Cornerstone Plumbing & Sply CO

General · Tacoma, WA · License #CORNEPS131C3

Registration expired per WA L&I as of Feb 17, 2022.

What do these mean?

Cornerstone Plumbing & Sply CO is one of 3,415 General contractors registered in Tacoma, registered with WA L&I since 1987. Registered longer than roughly 75% of General contractors in Tacoma. Principals on record since 1980.

How confident can you be in Cornerstone Plumbing & Sply CO?

Are they licensed, bonded, and insured?

Registration expired per WA L&I as of Feb 17, 2022.

Source:License facts on this pageVerify at WA L&I

Are they who they say they are?

Not yet verified — Cornerstone Plumbing & Sply CO hasn't claimed this listing. Own this business? Claim it free.

Do other pros stand behind them?

No endorsements yet from other licensed contractors in Tacoma.

Do they have jobs on record?

Not yet measured — Cornerstone Plumbing & Sply CO hasn't run jobs through Subser. Performance data comes from real jobs, not reviews.

Subser doesn't do star ratings or reviews — just verified records. What do these mean?

License facts

License type
CONSTRUCTION CONTRACTOR
Effective date
Feb 23, 1987
Expiration date
Feb 17, 2022
Suspend date
Sep 8, 2021
UBI
601002828
Business type
Individual
Phone
(253) 537-3747
Location
Tacoma, WA 98446

Source: WA L&I contractor registration — checked Nov 10, 2026. Applies to every row above.

Registration lapsed Feb 2022 per WA L&I records.

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Bond & insurance on file

What the bond and insurance requirements mean for homeowners

A $30,000 surety bond, filed with the Department of Labor & Industries, is a condition of registration for every general contractor in Washington.

The bond is a limited fund a homeowner (or subcontractor or supplier) can make a claim against, through the courts, if a registered contractor fails to meet its obligations on a job. Contractors must also keep general liability insurance on file — at least $50,000 in property damage and $200,000 in public liability coverage, or a $250,000 combined single limit — which covers damage the contractor causes, not workmanship disputes. The rows above are the bond and insurance filings L&I publishes for this registration; whether a specific filing applies to a specific project depends on its dates and terms.

Principals

NameStart date
Kenneth Bruce SanfordJan 1, 1980
What is a General contractor licensed to do in Washington?

A general contractor in Washington is registered with the Department of Labor & Industries to perform or oversee work in multiple building trades. General contractors can take on whole projects — remodels, additions, new construction — and can hire specialty subcontractors for individual trades. Washington requires a $30,000 surety bond and general liability insurance for this registration. Washington currently lists 3,415 General contractors registered in Tacoma.

Looking for reviews of Cornerstone Plumbing & Sply CO?

Subser doesn't have reviews or star ratings. This page shows Cornerstone Plumbing & Sply CO's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.

Own Cornerstone Plumbing & Sply CO? Claim the listing free. Worked with Cornerstone Plumbing & Sply CO? Endorse them from your own listing.

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Built from Washington State L&I public records, updated Nov 10, 2026. Subser doesn't do star ratings or reviews — just verified records.