Washington contractor
WILLIAM LEONARD LLC
Registered in Washington for 4 years
- License number
- WILLILL790P9
- UBI
- 602455125
- Trade
- Plumbing(all plumbing contractors in Washington)
- L&I license type and specialty
- PLUMBING CONTRACTOR · JOURNEY LEVEL
- City
- SEATTLE, WA(all contractors in Seattle)
- Phone
- (206) 850-7524
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
- February 15, 2022
- Expiration date
- February 15, 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, 602455125. 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.
- WILLIAM LEONARD LLCRE-LICENSED
License WILLILL951B1 · CONSTRUCTION CONTRACTOR · January 21, 2005 to January 21, 2021
L&I describes this status as "relicensed under another name, structure, or specialty." Relicensing is common: a business is given a new license number when it changes its legal structure, name, or specialty.
Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.
Bond
Current bond
- Bond company
- Lexon Ins Co
- Bond number
- 9834119
- Amount
- $6,000
- Effective date
- December 10, 2021
- Expiration date
- Until canceled
Source: L&I Contractor License Data - Bond, Washington State Department of Labor & Industries. Last synced October 9, 2026.
Liability insurance
Current policy
- Carrier
- Federated Mutual Ins Co
- Policy number
- 6048473
- Coverage amount
- $1,000,000
- Effective date
- August 8, 2022
- Expiration date
- August 8, 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.
- Leonard, William KeithSince October 25, 2021
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: WILLIAM LEONARD in SEATTLE. Complaints filed under another name or city are not included.
One other registered contractor shares this business name and city: WILLIAM LEONARD LLC (WILLILL951B1, RE-LICENSED). 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
- L&I Contractor License Data - General, Washington State Department of Labor & Industries
- L&I Contractor License Data - Bond, Washington State Department of Labor & Industries
- L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries
- L&I Contractor License - Principal Data, Washington State Department of Labor & Industries
- Attorney General Consumer Complaints, Washington State Attorney General's Office
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 WILLILL790P9).