California
Cap$1,000 or 10% of the contract, whichever is less
For home improvement contracts: “the downpayment shall not exceed one thousand dollars ($1,000) or 10 percent of the contract amount, whichever amount is less.” After the down payment, the contractor may not ask for or accept payment “that exceeds the value of the work performed or material delivered”, and any payments before completion need a schedule in the contract, in dollars and cents.
The exception: a contractor who furnishes a performance and payment bond, a lien and completion bond, or a bond equivalent or joint control approved by the registrar is exempt from those payment limits.
Source: Cal. Bus. & Prof. Code § 7159.5(a)(3), (a)(5), (a)(8), read 3 October 2026