California Home Improvement Contract Requirements: BPC §7159 Rules

Under California Business and Professions Code section 7159, any home improvement contract worth more than $500 must be in writing and include specific terms, notices, and disclosures before work begins. California home improvement contract requirements cap your down payment at $1,000 or 10 percent of the price (whichever is less), require a mechanics lien warning, and give you a written right to cancel after signing.¹ A contractor who leaves out any of these pieces can face license discipline, and the gaps give you leverage if the job goes sideways.

When These Requirements Apply

Section 7159 covers any residential project where the total price for labor and materials exceeds $500.¹ The threshold looks at the combined cost across all contracts for the same improvement, so a contractor cannot avoid the rules by splitting one job into smaller invoices.

“Home improvement” is broad. Kitchen remodels, room additions, roof replacements, fencing, driveway paving, swimming pools, and landscaping all qualify. The property can be a single-family house, a condo, or a unit in a multi-family building. If you rent and the work is being done inside your unit, the contract you sign is covered too.

One boundary worth knowing: California has a separate set of rules for smaller service and repair jobs in sections 7159.10 through 7159.14. If a contractor is performing routine service or repair work and complies with those provisions instead, section 7159 does not apply. Anything larger that crosses the $500 line falls squarely under the requirements below.

What the Contract Must Contain

Section 7159(d) spells out the specific items that must appear in the written agreement. Every blank should be filled in before you sign; if a field does not apply, the contractor should write “N/A” rather than leave an open line for later additions.¹

The contractor’s name, business address, and Contractors State License Board (CSLB) license number.
The name and registration number of any home improvement salesperson who solicited or negotiated the deal.
A “Home Improvement” heading identifying the type of contract.
A separate heading stating the total contract price in dollars and cents.
A separate heading disclosing any finance charge, if the contractor is charging interest or arranging financing.
A description of the work and the significant materials and equipment to be used. “Kitchen remodel” alone is not enough; the contract should identify specific cabinet brands, countertop materials, and fixture types.
The approximate start date and the expected date of substantial completion.
A signed acknowledgment that you are entitled to a fully filled-in, signed copy of the contract before any work starts.

Down Payment and Progress Payment Limits

Your down payment is capped at $1,000 or 10 percent of the total contract price, whichever is less.¹ On a $25,000 kitchen remodel, the maximum up-front payment is $1,000. On a $6,000 bathroom renovation, the cap drops to $600. Any contractor demanding more than that before picking up a tool is breaking the law.

After the down payment, the contract must include a payment schedule tied to specific phases of work or delivery of materials. The statute is direct: it is illegal for a contractor to collect payment for work not yet performed or materials not yet delivered. Each progress payment must describe the type of work, the scope of that phase, and the dollar amount due when it is finished. Vague entries like “50% at midpoint” do not satisfy the rule. The schedule should point to concrete milestones such as completion of framing, rough plumbing, or electrical.

Required Notices in the Contract

Section 7159(e) requires several notices to appear in the contract itself or as attachments. These are not optional add-ons. Leaving any of them out is grounds for discipline.

Mechanics Lien Warning

The contract must include a Mechanics Lien Warning explaining how unpaid subcontractors and material suppliers can record a lien against your property even after you have paid the general contractor in full.¹ A valid mechanics lien can force you to pay twice for the same work or, in the worst case, lead to a forced sale of the property.

The warning must also cover preliminary notices, which subcontractors and suppliers send within 20 days of starting work or delivering materials. A preliminary notice is not a lien; it is a heads-up that the sender has the right to file one later if not paid. The statute recommends paying with joint checks made out to both the contractor and the subcontractor as one way to protect yourself, and California Civil Code sections 8132 through 8138 provide four standard lien waiver forms (conditional and unconditional, on progress and final payments) that you can request before releasing each check.²

Insurance Disclosures

The contractor must disclose in writing whether they carry commercial general liability insurance. If they do, the contract must list the insurer’s name and phone number so you can verify coverage directly.³ A separate notice covers workers’ compensation. If a contractor says they don’t need workers’ comp because they work alone, that may be accurate, but it still has to appear as a written disclosure rather than a verbal assurance.

Three-Day Right to Cancel

Most home improvement contracts must carry a “Three-Day Right to Cancel” notice letting you back out without penalty within three days of signing. For homeowners who are senior citizens, the window extends to five days.¹ If the work involves a home damaged by a declared emergency, the window stretches to seven days. These notices have to be printed in boldface type large enough that you cannot miss them.

If the applicable cancellation notice is missing, you can file a complaint with the CSLB. Its absence also means your cancellation clock may never have started, which can give you more time to rescind.

CSLB Contact Information

The contract must include information about the Contractors State License Board and how to reach it with a complaint. The CSLB is the agency with authority to discipline contractors, so having that contact information built into the document makes it easier to act if something goes wrong.

Getting Your Signed Copy Before Work Starts

Before any work begins or materials are delivered, the contractor must give you a fully signed and dated copy of the contract.¹ Your receipt of that copy is what starts the cancellation clock. If demolition begins Monday but the signed copy does not reach you until Wednesday, the three-day period does not start until Wednesday.

You will also sign the insurance and cancellation notices separately to confirm you have read them. Separate signatures on those pages make it harder for anyone to later claim you were not informed.

Change Orders for Extra Work

Surprises are almost guaranteed once demolition starts: hidden water damage, an electrical panel that needs upgrading, or a decision to switch tile selections mid-project. Any change from the original scope requires a written change order signed by both you and the contractor before the new work begins.¹

Each change order needs three things: the scope of the new or altered work, the dollar amount being added to or subtracted from the contract price, and the effect on the payment schedule or completion date. A change order missing any of those elements is not enforceable against you.⁴

This is where disputes flare up most often. Contractors sometimes perform extra work on a verbal understanding and then add it to the final bill. Without a signed change order, you have strong grounds to refuse payment for that work. The obligation runs both directions: you cannot demand extra work from the contractor without putting it in writing either.

What Happens If Your Contract Doesn’t Comply

Missing notices, incomplete disclosures, an oversized down payment demand, or unsigned change orders are all grounds for CSLB license discipline.¹ Discipline can range from fines to suspension or revocation of the license. If the cancellation notice was missing, you can file a complaint with the CSLB directly.

One nuance to understand: a contractor’s failure to comply does not automatically mean they forfeit all payment for work actually performed. The statute notes that non-compliance does not block a contractor from seeking compensation through legal or equitable claims meant to prevent you from getting a windfall of free work. In practice, contract defects weaken the contractor’s position substantially and give you real leverage in a dispute. They are not a blanket excuse to avoid paying for legitimate work already done.

Verify the License Before You Sign

The contract must include the contractor’s CSLB license number, and you should confirm it before signing. The CSLB runs a free online lookup where you can search by license number, business name, or the contractor’s personal name.⁵ The search will show whether the license is active, what classifications it covers, whether the contractor carries workers’ compensation, and whether any complaints or disciplinary actions are on file.

A few practical tips: California license numbers are all numeric and no longer than eight digits. When searching by business name, start with the first 10 to 15 characters. If the name begins with “The” or “A,” try the search with and without that word. The database goes offline Sunday evenings through early Monday morning for maintenance.

One thing your contract does not settle: building permits. Many projects require a permit from your local building department, and the permit follows the property rather than the contractor, so you carry the consequences of unpermitted work when you later sell, refinance, or file an insurance claim.⁶ If your contractor tells you a project does not need a permit, call the local building department to confirm that yourself.

1
California Legislative Information. California Business and Professions Code 7159
2
Contractors State License Board. Conditional and Unconditional Waiver and Release Forms
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Contractors State License Board. Home Improvement Insurance Disclosure Requirements
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California Legislative Information. California Business and Professions Code BPC 7159.6
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Contractors State License Board. Check A License
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Contractors State License Board. Do I Need a Building Permit for My Project?