Sos Computer Systems

General · Renton, WA · License #SOSCOCS809PO

Registration expired per WA L&I as of Oct 8, 2024.

What do these mean?

Sos Computer Systems is one of 1,835 General contractors registered in Renton, registered with WA L&I since 2020. Registered longer than roughly half of General contractors in Renton. Principals on record since 2020.

How confident can you be in Sos Computer Systems?

Are they licensed, bonded, and insured?

Registration expired per WA L&I as of Oct 8, 2024.

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

Are they who they say they are?

Not yet verified — Sos Computer Systems 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 Renton.

Do they have jobs on record?

Not yet measured — Sos Computer Systems 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
Oct 8, 2020
Expiration date
Oct 8, 2024
Suspend date
Aug 26, 2024
UBI
604598173
Business type
Individual
Phone
(206) 539-7761
Location
Renton, WA 98057

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

Registration lapsed Oct 2024 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
Cezar KlentakSep 18, 2020
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 1,835 General contractors registered in Renton.

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

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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.