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Replacing toilets in California: the noncompliant fixture law

Updated · Editorial team; not yet technically reviewed

Short answer

For California single-family homes built on or before January 1, 1994, Civil Code §1101.4 requires noncompliant plumbing fixtures, including older high-flow toilets, to be replaced with water-conserving ones. A remodel permit triggers the replacement before final sign-off, owners were required to finish by January 1, 2017, and sellers must disclose any noncompliant fixtures.

Hand flushing a toilet

What California requires or changes

  • Since January 1, 2014, building alterations or improvements to a single-family home require replacing all noncompliant plumbing fixtures as a condition of final permit approval. [1]

  • Owners of single-family homes were required to replace noncompliant fixtures with water-conserving ones on or before January 1, 2017. [1]

  • Since January 1, 2017, sellers must disclose in writing the replacement requirement and whether the home has any noncompliant fixtures. [1]

  • The law applies to residential property built on or before January 1, 1994. [1]

How a kitchen remodel can mean new toilets

The surprise for many owners: the permit doesn't have to be for a bathroom. Under §1101.4, an alteration or improvement to a pre-1994 house makes replacing every noncompliant fixture a condition of final approval. Budget for the toilets, showerheads and faucets at the start of a remodel rather than at the final inspection.

Is your toilet noncompliant?

  • Look inside the tank or behind the seat hinge for a flow stamp. Older toilets often show 3.5 gallons per flush or more.
  • A toilet with no stamp, a very large tank and a slow refill is likely pre-1994.
  • Dual-flush and 1.28-gallon high-efficiency models meet current standards; see toilet installation for choosing one.

City rebates and rules on top of state law

Water agencies across California have offered rebates for high-efficiency toilets, and some cities enforce the fixture rule at every permit. The toilet rebates guide and city pages such as Los Angeles cover those details.

Common questions

Which California homes does the fixture replacement law cover?

Residential property built on or before January 1, 1994; the single-family rules in §1101.4 are the ones most owners meet.

Can a remodel permit in California require me to replace my toilets?

Yes. For a pre-1994 single-family home, final approval of an alteration or improvement requires replacing all noncompliant fixtures.

What was California's deadline for replacing old toilets?

Single-family owners were required to replace noncompliant fixtures by January 1, 2017.

What must a California seller disclose about plumbing fixtures?

The replacement requirement and whether the home has noncompliant fixtures, in writing.

How do I check how many gallons my toilet uses?

Look for a stamp inside the tank or near the seat hinge; older toilets often show 3.5 gallons per flush or more.

Does the law cover showerheads and faucets too?

It covers noncompliant plumbing fixtures generally, so faucets and showerheads can be included along with toilets.

Is a dual-flush toilet compliant in California?

Current dual-flush and high-efficiency models meet water-conserving standards.

Who checks fixture compliance during a California remodel?

The local building department, as a condition of the final inspection.

Will replacing a toilet lower my water bill?

Usually, if the old toilet uses far more per flush; savings depend on household size and use.

Do California water agencies pay rebates for new toilets?

Many have; programs change, so check your water supplier before buying.

Toilet Installation across California

Sources (1)
  1. California Civil Code §1101.4 · checked 2026-10-03
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