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Gregory C. Thompson holds Maine electrician license MS60013358, which is active on the state registry. A 2026 Google reviewer said Gregory Thompson charged $110 to remove one battery from a smoke detector, which the reviewer timed at 3 minutes. That customer said he was supposed to give a free estimate on an electrical job. On Google, the business averages 2.5 stars from 2 ratings.
Gregory Thompson charged me $110.00 to remove 1 battery from my smoke detector! A total of 3 minutes. Forget about the other work I needed and wanted done. I can changed the battery of my smoke detector myself and have over $100.00 still in my pocket. He was supposed to give me a free estimate on an electrical job instead tells me I owe him $110.00 to remove the battery from the smoke detector less than 5 minutes max!
SCHOOL HOUSE - GOOD ICE CREAM. NICE PLACE TO VISIT.
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2 changes recorded — last scanned Oct 30, 2026.
Typical Maine range for this kind of work, from regional averages — not a quote from Gregory C Thompson & Sons. 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
$500 – $1,050
Typical electrical project around $780
26 years in businessNot yet rated
Electrical work suited to a historic home4.7
27 years in business3.5
Active Maine electrician licence, Thomas D. Mitchell2.8
