What Is California’s Construction Defect Statute of Limitations?

California’s construction defect statute of limitations runs anywhere from one to ten years, depending on whether the defect was obvious or hidden, which part of the building is involved, and whether the home qualifies under the Right to Repair Act. Obvious defects generally carry a four-year deadline from substantial completion. Hidden defects give you three or four years from the moment you discover them, with an absolute ten-year cutoff. New homes sold after January 1, 2003 follow a separate component-by-component schedule, and some of those windows close in as little as one year.

Deadlines for Obvious (Patent) Defects

A patent defect is one a reasonable inspection would reveal: a visibly cracked foundation, a misaligned door frame, flooring that is clearly uneven. A lawsuit over a patent defect must be filed within four years of the date the project was substantially completed.¹

If the defect causes an injury to a person or to property during the fourth year, you get one extra year from the date of that injury to file. No claim, however, can be brought more than five years after substantial completion, regardless of when the injury occurred.¹

One important carve-out: the four-year patent defect rule under CCP 337.1 does not apply to owner-occupied single-unit residences. If you own and live in a standalone home, a defendant cannot use that statute against you. For homes built after 2003, the Right to Repair Act applies instead.¹

Deadlines for Hidden (Latent) Defects

A latent defect is hidden. Faulty wiring inside a wall, a slow roof leak, improperly compacted soil that shifts years later: none of these show up during a standard inspection. Because the defect is invisible at first, California applies a discovery rule. The clock starts when you discover the defect, or reasonably should have.

The length of the window depends on the legal theory:

Three years from discovery for injury to real property under a negligence or similar tort theory, per Code of Civil Procedure section 338.²
Four years for breach of a written contract, generally running from the breach itself. The discovery rule may delay that start date if the breach was concealed or not readily apparent.³

The three-year negligence deadline is the one that catches homeowners most often. People notice a small problem, assume it isn’t serious, and wait. The date you first became aware something was wrong is often the date a court will use to start the clock, not the date you finally got a professional opinion.

The Ten-Year Outer Limit

No matter when you discover a latent defect, California imposes an absolute ten-year ceiling. A latent construction defect lawsuit cannot be filed more than ten years after substantial completion.⁴ Find a hidden defect in year eleven and you are generally out of options.

This is a statute of repose, not a statute of limitations. The discovery rule cannot extend it. It runs from a fixed date and expires on schedule even if you had no way to know about the defect.

Two situations take the ten-year cutoff off the table. If the builder or design professional engaged in willful misconduct or fraudulently concealed the defect, they cannot use the repose period as a defense. And anyone in actual possession or control of the improvement when the defect caused injury cannot invoke it either, which prevents a building owner or tenant who caused or maintained the defective condition from hiding behind the clock.⁴

What “Substantial Completion” Actually Means

Nearly every deadline here runs from substantial completion, so the date matters. CCP 337.15 defines it as the earliest of the following events:⁴

Final inspection by the applicable public agency.
Recording of a valid notice of completion.
The date someone begins using or occupying the improvement.
One year after work on the improvement ceases.

The date is also specific to each trade. A plumbing subcontractor who finished and left early may have an earlier substantial completion date than the general contractor. The repose clock for any given contractor’s work starts when that contractor’s portion was substantially complete.

New Homes Under the Right to Repair Act

Homes built as original construction and sold as individual dwelling units fall under the Right to Repair Act, Civil Code sections 895 through 945.5, often called SB 800. For covered homes, the Act replaces the general patent and latent defect rules with a system of component-specific deadlines measured from the close of escrow rather than from substantial completion.⁵

The deadlines vary sharply by component:

Plumbing and sewer systems: four years from close of escrow.⁵
Electrical systems: four years from close of escrow.⁵
Exterior pathways, driveways, hardscape, and patios: four years from close of escrow.⁵
Landscaping systems: two years from close of escrow.⁵
Irrigation and drainage systems: one year from close of escrow.⁵

Defect categories that do not have a shorter component deadline, including water intrusion, structural issues, soil problems, fire protection, and roofing, fall under the Act’s ten-year statute of repose.⁶ That ten-year window is measured from substantial completion, capped at the date a valid notice of completion is recorded.

For claims that fall under the Act, the general patent and latent rules in CCP 337.1 and 337.15 do not apply. The Act is the governing framework, and its own ten-year repose period controls.⁶

Pre-Litigation Notice and Tolling Under SB 800

Before filing a Right to Repair Act lawsuit, you must follow the pre-litigation process in Civil Code sections 910 through 938. You give the builder written notice of the defect, and the builder gets a chance to inspect, offer repairs, or propose a settlement.

Civil Code section 927 protects your filing deadline while this plays out. The extension depends on what the builder does:⁷

If the builder completes repairs, the deadline extends to 100 days after the repair is completed, regardless of whether the repaired item was the original violation.
If the builder fails to respond or declines to participate, the deadline extends to 45 days after the builder’s response time expires.
If the builder uses its own alternative dispute procedure, the deadline extends to 100 days after that procedure is completed or deemed unenforceable, whichever is later.

One limit: repairs made through this process do not restart the ten-year repose clock, and they do not extend the deadline for contractor licensing claims under Business and Professions Code section 7091.⁶ Tolling keeps your claim alive during the process; it does not reset the long outer clock.

Which Deadline Applies to You

Three questions sort most situations. Is your home a qualifying new home sold after January 1, 2003? Then SB 800 controls, and you look up your defect by component in Civil Code section 896, with a ten-year ceiling for anything not separately listed. Is the property older, commercial, or otherwise outside SB 800? Then the general CCP rules apply: four years for patent defects from substantial completion (unless it is an owner-occupied single-unit residence), three years from discovery for latent damage to real property, four years from the breach for a written contract claim, and ten years absolute for any latent defect.

The short SB 800 windows are the ones that quietly expire first. A one-year irrigation deadline or a two-year landscaping deadline can close before a new homeowner notices anything is wrong. A thorough inspection during the first year of ownership is the most effective way to preserve your rights across every component category at once.

1
California Legislative Information. California Code of Civil Procedure CCP 337.1
2
California Legislative Information. California Code of Civil Procedure CCP 338
3
California Legislative Information. California Code of Civil Procedure CCP 337
4
California Legislative Information. California Code of Civil Procedure CCP 337.15
5
California Legislative Information. California Civil Code 896
6
California Legislative Information. California Civil Code 941
7
California Legislative Information. California Civil Code 927