Verified record
Shanahan Electric is a one-person shop run by Tom Shanahan out of Marlborough; Angi's profile lists 21 years of experience and both free written estimates and emergency service. The written reviews on file date to 2011, and they read like a snapshot of one busy stretch: a customer who bid the job out to several electricians picked Tom for being the fastest to respond and the best priced, and described him and another licensed electrician working a long Friday to restore power before the weekend. Another described using Tom as a subcontractor for driveway lighting and hot-tub power on a larger landscaping project, then hiring him directly afterward. Angi's own summary of the reviews also mentions a generator install among the work covered. All three carry five stars. With the written record dated to 2011, it's worth asking about current availability and pricing directly before booking.
Tom Shanahan was highly response via email - usually within an hour or two. He helped to work out the design issues, including coming to my house twice to review our needs before we signed on to the contact. We bid the contract out to several electricians, and Tom was not only the most response, he also had the best price. He showed up for the project, with another licensed electrician (not just a trainee) right on time. They worked a very long day (Friday) to ensure that I had power returned to the house before the weekend. The project wasn't finished the first day, and he returned the next business day (Monday) for an additional half day to finish the project - all without any change in cost. I am an engineer by trade, and fairly experienced in electrical wiring - and I am impressed with their work. They clearly have pride in their work (they even had me place a chair near the electrical panel so I could have my neighbors come over and appreciate the "best electrical panel in Northborough"!) No surprise, everything worked the first time we powered up. I decided to purchase the generator after the recent storms and many days of power outages, because I travel a fair amount and have young children at home. Tom stated several times that he is on-call for us anytime we need - that the work comes with his personal commitment (warranty) to resolve any problems should they occur, and wanted to make sure that my wife had his number in case she should need any help when I am out. Again, further evidence of his commitment and pride. I highly recommend Tom for any electrical project you should have. It was one of the best contractor/service experiences I have had.
It was excellent. Everything was 'A' across the board. I referred two other people to them and both had excellent experiences as well.
Tom, did some work as a subcontractor on a large landscaping project we undertook through Sawyer Services. He installed driveway lighting and power to the hot tub. We were very pleased with this and when we were looking for the work described above contacted Tom directly. Tom is very flexible, responsive and can be fully relied upon. He went out of his way to work around the schedule of our carpenter and did an excellent job. Would have no hesitation in recommending Tom and will be the first person I call for any future electrical work.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Shanahan Electric. Use it to sanity-check bids, then get the real number in writing.
Standard receptacle swaps — a new dedicated circuit is a bigger job ($350–$750).
Flush mounts, pendants, chandeliers — hung on existing boxes.
Estimated range
$530 – $1,100
Typical electrical project around $820
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1 change recorded — last scanned Aug 2, 2026.
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