California Business and Professions Code §7159: contractor guide

What §7159 does

Read broadly, §7159 answers two questions: does this home-improvement contract framework apply to the job, and what has to happen before and during the work if it does? For covered agreements above the $500 aggregate threshold, the answer looks at the full value of labor, services and materials, not one slice of the project.

Not every job runs on that track. A qualifying Service and Repair contract can fall under §§7159.10–7159.14 instead. Keep in mind, too, that §7159 isn't a stand-alone safe harbor, and other laws can still reach the same project.

Before work starts: writing, signatures and the customer copy

Timing matters here. The agreement needs to be written and signed before covered work begins, and the customer should already be holding a copy signed and dated by both of you when the job starts.

§7159 also requires some details on the first page, including the date the buyer signed and contact information used for cancellation. Those are exactly the items an older form tends to leave out.

Core information the contract must organize

Getting the content right is only half of it. The statute also speaks to presentation and delivery: headings, type size, signatures, notices and attachments. When in doubt, check the code section itself rather than working from memory.

Down payments and progress payments

• Collecting a down payment? Compare $1,000 with 10% of the contract price. Under the general rule, whichever is smaller sets the ceiling, unless a statutory exception actually applies to the deal.
• Think of the progress schedule as a map of the job, where each installment points to the stage it pays for and the work, services or materials tied to that stage.
• Beyond the allowed down payment and any exception that applies, payments generally trail performance. Money shouldn't get ahead of work completed or materials delivered.

More detail: down payment limit · progress payments

Change orders are part of the contract workflow

A change order amends the project. It isn't a note in a text thread. It should be in writing and signed by both sides before the changed work begins.

A good change order makes the consequences visible. What's different about the scope? How much does the price go up or down? Does the payment plan shift, or the completion date? Separately, §7159 requires buyer-facing change-order information in the original contract itself.

Read the change orders guide →

Notices and disclosures §7159 puts into the contract

• ✓Commercial general liability insurance notice
• ✓Workers' compensation insurance notice
• ✓How extra work and change orders are handled
• ✓Mechanics-lien warning
• ✓CSLB notice and information
• ✓Cancellation paperwork that applies to the transaction
• ✓Performance and payment bond information when relevant
• ✓Whether subcontractors may be used
• ✓Lien-release language connected to payment

Whether each item applies, and for some notices the exact wording, comes from the statute. We list the checkpoints here and leave the notice text to the code itself. More detail: mechanics lien warning · cancellation rights

Cancellation rights: use the rule that actually applies

• Covered transactions start from a three-day cancellation framework in §7159.
• When the buyer counts as a senior citizen under the statute, those references become five days and the fifth day.
• In certain other statutory circumstances, a seven-day framework referenced by §7159 takes over.
• Some contracts negotiated at the contractor's business location are handled differently.
• A job that qualifies as a Service and Repair contract under §§7159.10–7159.14 needs its own analysis; don't assume the ordinary §7159 cancellation structure carries over.

ContractBuilderAI can prompt a contractor to review cancellation questions, but it does not decide which cancellation statute governs a particular deal.

Read the cancellation rights guide →

A contractor workflow mapped to §7159

1. Classify the transaction before choosing the contract path.
2. Enter contractor, buyer and property details.
3. Write the scope and identify key materials and equipment.
4. Set price, expected start and completion dates.
5. Build the down-payment and progress-payment structure.
6. Add the notices and disclosures required for this transaction.
7. Review the whole agreement for consistency before signature.
8. Deliver the signed buyer copy before the covered work begins.
9. Document later changes with signed change orders.
10. Keep the signed contract and change history together.

Treat the list as a working order of operations for your office. Following it doesn't amount to a legal finding that a given contract meets every rule that applies.

How ContractBuilderAI fits

• Guided project setup
• Draft assistance for scope and materials
• Payment-stage planning
• Contract review checkpoints
• Electronic signatures
• Contract activity record
• Project-linked change orders

ContractBuilderAI helps organize these steps. The contractor still controls the final agreement and is responsible for confirming what the project requires.

See California contract software →Apply for the California beta →

Related California contractor guides

For a closer look at coverage, read When California B&P §7159 applies: contractor guide.

Primary sources

• California Legislature — Business and Professions Code §7159
• Contractors State License Board — What Is a Home Improvement Contract?
• Contractors State License Board — Contracts and Binding Agreements

Building California contracts should not start from a blank page.

ContractBuilderAI is opening a California private beta on November 1, 2026 for licensed home improvement contractors.