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Cornerstone Plumbing LLC

Registered with Washington L&I Active
CORNEPL798NZ · Plumbing Contractor · renews August 2027

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

(509) 979-0185Phone 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 Cornerstone Plumbing LLC and registration CORNEPL798NZ.
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 Cornerstone Plumbing LLC if they can take it; if not, to one other registered plumber near Spokane Valley.

Other registered plumbers in Spokane Valley

Vertical Plumbing IncVERTIPI771JEKP Plumbing & Mechanical LLCKPPLUPM780D3Blue Skies Plumbing LLCBLUESSP742JAT & C PlumbingTCPLUCP771D3Pump DivisionPUMPDD*771BTPremium Plumbing LLCPREMIPL744O1

All plumbers in Spokane Valley

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