovation plans, vacation time, or seasonal needs.

  • Yes. We regularly service rental properties and summer homes in Dennis and surronding towns, and can help make sure everything’s in good shape before or after the season.

  • Absolutely. We’re fully licensed in Massachusetts (#31699) and always work to code.

Nearby areas we also serve

In addition to Harwich, Dennis, Chatham, Brewster and Yarmouth, we also work in surrounding towns like South Dennis, Dennis Port, West Harwich, and Yarmouth Port.

Why people keep calling us back

  • ★★★★★

    We had a great experience with Dunphy Plumbing & Heating in South Dennis. Bill took care of our tankless water heater, handled some outdoor plumbing issues, and gave us clear advice on what to plan for down the line. It’s hard to find tradespeople this reliable on Cape Cod. We’ll definitely call him again for any future plumbing or heating needs.

    – C. Johannessen

We serve your plumbing, heating, and cooling needs in Dennis Cape Cod

If you’re in Dennis and need a plumber, give us a call at (508) 243-1946 or reach by filling out the form below.