ContractorHistory

Washington contractor

UNITED SYSTEMS MECHANICAL LLC

Registered in Washington for 21 years

License number
UNITESM962QA
UBI
602439405
Trade
General contractor(all general contractor contractors in Washington)
L&I license type and specialty
CONSTRUCTION CONTRACTOR · GENERAL
City
SEATTLE, WA(all contractors in Seattle)
Phone
(206) 933-6036

Current verification

  • Found: Active Washington contractor registration
  • Found: Current bond record found
  • Found: Current liability insurance record found
  • Found: No Attorney General complaint records found
  • Review: 1 other license record under the same UBI

From the state records below; each section shows its source and when it was last synced.

Registration

Status
ACTIVE
Effective date
November 1, 2004
Expiration date
November 1, 2028

Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.

Related licenses

One other license number is registered under the same UBI, 602439405. A UBI identifies one business with the state; a business may hold more than one license, renew under a new number, or register a new license after an earlier one closed.

Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.

Bond

Current bond

  • Bond company
    Ohio Cas Ins Co
    Bond number
    999360658
    Amount
    $30,000
    Effective date
    November 1, 2024
    Expiration date
    Until canceled

Bond history

  • Bond company
    American States Insurance Co
    Bond number
    32s205383
    Amount
    $12,000
    Effective date
    April 20, 2012
    Expiration date
    Not on record
    Cancellation date
    November 1, 2024

Source: L&I Contractor License Data - Bond, Washington State Department of Labor & Industries. Last synced October 9, 2026.

Liability insurance

Current policy

  • Carrier
    Middlesex Insurance Company
    Policy number
    A0182962004
    Coverage amount
    $1,000,000
    Effective date
    November 1, 2021
    Expiration date
    November 1, 2027

L&I publishes only the policy currently on file. Earlier policies are kept from our own nightly syncs, which began October 6, 2026.

Source: L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries. Last synced October 9, 2026.

People

Principals L&I lists for this license.

  • GANGNES, TYLER JEFFREYSince October 24, 2014
  • LAPHAM, JOHN GORDONSince October 24, 2014
  • SARGEANT, LESLIE ENovember 1, 2004 to October 8, 2018

Source: L&I Contractor License - Principal Data, Washington State Department of Labor & Industries. Last synced October 9, 2026.

Attorney General complaints

No Attorney General complaint records found.

Matched on business name and city: UNITED SYSTEMS MECHANICAL in SEATTLE. Complaints filed under another name or city are not included.

One other registered contractor shares this business name and city: UNITED SYSTEMS MECHANICAL LLC (UNITESM813QO, ACTIVE). Complaints are matched by business name and city, so any complaint records shown here also appear on those pages. The records do not say which of these contractors a complaint was about.

A complaint record does not establish that the business violated the law.

Source: Attorney General Consumer Complaints, Washington State Attorney General's Office. Last synced October 9, 2026.

Record history

Changes to this contractor's state records since we began tracking them. The state's current-status tools do not show these.

No changes recorded since our records began on October 6, 2026.

Sources

Record last synced October 7, 2026.

Check this record against the state directly on L&I's Verify a Contractor page (search by license number UNITESM962QA).