Before a California home changes hands, three small safety items get big attention: the water heater straps, the smoke alarms, and the carbon monoxide detectors.
Water heater bracing / strapping
California Health & Safety Code Section 19211 requires that water heaters be braced, anchored, or strapped to resist falling or horizontal displacement due to earthquake motion. The seller of property generally must certify in writing that the water heater is in compliance.
The common practice is two straps (upper and lower thirds of the tank) anchored to the framing, though you should confirm the current standard and any local requirements. This applies to most residential sales.
Smoke alarm requirements at sale
California Health & Safety Code Section 13113.8 requires that a single-family dwelling offered for sale have an operable smoke alarm, approved and listed by the State Fire Marshal and installed per regulations. Many jurisdictions and the current code call for alarms in each bedroom, outside sleeping areas, and on each level — verify the current local and state requirement.
At point of sale, the seller is generally responsible for ensuring compliant, operable smoke alarms are in place.
Carbon monoxide detector requirements
California Health & Safety Code Section 17926 requires the owner of a dwelling intended for human occupancy to install carbon monoxide devices (approved and listed by the State Fire Marshal) in each existing dwelling unit that has a fossil-fuel-burning heater or appliance, a fireplace, or an attached garage.
Important nuance: the CO detector requirement is not only a point-of-sale rule — owners must comply regardless of whether they are selling. But it routinely comes up at sale because buyers and agents confirm detectors are present and working.
The statutory compliance forms
To document compliance, California sellers commonly use a statutory Water Heater and Smoke Detector Statement of Compliance (the C.A.R. WHSD form covers water heater bracing and smoke alarms), and the transaction typically also confirms carbon monoxide detectors.
These statements are signed by the seller and provided to the buyer. They are about safety compliance, not a substitute for the buyer's own inspection of the items.
What buyers and sellers should do
- Sellers: install or verify two-strap water heater bracing, working State Fire Marshal-listed smoke alarms, and CO detectors where required, before close; then complete the compliance statement honestly.
- Buyers: confirm during your inspection that the straps, smoke alarms, and CO detectors are present and functional — and ask for any that are missing.
- Both: verify the current count and placement requirements, since codes are updated over time and localities may add rules.
Important Disclaimer
Brian Cooper is a licensed REALTOR® with eXp Realty, not an attorney or CPA. This page is general information about California real estate practice and is not legal or tax advice. Disclosure laws and the standard C.A.R. forms change, and every transaction is different. Confirm the specifics for your situation with the appropriate licensed professional (real estate attorney, CPA, or your county) and the current California law and C.A.R. forms before you act.
Frequently Asked Questions
Does California require water heaters to be strapped before a sale?
Yes. Health & Safety Code Section 19211 requires water heaters to be braced, anchored, or strapped against earthquake movement, and the seller generally must certify compliance in writing.
How many smoke alarms does California require at sale?
State law requires at least an operable, State Fire Marshal-listed smoke alarm in a home offered for sale, but the current code and many jurisdictions require alarms in each bedroom, outside sleeping areas, and on each level. Verify the current requirement for your property.
Are carbon monoxide detectors required only when selling?
No. Under Health & Safety Code Section 17926, owners of dwellings with a fossil-fuel appliance, fireplace, or attached garage must install CO detectors regardless of a sale. It simply gets confirmed at sale too.
What form documents compliance?
Sellers commonly use a statutory Water Heater and Smoke Detector Statement of Compliance (the C.A.R. WHSD form), and the transaction also confirms carbon monoxide detectors. Your agent will provide the current form.
Who is responsible for installing these at sale?
The seller is generally responsible for compliance at point of sale, but buyers should still verify during inspection and request any missing or non-working devices.
Do these compliance forms replace a home inspection?
No. The statements confirm specific safety items only. They are not a substitute for a general home inspection or the buyer's own investigation.
