Asbestos was never banned in California on a single date. Federal and state restrictions phased it out in stages between 1973 and 2024: spray-on asbestos went first in 1973, pipe and block insulation followed in 1975, most building products disappeared from California construction by the early 1980s, and the EPA finalized a ban on the last commercial uses of chrysotile asbestos on March 28, 2024. California also added its own prohibitions along the way, including a state spray-on ban under Health and Safety Code Section 25910. None of these rules require removing asbestos that is already in a building, which is why millions of California homes built before 1980 still legally contain it.
The Federal Phase-Out, Date by Date
Most of the dates people associate with “the asbestos ban” are federal, and they shaped what California contractors could legally install.
1973: Spray-On Asbestos
The EPA’s first major action came in 1973 under the Clean Air Act’s National Emission Standards for Hazardous Air Pollutants (NESHAP). The rule banned spray-applied surfacing materials containing asbestos when used for fireproofing and insulation.1US EPA. EPA Actions to Protect the Public from Exposure to Asbestos The spraying process itself threw loose fibers into the air, which made it the most urgent exposure route to shut down. California’s high-rise construction in Los Angeles and San Francisco felt the change immediately.
1975: Pipe and Block Insulation
Two years later, the EPA expanded NESHAP to cover pre-formed and wet-applied asbestos pipe insulation and block insulation on boilers, hot water tanks, and similar facility components, provided the materials were friable.1US EPA. EPA Actions to Protect the Public from Exposure to Asbestos That closed off one of the most common exposure pathways in industrial and commercial buildings.
1989 Ban and 1991 Reversal
In 1989, the EPA attempted a sweeping ban on nearly all asbestos-containing products under the Toxic Substances Control Act. In 1991, the Fifth Circuit gutted that rule in Corrosion Proof Fittings v. EPA, finding that the agency hadn’t shown it had chosen the “least burdensome” regulatory option TSCA required.2Justia. Corrosion Proof Fittings v. EPA, 947 F.2d 1201 (5th Cir. 1991) The court let the ban stand only for products that were no longer being manufactured as of July 1989, which covered a handful of items like certain flooring felt and paper products. Brake pads, gaskets, industrial diaphragms, and other chrysotile products stayed legal. This decision left a 33-year gap during which chrysotile asbestos remained in active commercial use.
2024: The Final Chrysotile Ban
On March 28, 2024, the EPA finalized a rule prohibiting the manufacture, import, processing, distribution, and commercial use of chrysotile asbestos, the only form still in active use in the United States.3US EPA. Asbestos Laws and Regulations The affected products include chlor-alkali diaphragms, sheet gaskets, aftermarket automotive brakes and linings, oilfield brake blocks, and other vehicle friction products.1US EPA. EPA Actions to Protect the Public from Exposure to Asbestos
Compliance deadlines vary. Consumer aftermarket brake linings and gaskets face a two-year phase-out from the rule’s effective date. Chlor-alkali plants, which use asbestos diaphragms to produce chlorine for municipal water treatment, received longer timelines so that water purification wouldn’t be disrupted. Six of the eight chlor-alkali facilities must complete their transition within five years; the remaining two convert on staggered deadlines of eight and twelve years.4US EPA. Biden-Harris Administration Finalizes Ban on Ongoing Uses of Asbestos to Protect People from Cancer
California’s Own Asbestos Laws
California didn’t wait for Washington on every front, and in some areas state law reaches further than the federal rules.
Spray-On Ban Under Section 25910
California Health and Safety Code Section 25910 bans spraying any substance containing any amount of asbestos in or on a building during construction, alteration, or repair. It also prohibits selling, manufacturing, or mixing any spray-applicable asbestos product.5California Legislative Information. California Code Health and Safety Code HSC 25910 – Prohibition of Spraying Substances Containing Asbestos Where federal NESHAP targeted fireproofing and insulation, California’s statute also covers decorative applications like textured ceiling coatings.
Cal/OSHA Workplace Standards
Cal/OSHA enforces asbestos exposure through Title 8 of the California Code of Regulations. Section 5208 covers general industry workplaces; Section 1529 covers construction, including demolition, removal, and installation of asbestos-containing products.6Department of Industrial Relations. California Code of Regulations Title 8 Section 1529 – Asbestos These rules require air monitoring, respiratory protection, and decontamination procedures. During the late 1970s and 1980s, California adopted permissible exposure limits more protective than federal OSHA standards.
Proposition 65
Asbestos is listed as a known carcinogen under Proposition 65, so any business that knowingly exposes people to asbestos must give a clear and reasonable warning first.7Proposition 65 Warnings Website. Asbestos The warning obligation is independent of the workplace and construction rules.
Why “Banned” Doesn’t Mean “Must Be Removed”
Every ban described above restricts the new use of asbestos. None of them requires you to tear out asbestos that is already in a building. Floor tiles, pipe insulation, roof shingles, and popcorn ceilings installed before the bans took effect can remain in place indefinitely so long as the material is intact and undisturbed.
This is deliberate. Intact asbestos that hasn’t deteriorated doesn’t release fibers. Pulling it out carelessly creates more exposure than leaving it alone. Regulators treat undisturbed asbestos as a managed risk rather than an emergency. The moment you plan to remodel, demolish, or renovate a pre-1980 California building, however, the federal and state handling rules come into play.
What the Bans Mean for Older California Buildings
Disclosure to Employees
Under California Health and Safety Code Section 25915, the owner of any building constructed before 1979 who knows the building contains asbestos must notify every employee working there. The notice has to identify the known locations of the asbestos, any survey results, handling instructions to prevent disturbance, and the potential health risks.8California Legislative Information. California Code Health and Safety Code HSC 25915 If the owner doesn’t know how to handle the material or what the health effects are, the statute requires the owner to say so and direct employees to local or state health agencies.
Disclosure to Home Buyers
If you sell a California home of one to four units, the Transfer Disclosure Statement requires you to identify known environmental hazards, and asbestos is specifically listed as an example.9California Department of Real Estate. Disclosures in Real Property Transactions You aren’t required to test for asbestos before listing, but if you know the material is there, or if a test has already been done, you have to tell the buyer. Failing to disclose known asbestos can lead to lawsuits for misrepresentation and liability for abatement costs.
Renovation and Demolition Triggers
Federal NESHAP requires a pre-work inspection of commercial, institutional, or industrial buildings before demolition or renovation. Residential buildings with four or fewer units are generally exempt from NESHAP, though California’s own rules still apply.10US EPA. Overview of the Asbestos National Emission Standards for Hazardous Air Pollutants (NESHAP) Residential buildings lose their exemption when they’re taken down as part of a commercial or public project, such as a highway expansion.
Projects that meet federal thresholds (at least 260 linear feet on pipes, 160 square feet on other surfaces, or 35 cubic feet of asbestos material) must be reported to the appropriate state or local agency at least 10 working days before work begins.11eCFR. 40 CFR Part 61 Subpart M – National Emission Standard for Asbestos In California, local air quality management districts receive the notice. South Coast AQMD, for example, requires 10 working days’ notice for demolition or renovation and exempts renovation projects disturbing less than 100 square feet.12South Coast Air Quality Management District. Rule 1403 – Asbestos Emissions From Demolition/Renovation Activities Local thresholds vary, so check with your air district before starting.
California also requires asbestos abatement contractors to register with Cal/OSHA when the work involves 100 square feet or more of material containing over 0.1 percent asbestos.13Department of Industrial Relations. Asbestos Contractor Registration At least one trained representative must be present on site throughout the removal. Hiring an unregistered contractor for a job above these thresholds exposes both the contractor and the property owner to enforcement.
Putting the Dates Together
If someone asks when asbestos was “banned” in California, the honest answer runs across five decades. Spray-on products in 1973. Friable pipe and block insulation in 1975. Most asbestos-containing building products out of general use by the early 1980s. California’s own spray and workplace rules layered on top. A broad federal ban that was attempted in 1989, mostly vacated in 1991, and finally completed for chrysotile on March 28, 2024. For an older California home or commercial building, the practical date that matters most isn’t the ban at all; it’s the year the building was built, because anything constructed before 1980 should be treated as potentially containing asbestos until an inspection says otherwise.