Mercer Development Services
General · Black Diamond, WA · License #MERCEDS887OE
Registration expired per WA L&I as of Sep 11, 2026.
Mercer Development Services is one of 122 General contractors registered in Black Diamond, registered with WA L&I since 2012. Registered longer than roughly 75% of General contractors in Black Diamond. Principals on record since 2012.
How confident can you be in Mercer Development Services?
Are they licensed, bonded, and insured?
Registration expired per WA L&I as of Sep 11, 2026.
Are they who they say they are?
Not yet verified — Mercer Development Services 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 Black Diamond.
Do they have jobs on record?
Not yet measured — Mercer Development Services 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
- Sep 5, 2012
- Expiration date
- Sep 11, 2026
- UBI
- 600496367
- Business type
- Individual
- Phone
- (253) 797-0547
- Location
- Black Diamond, WA 98010
Source: WA L&I contractor registration — checked Sep 28, 2026. Applies to every row above.
Registration lapsed Sep 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
Registration as a general contractor in Washington requires a $30,000 surety bond on file with the Department of Labor & Industries.
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 |
|---|---|
| Richard Aaron Mercer Jr | Sep 5, 2012 |
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. A $30,000 surety bond and general liability insurance, filed with WA L&I, are required for this registration. Washington currently lists 122 General contractors registered in Black Diamond.
Looking for reviews of Mercer Development Services?
Subser doesn't have reviews or star ratings. This page shows Mercer Development Services'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 Sep 28, 2026. Subser doesn't do star ratings or reviews — just verified records.