Skip to content
Nearby Plumber — nearbyplumber.com · License-verified plumbing directory · printed Oct 22, 2026
Plumbers › Washington › Spokane County › Cornerstone Plumbing LLC
Licensed Plumbing Contractor — Journey Level · Spokane Valley, WA

Cornerstone Plumbing LLC

✓ L&I Verified Spokane Valley, WA · Spokane County

Cornerstone Plumbing LLC, based in Spokane Valley, WA, holds L&I license CORNEPL798NZ (Plumbing Contractor — Journey Level), which read active when we checked it on Oct 21, 2026.

License
Plumbing Contractor — Journey Level
License status
● Active
Last checked
Oct 21, 2026

L&I license verification for Cornerstone Plumbing LLC

LicenseLicense numberStatus
Plumbing Contractor — Journey Level CORNEPL798NZ ● Active
Last checked against L&I records: Oct 21, 2026· Look up license CORNEPL798NZ on the L&I contractor verification ↗

What the L&I badge means

  • Their license number appears in the L&I record and reads active on the date shown.
  • The name and county we list match that record.
  • We re-check on a schedule and date-stamp every check.

What the badge does not mean

  • It is not a recommendation, an endorsement or a quality rating.
  • It does not confirm insurance, bonding or pricing.
  • It does not mean they are taking work right now.

Where Cornerstone Plumbing LLC is based

County of record on the L&I listing. That is where the business is filed, not where it works. The license is valid statewide.

Cornerstone Plumbing LLC reviews

No customer reviews of Cornerstone Plumbing LLC yet. We only publish reviews from confirmed customers after completed work, and we never import or synthesize them.

(509) 979-0185 Get 3 free quotes
Free plumber quotes

Get free plumber quotes in Spokane County.

This is not a private message to Cornerstone Plumbing LLC. Tell us once and we send it to up to 3 license-verified Spokane County plumbers — or call Cornerstone Plumbing LLC directly: (509) 979-0185. Free, no spam, delete your request anytime.

Plumbing Quote Request

Secure form. Sent over an encrypted connection to up to 3 license-verified plumbers. Never sold to data brokers, and you can have your request deleted anytime.