One standard for a rule that changes at the city line.

California's Zone 0 ember-resistant zone rule (PRC §4291 / AB 3074) applies to millions of homes, but whether it's already enforceable, adopted but not yet in effect, or tightened further by a local ordinance depends on exactly where a property sits - sometimes down to a specific city, sometimes a specific neighborhood within one. Zone Zero Check exists to answer that for one specific address, in plain language, instead of leaving a homeowner to piece it together from a statute, a newly-adopted regulation, and whatever their own city or fire district has layered on top.

What it does

Enter an address and get a free, rule-based read on that property's Zone 0 status - no account, no photos required. From there, an optional paid report analyzes photos of the property against the actual rule text and lists every problem found, each with a clear, specific fix.

The free check is deterministic, not AI - the same address and answers always produce the same result, traceable back to the actual regulation. See Sources & methodology for exactly what informs it.

Where this fits

Zone Zero Check is a private, informational tool. It helps you understand and prepare for the official process. It is not part of it.
What Zone Zero Check does
Free

Does the rule even reach your address?

Enter an address and answer nine questions. You get your Fire Hazard Severity Zone, whether Zone 0 applies to you at all, every problem your answers flag, and one fix in full.

Free, about a minute

Paid

What is actually wrong at your property?

Upload guided photos of your own home. Every finding comes back with the regulation it cites, the fix, and how long you have to do it. On Photo CHECK+, a member of our review team checks every finding before anything is sent.

Photo CHECK $19.90 or Photo CHECK+ $189.90

What it never does
Not us

The official Defensible Space Inspection

The inspection a seller or buyer needs for a home sale in a High or Very High hazard zone. Booked through your local fire agency or an authorized inspector. We do not perform it, and no report from us satisfies it.

Civil Code §1102.19 / AB 38

Nothing here guarantees you will pass that inspection, and using this first does not let you skip it. What it does is tell you what a Zone 0 inspection would look at, and what is wrong today, while there is still time to fix it.

Frequently asked questions

What does Zone Zero Check do?

Enter an address and get a free, rule-based read on that property's Zone 0 status - no account, no photos required. An optional paid report analyzes photos of the property against the actual rule text and lists every problem found, each with a clear, specific fix.

Is Zone Zero Check affiliated with CAL FIRE or the State of California?

No. Zone Zero Check is an independent, AI-assisted informational tool, not affiliated with CAL FIRE or the State of California.

Does a Zone Zero Check report satisfy the official Defensible Space Inspection required for a home sale?

No. That documentation, required under Civil Code §1102.19 (AB 38), comes only from CAL FIRE or your local fire department - request it directly at fire.ca.gov/dspace. Think of a Zone Zero Check report as getting ready before that step, not a substitute for it.

How is Free CHECK different from Photo CHECK?

Free CHECK is deterministic and rule-based, using just your address - the same address and answers always produce the same result. Photo CHECK adds an AI model trained on the actual rule text that examines photos of the property closely, catching specific combustible materials and conditions a homeowner might not think to check for on a casual walk-through, then names every problem found with a specific fix.

I have a long list of problems - what do I actually need to fix first?

The paid report tells you. California's Zone 0 rule phases existing homes in on three different clocks, not one flat deadline - some things (roof debris, dead branches, chimney clearance) are due the moment the rule takes effect, most get a 3-year grace period, and a few get 3 to 5 years. Every fix in your report is tagged with which of those applies, so you know what's actually urgent instead of treating a long list as equally pressing.

Contact

Questions about a result, this site, or anything on it: hello@zonezerocheck.com.

Zone Zero Check is operated by Peract LLC, a California limited liability company, located at 2108 N St #17311, Sacramento, CA 95816.