Keystone Maintenance Company
General · Bothell, WA · License #KEYSTMC802MN
Registration expired per WA L&I as of Jul 15, 2026.
Keystone Maintenance Company is one of 1,226 General contractors registered in Bothell, registered with WA L&I since 2020. Registered longer than roughly half of General contractors in Bothell. Principals on record since 2020.
How confident can you be in Keystone Maintenance Company?
Are they licensed, bonded, and insured?
Registration expired per WA L&I as of Jul 15, 2026.
Are they who they say they are?
Not yet verified — Keystone Maintenance Company 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 Bothell.
Do they have jobs on record?
Not yet measured — Keystone Maintenance Company 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
- Jul 15, 2020
- Expiration date
- Jul 15, 2026
- Suspend date
- Jun 7, 2026
- UBI
- 604400474
- Business type
- Corporation
- Phone
- (206) 437-5662
- Location
- Bothell, WA 98041
Source: WA L&I contractor registration — checked Nov 11, 2026. Applies to every row above.
Registration lapsed Jul 2026 per WA L&I records.
Is this your business? Claim it free to verify ownership — takes about two minutes.
Claim this free listingBond & 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
| Name | Start date |
|---|---|
| Mark James Parish | Jul 15, 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 1,226 General contractors registered in Bothell.
Looking for reviews of Keystone Maintenance Company?
Subser doesn't have reviews or star ratings. This page shows Keystone Maintenance Company's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
Own Keystone Maintenance Company? Claim the listing free. Worked with Keystone Maintenance Company? Endorse them from your own listing.
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Built from Washington State L&I public records, updated Nov 11, 2026. Subser doesn't do star ratings or reviews — just verified records.