Groundworks

Plumbing Contractor in Seattle, Washington

Licensed, bonded & insuredBond $6,000Insurance $1,000,000

Call (253) 553-3529 Send a message Map ↗

Public-record details

Address: 18923 16th Ave S, Seattle, WA 98188
Phone: (253) 553-3529
Trade: Plumbing contractors
L&I licence number: GROUN**756KN
Licence type: Plumbing Contractor
Specialty: Journey Level
Status: Active
Business type: Limited Liability Company
UBI number: 605 565 510
Primary principal: Matthew Eric Malone
Registration effective: May 15, 2025
Registration expires: May 15, 2027
Bond on file: $6,000 (Atlantic Specialty Insurance Company)
Bond effective: April 23, 2025
Bond expires: Until canceled
Liability insurance on file: $1,000,000 (Old Republic Ins Co)
Insurance expires: December 1, 2026

Washington L&I licence GROUN**756KN: active, expires May 15, 2027; bond and liability insurance on file (checked 2026-09-30). Source: Washington L&I contractor registration, bond and insurance files (record). Data as of 2026-09-30.

Data comes from Washington L&I's public contractor, bond and insurance files. Before hiring, re-check the licence at secure.lni.wa.gov/verify (it also shows violations and lawsuits) and ask for the written disclosure statement. Planning an ADU in Seattle or Bellevue? See ADU Builder Index.

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