What Should Be in a Contractor Warranty and Contract in California?
A residential renovation contractor in Los Angeles should provide a minimum 1-year written warranty on workmanship, plus pass-through manufacturer warranties. California law also provides implied warranty protections — but a written warranty with explicit terms is always stronger.
Written Warranty: What to Look For
| Element | What It Should Say |
|---|---|
| Warranty period | Minimum 1 year from substantial completion; 2 years is better |
| What's covered | Defects in workmanship — cracks, leaks, failures, separations |
| What's excluded | Owner-caused damage, normal wear and tear, acts of nature |
| How to make a claim | Written notice to contractor within warranty period |
| Response time | Contractor responds and repairs within 30 days of written notice |
| Manufacturer defects | Manufacturer warranty passed through to owner with documentation |
California's Implied Warranty Protections
Even without a written warranty, California law provides: implied warranty of workmanship (all work must meet the standard of care of a reasonably skilled contractor); Right to Repair Act (SB 800) rights to demand repair of construction defects within defined statutory periods (1–10 years depending on defect type); and CSLB consumer protection (complaints about licensed contractors can result in license suspension).
What Must Be in the Contract Under California Law
Under California Business & Professions Code §7159, every home improvement contract must include: contractor's name, business address, and license number; description of work and materials; approximate start and completion dates; contract price or T&M rates with NTE; notice of the homeowner's 3-business-day right to cancel (for contracts signed at home); and the CSLB consumer notice.
Critical Contract Clauses Often Missing
Lien Waiver Requirement: California's mechanics lien law allows subcontractors and suppliers to place a lien on your property if they aren't paid — even if you've paid your GC in full. Include: "As a condition of each progress payment, Contractor shall provide Conditional Lien Waivers. Final payment is conditioned on Unconditional Lien Waivers from all parties."
Preliminary Notice Tracking: In California, subcontractors and suppliers must serve a "Preliminary Notice" (20-Day Notice) to preserve their lien rights. Ask your contractor for a list of all parties who have served preliminary notices — this tells you who has lien exposure on your project.
Substantial Completion Definition: "Substantial Completion means the stage of Work when the Work is sufficiently complete that Owner can occupy or utilize the project for its intended use." Without this definition, disputes about when the final payment is due — and when the warranty clock starts — are common.
Frequently Asked Questions
Q: Can I sue a contractor if they refuse to honor their written warranty?
Yes. A written warranty is an enforceable contract. You can file a CSLB complaint, pursue small claims court (up to $12,500 in California), or file in civil court for larger amounts. A dispute resolution clause in the contract may control the process.
Q: What if the contractor goes out of business before my warranty expires?
Your options narrow significantly. The CSLB bond provides up to $25,000 in recovery. Manufacturer warranties on products remain valid regardless of contractor status. This is why verifying contractor financial stability before hiring matters.
Q: Is a 1-year warranty standard in Los Angeles?
Yes. One year is the industry baseline. Two years on specific systems (roof, waterproofing) is common and worth requesting.
Want a second opinion before you sign anything?
We review bids, flag problems, and connect Los Angeles homeowners with contractors we'd actually vouch for. No cost to you.
Talk to Our Team