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California contractor license
Koch Specialty Plant Services LLC
Koch Specialty Plant Services LLC of Houston holds California license 1015436 (A General Engineering). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Jun 30, 2028.
Licensed 10 years, longer than 50% of 62,372 active California general contractors.
Active
- Workers' comp ends Dec 1, 2026 (30 days)
Koch Specialty Plant Services LLC, Houston
- License
- 1015436
- Class
- A General Engineering
- Expires
- Jun 30, 2028
- Bond
- $25,000
- Workers' comp
- Insured to Dec 1, 2026
CSLB file dated Nov 1, 2026
From the CSLB 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 CSLB file dated Nov 1, 2026. Confirm with the board: CSLB license check
What bond, insurance and workers' comp are on file?
- Bond
- $25,000Federal Insurance Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredOld Republic Insurance Company, from Dec 1, 2025, to Dec 1, 2026
Who is on this license?
- Responsible managing employee
- Wayne E. BumgarnerSince Oct 3, 2016
- LLC member
- Thomas J. ConcienneSince Nov 16, 2017
- LLC manager
- Robert J. GibsonSince Jun 23, 2016
What work does this license cover?
Issued Jun 23, 2016.
Where are other licensed California contractors listed?
What should you check before hiring?
What to ask before you hire
- Ask whether it has been renewed. Something on this license ends within 60 days. Check again before you pay a deposit.
- 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. California 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. An exemption on file means the contractor told the CSLB it has no employees.
- 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 CSLB 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 CSLB, then check again.
- If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
- Check another contractor. California license lookup
Sources
- CSLB License Master (cslb.ca.gov, Nov 1, 2026)
- Contractors State License Board (CSLB)