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California contractor license
Dunn Plumbing Heating & Air Conditioning Inc
Dunn Plumbing Heating & Air Conditioning Inc of Rancho Cucamonga holds California license 712182 (C20 Warm-Air Heating, Ventilating and Air-Conditioning, C36 Plumbing). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Aug 31, 2028.
Licensed 31 years, longer than 91% of 47 active Rancho Cucamonga plumbing contractors.
Active
Dunn Plumbing Heating & Air Conditioning Inc, Rancho Cucamonga
- License
- 712182
- Class
- C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
- Expires
- Aug 31, 2028
- Bond
- $25,000
- Workers' comp
- Insured to Jul 1, 2027
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
- $25,000American Contractors Indemnity Company, from May 31, 2025, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredContinental Casualty Company, from Jul 1, 2026, to Jul 1, 2027
Who is on this license?
- Officer
- Saundra J. DunnSince Aug 10, 2004
- Responsible managing officer, CEO and president
- Joshua D. DunnSince Aug 23, 2010
What work does this license cover?
Issued Sep 6, 1995. Inactive Sep 6, 1995 to May 18, 1998. Reissued Aug 10, 2004.
Which other Rancho Cucamonga businesses hold C20 Warm-Air Heating, Ventilating and Air-Conditioning?
- Ideal Comfort Heating & Cooling CorporationLicensed since 1983
- Sonwest Air Conditioning IncLicensed since 1986
- T D I RefrigerationLicensed since 1999
- Air Management Industries IncorporatedLicensed since 2000
- A + Air CorpLicensed since 2002
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, Nov 1, 2026)
- Contractors State License Board (CSLB)