Verified record
William J Malcolm & Son is a Cambridge plumbing outfit whose reviewers describe sticking with them for years. One customer wrote in 2022 that they had called on the company for over a decade for everything from a leaky sink to a full boiler installation at home and a three-basin sink at their store. The reviews with real detail describe prompt, straightforward service: a 2022 review described a same-day fix for a leaking, clogged drain and a failed garbage disposal after a short, polite phone call, and a 2024 review said a technician took the lowest-cost approach to a repair and then stayed to handle an add-on faucet fix. One 2022 review is a different kind of complaint, and worth knowing about even though it says nothing about the plumbing itself: the reviewer, a cyclist, described a company truck honking at and then cursing at them on the road. According to its BBB profile the business has been operating 143 years; it isn't BBB-accredited and carries no rating. With a short but positive written record on the actual plumbing work, William J Malcolm & Son looks like a solid, no-drama call for routine repairs and boiler jobs — the road-rage account is worth weighing on its own terms, separate from what customers say about the work.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from William J Malcolm & Son Inc. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
I am very pleased with the service I got from Kevin today. He showed up when promised, took the lowest-cost approach to fix a problem, and then stayed on to take care of a last-minute add-on faucet renew. Looking at the previous reviews I am somewhat perplexed by the complaint about the front office. I have been a Malcolm customer for several years and have never experienced this.
I can't comment on their plumbing ability, but I can tell you they aren't the kind of guys you want in your house. Their truck honked at me while I was biking, then passed inches away while cursing me out. Yes, driving brings out the worst in many people but these guys were exceptional....and not in a good way. Vote for civility by taking your money and your business elsewhere.
We had a faulty garbage disposal and clogged drain that was leaking. They visited on the same day following a short, polite, and professional phone conversation. They visited on time and despite an end of day scheduling managed to fix the drain and replace the disposer in no time with no hassle. Highly recommended!
I've used them for over 10 years for everything from a leaky sink to installing a new boiler at my home to putting in a 3 basin sink in my store. They are good people
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1 change recorded — last scanned Jul 1, 2026.