Washington: no hard cap, but real advice
Washington does not set a statutory ceiling on a bathroom remodel deposit, but state guidance is direct: pay as phases of the work finish, not on a calendar, and hold off on paying in full until the job is done.[1]
On a project over 6,000 dollars, that same guidance suggests asking the contractor to post a performance bond of their own.[1]
A separate disclosure statement is required on any job of 1,000 dollars or more at a home of four units or fewer, spelling out the registration number and bond.[2]
California: a number in the statute
California sets an actual ceiling: a down payment cannot exceed 10 percent of the contract price or 1,000 dollars, whichever figure is smaller. The one exception is a contractor who has filed a specific bond, a Blanket Performance and Payment Bond, directly with CSLB.[3]
Any home improvement job over 500 dollars combined for labor and materials needs a written contract in the first place, and every later change has to be documented in writing too.[3]
Florida: the deposit is tied to the permit clock
Florida does not cap the deposit amount directly. Instead, it regulates the aftermath: once a first payment climbs past 10 percent of the price, a clock starts, 30 days to apply for the permit, 90 days to begin work once the permit is issued.[4]
Why the approaches differ so much
California controls the deposit directly with a dollar figure. Florida lets a bigger deposit happen but attaches a deadline to it. Washington skips a hard number in favor of a phased-payment norm and a disclosure requirement instead.
If a contractor pushes past the rule
A California contractor who asks for more than that 10-percent-or-1,000-dollar figure, and who cannot point to that specific bond filing, is asking for something state law simply does not allow.[3]
The rest of the payment schedule, not just the deposit
None of the three states stops at regulating the first check. Washington's phased-payment norm, California's written-change-order rule, and Florida's permit-timing clock all keep applying for as long as the job runs.[1],[3],[4]
What to put in writing before the first payment
A schedule tied to finished phases, not calendar dates, protects you in all three states even where it is only a recommendation rather than a hard rule. Get it written into the contract either way.[1]