Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Cornerstone Plumbing. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
Cornerstone Plumbing is a Milford, Massachusetts plumbing and heating company offering water heater and boiler installation, leak diagnosis and repair, gas piping, and bathroom remodeling for homeowners and businesses across central Massachusetts. The Massachusetts State License Registry lists an active plumber license for the company. Reviewers consistently praise fast response times, including same-day and after-hours calls, along with fair, clearly explained pricing. A 2026 review reported a leaking water heater install and unreturned follow-up calls, and a 2024 review criticized a markup on a replacement part.
Extremely pleased with their timely response and service. They communicated well and showed up on time and got the work done as needed for me.
Cornerstone was extremely quick in response to my Inquiry and was very professional from our first phone call to the end of repair service. We called about a broken outdoor hose spigot that was leaking and a potential broken water shut off valve inside the house. Josh was extremely informative as to what may have to be done for repairs in a case by case basis. We luckily were able to simply replace the outdoor spigot and avoid any repairs indoors. Having a company we can trust to not pull one over on us is very reassuring and I will be using them again if any other issues arise.
We recently discovered a leak in the piping connected to our hot water heater and contacted Cornerstone Plumbing for help. They came out first thing the next morning, quickly identified the failed line, and repaired it efficiently. Within just a few hours, we were back up and running with hot water. Their team was professional, prompt, knowledgeable, and easy to work with throughout the entire process. We really appreciated their quick response and quality workmanship. I would highly recommend Cornerstone Plumbing to anyone in need of reliable plumbing service.
Paid Cornerstone Plumbing and Heating Co $2,800 for a water heater install. They left the old unit in my garage and didn't haul it away, and the new one was leaking from a fitting within a week. Won’t return my calls.
Our second floor bathroom toilet had a leak that was leaking through the floor and coming out of our light fixture above our dining room table. Tyler came and talked with me about what was going on and determined that it was the wax seal failing on the toilet. He got to work and now we have the peace of mind that our dining room won't have an unwelcome water fountain feature. This isn't our first time working with Cornerstone Plumbing and Heating and it won't be our last!
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2 changes recorded — last scanned Sep 19, 2026.
Transparent diagnostics5.0
Quoted price holds5.0
Midnight and weekend help5.0
Broad plumbing and HVAC range5.0
Rapid response5.0
Repeat, years-long customers5.0
Faucet, valve, toilet and tub-drain repairs3.6
Boiler and mini-split installed on time, left clean3.3