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California contractor license
Ehret Co Plumbing
Ehret Co Plumbing of Oakland holds California license 834005 (B General Building, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C36 Plumbing, C42 Sanitation System). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Mar 31, 2028.
Doing business as Renderos Jaime D Inc.
Licensed 22 years, longer than 70% of 65 active Oakland plumbing contractors.
Active
Ehret Co Plumbing, Oakland
- License
- 834005
- Class
- B General Building; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing; C42 Sanitation System
- Expires
- Mar 31, 2028
- Bond
- $25,000
- Workers' comp
- Insured to Aug 27, 2027
CSLB file dated Oct 30, 2026
From the CSLB file dated Oct 30, 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 Oct 30, 2026. Confirm with the board: CSLB license check
What bond, insurance and workers' comp are on file?
- Bond
- $25,000Western Surety Company, from Oct 28, 2025, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredSecurity National Insurance Company, from Aug 27, 2026, to Aug 27, 2027
Who is on this license?
- Officer
- Clifford BermodesSince Mar 15, 2004
- Officer
- Jaquelynn E. RenderosSince Dec 8, 2020
- Responsible managing officer, CEO and president
- Jaime D. RenderosSince Mar 15, 2004
What work does this license cover?
Issued Mar 15, 2004.
- B General Building
- C20 Warm-Air Heating, Ventilating and Air-Conditioning
- C36 Plumbing
- C42 Sanitation System
Which other Oakland businesses hold B General Building?
- Pena's Construction IncLicensed since 2003
- Bay Building Structures IncLicensed since 2004
- Quantum Energy Services & Technologies IncLicensed since 2004
- Oak Park ConstructionLicensed since 2004
- Allen Construction Expeditors IncLicensed since 2004
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. 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, Oct 30, 2026)
- Contractors State License Board (CSLB)