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Typical Greater Boston range for this kind of work, from regional averages — not a quote from William Sinclair 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
William Sinclair Electric has been doing business in Plymouth for close to four decades — the Better Business Bureau lists the company as a 38-year-old Massachusetts corporation at 180 South Meadow Road, run by its president, William Sinclair. Its listed services cover commercial, residential and light industrial electrical work, along with telecommunications and data network electrical work. William Sinclair personally holds an active Massachusetts electrician license, #18210. BuildZoom shows 85 building permits tied to the business, putting its BuildZoom score at 96 — the 80th percentile among the contractors it tracks. The Better Business Bureau gives the company an A+ grade, though it is not BBB-accredited. BuildZoom also lists a Massachusetts home improvement contractor registration, #192836, for William Sinclair Electric — a different license number than the electrician license above, worth confirming directly with the state registry before booking residential work. BuildZoom shows the company's town as Dennis Port, while the Better Business Bureau lists the same address and phone number under Plymouth; worth clarifying which is current. For commercial, residential or light-industrial electrical work in the Plymouth area, this is a long-established, licensed company — confirm the project scope, current licensing for the specific work involved, and insurance coverage before signing on.
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1 change recorded — last scanned Sep 19, 2026.
200-400 amp panel upgrades5.0
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