Best Licensed Electricians in Mercer Island, WA
6 electrical contractors registered in Mercer Island hold current L&I licenses, verified against official records as of August 23, 2026. All 6 are listed below, ordered by insurance status and bond amount.
- 1,061 active L&I electrical contractor licenses in King County; 6 registered in Mercer Island
- 44 of the county's active licenses have an insurance policy on file with L&I, which publishes one for 4.9% of them statewide
- 983 county licenses carry a contractor bond, median amount $4,000
- 77 county licenses reach their expiration date within 90 days
We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.
- ✓ L&I License #ACELEEL918PM - verify at state registryBonded - $4,000
- Verified
- August 23, 2026
- Expires
- 2026-11-19
- Phone
- (206) 818-9626
- ✓ L&I License #ECOELEP76575 - verify at state registryBonded - $4,000
- Verified
- August 23, 2026
- Expires
- 2028-10-25
- Phone
- (206) 458-7805
- ✓ L&I License #ISLANSS122QC - verify at state registryBonded - $4,000
- Verified
- August 23, 2026
- Expires
- 2027-06-27
- Phone
- (206) 232-0842
- ✓ L&I License #JHMARMC853KD - verify at state registryBonded - $4,000
- Verified
- August 23, 2026
- Expires
- 2027-06-04
- Phone
- (206) 601-5416
- ✓ L&I License #VOLTLL*753JP - verify at state registryBonded - $4,000
- Verified
- August 23, 2026
- Expires
- 2027-06-02
- Phone
- (206) 295-1525
- ✓ L&I License #WENZEEL938QF - verify at state registryBonded - $4,000
- Verified
- August 23, 2026
- Expires
- 2028-03-10
- Phone
- (206) 390-0569
Compare the top 6 at a glance
| Electrician | License | Insurance on file | Bond |
|---|---|---|---|
| Ac Electric LLC | #ACELEEL918PM | None on file | $4,000 |
| Eco Electric Plmbng Htng & Air | #ECOELEP76575 | None on file | $4,000 |
| Island Security Systems Inc. | #ISLANSS122QC | None on file | $4,000 |
| J&h Maritime Consulting LLC | #JHMARMC853KD | None on file | $4,000 |
| Voltline LLC | #VOLTLL*753JP | None on file | $4,000 |
| Wenzel Electric LLC | #WENZEEL938QF | None on file | $4,000 |
How this page is built
Nobody pays to appear on this page, and position cannot be bought. A company is listed only where the official register showed it holding a current license when we checked on August 23, 2026.
- Ranked by insurance status and bond amount.
- Left off anything expired on the date we checked, or carrying any status other than current.
- Not published at all until at least 3 electrical contractors pass that check. At most 10 appear - a cut through the ranking, not a further test.
The full method, including what each register does and does not publish.
King County electrical licensure at a glance
Washington publishes no county on a contractor record, so we attribute each registration to a county through the city it is registered in: 1,061 active L&I electrical contractor licenses sit in King County, 6 of them in Mercer Island. L&I's published insurance file lists a policy for 44 of them, and for 4.9% of active licenses statewide, so a blank there means unrecorded rather than uninsured, and 983 carry a contractor bond with a median amount of $4,000. 77 county licenses reach their expiration date within the next 90 days. Two limits of this source we will not paper over: L&I drops lapsed insurance policies from the file it publishes, so "no policy on file" is the honest signal here and a Texas-style expired-certificate statistic is not possible; and the registry's effective date resets at every renewal, so it is not an original licensure date and no "licensed since" claim is made for Washington. Check any record yourself at L&I's verify tool. How we verify.
Electricians in Mercer Island: common questions
How many licensed electrical contractors are registered in Mercer Island?
6 active L&I electrical contractor licenses are registered in Mercer Island, out of 1,061 across King County. 6 Mercer Island-registered companies passed our license verification, and all 6 are listed on this page. Only registrations L&I shows as ACTIVE are listed - suspended, inactive and expired ones never appear.
How do I check an electrical contractor's license in Washington?
Search the company name or license number in L&I's contractor verify tool at secure.lni.wa.gov/verify, which shows status, expiration, the insurance policy on file and the bond. We list only ACTIVE registrations, and every listing above carries its license number. 77 King County licenses reach their expiration date within 90 days.
What does the bond on a Washington contractor mean?
983 of King County's 1,061 active licenses have a contractor bond on file with L&I, median amount $4,000. A contractor bond is money a customer can claim against, and L&I's verify tool shows each contractor's current bond, its amount and the firm that issued it.