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Washington contractor license
Diamond Construction LLC
Diamond Construction LLC of Maple Valley holds Washington license DIAMOCL785O2 (CC-01 General). The L&I file dated Nov 1, 2026 lists it as active.1 It expires Sep 22, 2028.
Active
Diamond Construction LLC, Maple Valley
- License
- DIAMOCL785O2
- Class
- CC-01 General
- Expires
- Sep 22, 2028
- Bond
- $30,000
- Liability insurance
- $1,000,000 to Sep 21, 2027
L&I file dated Nov 1, 2026
From the L&I file dated Nov 1, 2026. Not a consumer report; check the board before you hire.
Has the board taken action on this license?
None in the L&I file dated Nov 1, 2026. Confirm with the board: L&I contractor lookup
What bond, insurance and workers' comp are on file?
- Bond
- $30,000Western Surety Co, from Sep 22, 2024, continuous
- Liability insurance
- $1,000,000Kinsale Insurance Company, from Sep 21, 2026, to Sep 21, 2027
- Workers' comp
- Not in the L&I fileCheck with the board
What work does this license cover?
License level: Construction Contractor. Issued Sep 22, 2022.
What other licenses does this business hold?
- Diamond Construction LLCDIAMOCL821R6 · CC-01 · Expired
Which other Maple Valley businesses hold CC-01 General?
- BM Cabinetry & Closet LLCLicensed since 2022
- Ryterra LLCLicensed since 2022
- Rain City Landscaping LLCLicensed since 2022
- Ibex Construction LLCLicensed since 2022
- Recon 3-21 LLCLicensed since 2022
General Contractors in Maple ValleyWashington general contractors
What should you check before hiring?
What to ask before you hire
- Get the license number in writing. The name on the license should match the name on your contract and invoice.
- Check the class covers the job. A license for one trade doesn't cover another. Washington license classes
- Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
- Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. The L&I file doesn't record workers' comp, so ask for the certificate.
- Put it in a written contract: license number, price, start date and payment schedule. Check the license again on the day you sign.
If the license is lapsed
- Don't sign or pay a deposit until the L&I shows the license active again.
- Ask the contractor why. For a bond or insurance lapse, ask for proof that the new bond or policy was filed with the L&I, then check again.
- If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Department of Labor and Industries (L&I).
- Check another contractor. Washington license lookup
Sources
- L&I contractor license data (data.wa.gov, Nov 1, 2026)
- Department of Labor and Industries (L&I)