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Groundworks

Registered with Washington L&I Active
GROUN**756KN · Plumbing Contractor · renews May 2027

From the state register, October 17, 2026. Confirm on L&I, which also shows their bond and insurance.

(253) 553-3529Phone on their state registration Reviews on GoogleOpens Google Maps
Journey levelSpecialty on the register

Before you hire them

1Check the name on your estimate matches Groundworks and registration GROUN**756KN.
2Ask whether the job needs a permit, and who pulls it.
3Get a written estimate first. No big cash deposits.
Ask this pro to call me

Free. Goes to one pro registered with Washington L&I.

Referral service, not a contractor. Privacy.

"Get a pro to call me" goes to Groundworks if they can take it; if not, to one other registered plumber near Seattle.

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