ContractorHistory

Washington contractor

WILLIAMSON LANDSCAPE ARCH LLC

Registered in Washington for 31 years

License number
WILLILA055LO
UBI
601598364
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) 784-7996

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
June 20, 1995
Expiration date
March 23, 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, 601598364. 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
    Western Surety Co
    Bond number
    64955709
    Amount
    $30,000
    Effective date
    March 23, 2025
    Expiration date
    Until canceled

Bond history

  • Bond company
    Western Surety Co
    Bond number
    64955709
    Amount
    $12,000
    Effective date
    March 3, 2020
    Expiration date
    September 18, 2025

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

Liability insurance

Current policy

  • Carrier
    Ohio Cas Ins Co
    Policy number
    BLS(27) 58967713
    Coverage amount
    $1,000,000
    Effective date
    March 23, 2026
    Expiration date
    March 23, 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.

  • WILLIAMSON, SANDRA APRILSince January 1, 1980
  • WILLIAMSON, WILLIAM KEITHSince January 1, 1980
  • GARY JOHN KROHNSince March 22, 2011

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: WILLIAMSON LANDSCAPE ARCH in SEATTLE. Complaints filed under another name or city are not included.

One other registered contractor shares this business name and city: WILLIAMSON LANDSCAPE ARCH LLC (WILLILA996RU, 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 WILLILA055LO).