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When does a California contractor need a license?

Source: California HVAC Help (californiahvachelp.com), part of the Local Help Stations network (localhelpstations.com). Last updated November 2, 2026.

Heating and air conditioning contractors are licensed by CSLB in the C-20 Warm-Air Heating, Ventilating and Air-Conditioning classification. A C-20 contractor installs, maintains, services and repairs warm-air heating systems, water heating heat pumps, ventilating systems and air conditioning systems with their ducts and controls. (source: Contractors State License Board)

The contractor license law does not apply to work under $1,000 in total (labor, materials and everything else) that is casual, minor or inconsequential and does not need a building permit. The exemption is lost if the job is split up to get under $1,000, if the person advertises as a contractor, or if they employ anyone to help (B&P 7048). AB 2622, approved in September 2024, raised this limit from $500 to $1,000, and the section was amended again effective January 1, 2026. (source: California Legislature) (source: California Legislature)

Penalties

Contracting without a license is a misdemeanor. A first conviction can bring a fine up to $5,000, up to six months in county jail, or both. A second conviction brings a fine of the greater of $5,000 or 20 percent of the contract price, and at least 90 days in jail in most cases. Charges must be filed within four years (B&P 7028). (source: California Legislature)

On this site: Do I need a permit to replace an AC or furnace in California? · California energy code testing for AC changeouts · Mini-split permits in California · HVAC permit costs in California cities · HVAC work that needs no permit in California cities · Can I do my own HVAC work in California? · When does a California contractor need a license? · California home improvement contract and payment rules · How to check a California contractor and complain · Cities · FAQ · Sources

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