Washington’s contractor deposit law does not set a maximum. No provision in the state’s contractor registration statute (RCW Chapter 18.27) caps how much a contractor can ask for up front, whether as a percentage or a dollar figure. Your protection comes instead from four things working together: mandatory contractor registration, the surety bond every registered contractor must post, a required written disclosure, and the payment terms you negotiate into your own contract.
How Much Deposit Is Reasonable
Because the statute is silent, your written contract is the only document controlling how much you pay and when. Industry practice generally puts the initial deposit somewhere between 10% and 33% of the contract price, with the balance tied to completion milestones. You are not legally required to agree to any particular figure, so treat the deposit as negotiable and match it to the work schedule.
A contractor who wants 50% up front on a large project and offers no reason beyond “that’s how we do it” is worth pushing back on. Some states cap contractor deposits at 10% or a fixed dollar amount. Washington is not one of them, which means the discipline has to come from you and the contract you sign.
Verify Registration and the Bond Before You Pay Anything
Every contractor working in Washington must register with the Department of Labor & Industries before advertising, bidding, or performing any construction work.1Washington State Department of Labor & Industries. Register as a Contractor Registration requires the contractor to post a surety bond and carry general liability insurance. A general contractor must post a $30,000 bond; a specialty contractor (roofer, painter, electrician, or similar trade) must post $15,000.2Washington State Legislature. Washington Code 18.27.040 – Bond or Other Security Required, Actions Against Bond
Before you sign anything or write a deposit check, run the contractor through L&I’s free online lookup to confirm registration, bond, and insurance are all active.3Washington State Department of Labor & Industries. Hiring a Contractor A contractor who can’t pass that check has no business asking you for money.
The Notice to Customer Disclosure
Before starting any residential project of $1,000 or more that involves four or fewer housing units, a contractor must give you a signed document called the “Notice to Customer.” The same requirement applies to commercial projects priced between $1,000 and $60,000.4Washington State Legislature. RCW 18.27.114 – Disclosure Statement Required, Prerequisite to Lien
The disclosure has to include the contractor’s registration number, bond amount, and registration expiration date. It also has to warn you, in plain language, that the bond covers all of the contractor’s customers rather than just you and may not be enough to cover your full claim. It tells you that you have the right to withhold retainage from each payment until the job is done. And it explains that if the contractor doesn’t pay their subcontractors or suppliers, those parties can lien your property and force you to pay twice for the same work — along with your right to demand original lien release documents from every subcontractor and supplier on the project.
You sign to acknowledge receipt, and the contractor must keep a copy for at least three years.5Washington State Department of Labor and Industries. Disclosure Statement Notice to Customers The disclosure isn’t just paperwork. A contractor who fails to provide it loses the right to lien your property for that project, an enforcement mechanism written directly into the statute.4Washington State Legislature. RCW 18.27.114 – Disclosure Statement Required, Prerequisite to Lien
Use Retainage to Balance a Large Deposit
Retainage is the practice of holding back a percentage of each payment until the contractor finishes the work to your satisfaction. Washington law does not mandate a specific retainage percentage on residential contracts, but the disclosure statement explicitly tells you that you can negotiate one. In construction practice, retainage typically runs between 5% and 10% of the contract price.
Retainage is the single best tool for keeping a contractor motivated through the end of a project. Once the punch-list items are complete and the work meets specifications, you release the retained funds. If you’re paying a sizable deposit, building retainage into the back end of your payment schedule offsets some of that front-end risk.
What the Surety Bond Actually Covers
The contractor’s surety bond exists to protect you. It is not insurance for the contractor. If a contractor takes your deposit and abandons the project, performs negligent work, or fails to pay subcontractors, you can sue both the contractor and the bond to recover your losses.2Washington State Legislature. Washington Code 18.27.040 – Bond or Other Security Required, Actions Against Bond
Read the disclosure’s warning carefully, because it matters: the bond covers every customer, subcontractor, supplier, and taxing authority with a valid claim against that contractor, not just you. A $30,000 bond on a $150,000 kitchen remodel will not make you whole if the contractor defaults and other claimants are already in line. On larger projects, ask the contractor to obtain a separate performance bond for the full contract amount, which guarantees project completion regardless of the general registration bond.6Washington State Department of Labor & Industries. About Liens
Deadline to File a Bond Claim
Homeowners have two years from the date the work was substantially completed or abandoned, whichever came first, to file a bond claim. Subcontractors, suppliers, and taxing authorities get only one year.2Washington State Legislature. Washington Code 18.27.040 – Bond or Other Security Required, Actions Against Bond A bond claim is a lawsuit filed in superior court, not a complaint form. Miss the two-year window and you lose access to the bond entirely.
Protecting Yourself From Subcontractor Liens
Even if you pay your contractor in full and on time, subcontractors and material suppliers who weren’t paid can lien your home to force payment. This is the pay-twice scenario the disclosure warns about, and it catches homeowners off guard more than almost anything else in residential construction.
Three practical tools cut that risk:
- Request signed lien releases from every subcontractor and supplier before each progress payment, and especially before the final payment.6Washington State Department of Labor & Industries. About Liens
- Make progress payments jointly payable to the contractor and the subcontractor or supplier. Once the subcontractor accepts a joint check, their lien rights for that payment are resolved.
- Don’t pay ahead of the work. Tie every payment to a verified milestone, and if a subcontractor sends a notice of intent to lien, stop paying the general contractor until the issue is resolved.
If the Contractor Turns Out to Be Unregistered
Hiring an unregistered contractor is risky, but the law actually gives the homeowner leverage in that situation. An unregistered contractor cannot sue to collect payment and cannot place a lien on your property. The courts will not hear their collection case unless they prove they held valid registration when the contract was signed.7Washington State Legislature. Washington Code 18.27.080 – Registration Required to Maintain Court Action
Working without registration is also a gross misdemeanor for the contractor.8Washington State Legislature. RCW 18.27.020 – Registration Required, Prohibited Acts, Criminal Penalties Hiring one knowingly doesn’t expose you to criminal liability, but it strips away every protection registration provides: no bond to claim against, no insurance behind the work, and often no realistic recourse if the job goes sideways. That’s why verifying registration before you write the deposit check is the one step that cannot be skipped.
If a contractor works without valid registration, fails to provide the mandatory disclosure, or commits other violations, report them to L&I.9Washington State Department of Labor & Industries. Problems With a Contractor An L&I complaint and a bond claim lawsuit are separate processes; you do not have to file one before pursuing the other.