Verified record
Wilko Systems has been wiring homes around Malden since 1989, when Master Electrician Bill Kotowski started the company (then called Kotowski Electrical Services) before renaming it as it grew; its Massachusetts electrician license is active and verified. The reviews on file run from December 2023 to November 2025, and the pattern that repeats is people who came back and stayed: one customer wrote in early 2025 that they'd worked with Wilko for more than a decade, and another, the same month, called Bill and his crew the most reliable group they'd worked with across 'many different electrical issues and upgrades.' A mid-2025 review gets specific about one job — installing and wiring a kitchen exhaust fan, with the electrician discussing options and sticking to the original estimate before finishing what the customer called a 'splendid' installation. Scheduling and follow-through come up unprompted: reviewers describe being given a choice of appointment times, technicians who arrived when promised, and jobs explained clearly as they went. Nothing negative turns up anywhere in what customers have said. For electrical work in the Malden/Greater Boston area — panel upgrades, EV chargers, knob-and-tube remediation, or a routine repair — the reviews point to a shop that's been doing this a long time and keeps the same customers coming back; it's worth confirming current pricing and scheduling directly, since neither comes up in what's here.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Wilko Systems Inc. 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
Great efficient service with a smile. Wilko is willing to take some extra time to make sure all is working, and they even have a passing knowledge about appliance repair.
Our experience with Wilko Systems was entirely positive. They scheduled our appointments giving us some choices as to times. They arrived when they said they would, discussed the job (installing, wiring a kitchen exhaust fan), made suggestions and had a real dialogue about options. The estimate was in our ballpark. When they returned to do the job, the electrician respected our choices and did a splendid installation & wiring job. We will definitely call Wilko Systems for future electrical needs!
We have worked with Wilko Systems for more than a decade. The team is highly professional, responsive, friendly. Highly recommended.
Responsive, easy to schedule an appointment with and great service. Very professional.
Bill & His crew are the best! Most reliable and knowledgeable group I have ever worked with. They have helped me out on many different electrical issues and upgrades
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1 change recorded — last scanned Sep 5, 2026.
Same-visit fix2.9
Praised for a punctual heat pump install3.3
Generators, fire alarm and medium-voltage work3.1
Fast, fair pricing3.6