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A stopped-up toilet, two leaking outside valves and a badly corroded boiler line, all handled within an hour: that is the visit a November 2022 Google reviewer described from D Larsen Plumbing & Heating, a small Marshfield shop the BBB lists as owned by David Larsen, started in 1996 and employing three. In a March 2025 Nextdoor post, a Cohasset neighbor said they use David Larsen, that he comes on time, fixes what is needed and cleans up. A February 2024 reviewer called the crew responsive and thorough, with honest rates. The business holds 4.6 stars from 10 Google ratings and an A+ BBB grade. David Larsen's Massachusetts plumber license, #11616-PL-M, is active on the state registry.
“We use David Larson Plumbing and Heating of Marshfield. He does excellent work. Comes on time, fixes what’s needed and cleans up .”
Very responsive and thourough, clean workers , job always done in timely fashion. Honest rates
I had 4 problems a stopped up toilet, 2 leaking outside valves and a line to my boiler that was badly corroded. The 2 men were very courteous and professional. They took care of the toilet together and then individually worked on the other problems. Everything was done within an hour and left clean and neat. I would highly recommend them.
Very responsive...knows his trade...I highly recommend Larsen
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1 change recorded — last scanned Aug 5, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from D Larsen Plumbing & Heating. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
