California Home Improvement Contract Requirements: BPC §7159 Rules

Under California Business and Professions Code section 7159, any residential home improvement project priced above $500 must be covered by a written contract that includes a defined set of terms, disclosures, and notices before work begins. The California home improvement contract requirements cap your down payment, tie progress payments to specific milestones, give you a written right to cancel, and warn you about mechanics liens. A contractor who leaves any of this out can face discipline from the Contractors State License Board, and the gaps give you real leverage if a dispute develops later.¹

When the Written Contract Rule Applies

Section 7159 kicks in whenever the combined price of labor and materials for a residential improvement exceeds $500. The threshold looks at the project as a whole, so splitting a job across smaller invoices to stay under the line does not avoid the rule.¹

“Home improvement” is broad. Kitchen remodels, room additions, roof replacements, fences, driveways, pools, and landscaping all fall within it. The property can be a single-family house, a condo, or a unit in a multi-family building, and the rules reach tenant-commissioned work in a rented unit.

One boundary worth knowing: California treats smaller service and repair work under a separate scheme in sections 7159.10 through 7159.14. A contractor doing routine maintenance or minor repairs who complies with those sections is not governed by section 7159. Once a job crosses $500 and goes beyond basic service work, the full requirements apply.

What the Contract Must Contain

Section 7159(d) lists the specific items the written contract must include. Each one is independently required, and leaving one out exposes the contractor to CSLB discipline.

The contractor’s name, business address, and 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 agreement.
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. Generic language like “kitchen remodel” is not enough; the contract should identify specific items such as cabinet brands, countertop materials, and fixture types.
The approximate start date and the expected date of substantial completion.
A statement that you are entitled to a completely filled-in, signed copy of the contract before any work starts.

Every blank should be filled before you sign. If a field does not apply, the contractor should write “N/A” rather than leave empty space that someone could fill in later.

Down Payment and Progress Payment Rules

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. A contractor who asks for more before any work begins is breaking the law.

After the down payment, the contract must include a schedule that ties each payment to a specific phase of work or delivery of materials. The statute is direct about this: a contractor cannot collect for work not yet done or materials not yet delivered. Each payment entry should describe the work covered, the scope of that phase, and the dollar amount due when it is complete. Vague entries like “50% at midpoint” fall short. The schedule should point to concrete milestones such as completion of framing, rough plumbing, or electrical.

Required Notices and Disclosures

Section 7159(e) requires several standalone notices in the contract itself or attached to it. These are not optional, and the contractor needs your signature on the specific notices covering insurance and cancellation rights to confirm you read them.

Mechanics Lien Warning

The contract must include a Mechanics Lien Warning explaining that unpaid subcontractors and material suppliers can place a lien on your property even if you have paid the general contractor in full.¹ A mechanics lien operates like a mortgage claim recorded against your home. A valid lien can mean paying twice for the same work, or in the worst case, a forced sale of the property.

The warning also needs to explain 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 payment does not come through. The statute recommends joint checks made payable to both the general contractor and the subcontractor as one way to protect yourself.

Insurance Disclosures

The contractor must disclose in writing whether they carry commercial general liability insurance, and if so, the contract must include the carrier’s name and phone number so you can verify coverage directly.² A separate notice addresses workers’ compensation insurance. A contractor who says workers’ comp is not required because they work alone should still put that in writing, not just say it.

Right to Cancel

Most home improvement contracts must include a Three-Day Right to Cancel notice that lets you back out without penalty within three days of signing. For senior citizens, the window is five days. If the work involves a home damaged by a declared emergency, the window is seven days.¹ The notice must appear in boldface type large enough that you cannot miss it.

If the applicable cancellation notice is missing from your contract, you can file a complaint with the CSLB, and the absence of the notice may mean your cancellation clock never started running, which can extend the time you have to rescind.

CSLB Contact Information

The contract must include contact information for the Contractors State License Board. The CSLB is the agency with power to discipline contractors, and building its contact details into the agreement makes it easier for you to act if something goes wrong.

Getting a Signed Copy Before Work Starts

Before any work begins or materials are delivered, the contractor must hand you a fully signed and dated copy of the contract.¹ Delivery of that copy is what starts the clock on your right to cancel. If demolition begins Monday but you do not receive a signed copy until Wednesday, your three-day cancellation period runs from Wednesday.

You will sign the insurance and cancellation notices separately as well. Separate signatures on those notices make it harder for anyone to later claim you were not informed.

Change Orders and Extra Work

Projects run into surprises: hidden water damage behind a wall, an electrical panel that needs upgrading, a last-minute change to tile selection. Any deviation from the original scope requires a written change order signed by both you and the contractor before the new work starts.¹

Each change order needs three elements:

The scope of the new or changed work.
The dollar amount being added to or subtracted from the contract price.
How the change affects the progress payment schedule or completion date.

A change order missing any of these elements is not enforceable against you.³ This is where disputes most often arise. Contractors sometimes perform extra work on a verbal agreement and tack it onto the final bill. Without a signed change order, you have strong grounds to refuse that charge. The obligation runs both ways: you also cannot demand extra work from the contractor without putting it in writing.

What Happens If the Contractor Doesn’t Comply

A missing notice, an incomplete disclosure, an oversized down payment demand, an unsigned change order: any of these is grounds for CSLB discipline, which can range from fines to suspension or revocation of the license.¹ You can file a complaint directly with the board if you spot a violation.

There is an important limit on what non-compliance does for you. A contractor who fails to follow section 7159 does not automatically forfeit the right to be paid for work actually performed. The statute itself preserves the contractor’s ability to pursue legal or equitable claims that prevent you from receiving a windfall of free work. In practice, contract defects weaken the contractor’s position significantly in a dispute but do not erase the obligation to pay for legitimate work completed on your home.

Verifying the License Before You Sign

The contract must list the contractor’s CSLB license number, and you should verify it before signing. The CSLB runs a free online lookup that lets you search by license number, business name, or the contractor’s personal name.⁴ The results 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 search tips. California license numbers are numeric and no more than eight digits. When searching by business name, start with the first 10 to 15 characters. For names starting with “The” or “A,” try the search both with and without that word. The database goes offline Sunday evenings through early Monday morning for maintenance.

1
California Legislative Information. California Business and Professions Code 7159
2
Contractors State License Board. Home Improvement Insurance Disclosure Requirements
3
California Legislative Information. California Business and Professions Code BPC 7159.6
4
Contractors State License Board. Check A License