California’s $25,000 Contractor Bond Won’t Save Your ADU

Last updated: June 2026. Bond figures verified against the CSLB and Senate Bill 607.

California’s $25,000 contractor bond does its job on a small porch. On a six-figure ADU, it is almost worthless. Here is the difference, and why it matters before you sign.

If you have shopped for an ADU contractor in California, you have seen “licensed, bonded and insured” on every website. It is meant to make you feel safe. And for a small job, the bond behind that phrase actually works. The problem is that an ADU is not a small job, and that is exactly where the bond falls apart.

This is part of our ongoing ADU contractor scam investigation series.

A contractor’s license bond is a requirement to hold an active California license. It is not insurance the contractor buys to protect you, and it is not a fund with your name on it. It is a promise, backed by a surety company, that a limited amount of money is available if the contractor breaks California’s Contractors State License Law.

The California contractor bond is capped at $25,000 total, per contractor. Not per customer. Not per project. Per contractor. A homeowner who hired the contractor for their own home can claim up to the full $25,000. A third party can claim up to $7,500. But the total paid across everyone cannot pass the bond. Once it is gone, it is gone.

This is the heart of it. The bond was sized for the kind of work most contractors do, a repair, a remodel, a small addition, where a worst-case loss is a few thousand dollars. For those jobs, $25,000 is real protection. It does what it was meant to do.

An ADU is a different animal. You are not risking a few thousand dollars. You are handing over a six-figure construction project, often financed, sometimes your whole savings. A $25,000 bond against a $200,000 ADU covers about twelve cents on the dollar, and that is if you are the only person filing a claim.

California did not leave the bond frozen. It was $15,000 from 2016 through 2022, and $12,500 before that. On January 1, 2023, Senate Bill 607 raised it to $25,000, after the CSLB found the old amount did not come close to covering most complaints.

So the issue is not that the state ignored it. It is that even the highest-ever number was set for ordinary jobs, and the ADU boom blew past it. These companies now sign hundreds of six-figure contracts at once. The bond never grew to match that.

Here it is in plain numbers, using cases that are a matter of public record. Every one of them was an ADU builder.

Anchored Tiny Homes (Sacramento) collapsed and filed Chapter 7 bankruptcy, with reporting indicating more than 450 families affected. One $25,000 bond split across 450 people is roughly $55 each. Many of those families had paid tens of thousands.

Multitaskr (Chula Vista) took at least $15 million from more than 100 homeowners, per lawsuits reported by local news. The bond protecting all of them was the same $25,000.

Nonna Homes (Rancho Cordova) had its license suspended amid complaints that families paid and got nothing back. One documented family paid $83,706 over nine months with no physical work, per reporting. Against an ADU-sized loss like that, a shared $25,000 pool is pocket change.

None of these families did anything careless. They hired a licensed, bonded contractor. The bond was simply never built to absorb an ADU company that signs hundreds of large contracts and then fails. We track these cases in the California ADU builder scam tracker.

It means the contractor met the minimum to hold a license. That is worth something. A bonded, licensed contractor is on the state’s radar, and the bond gives you a real, if small, way to recover. It beats hiring someone unlicensed.

But for a six-figure ADU, it is not a guarantee your money is safe, and it is not a substitute for checking. Treat “bonded and insured” as the floor, not the safety net.

None of this is an attack on good contractors. The honest ones will tell you the same thing. They want you to verify their license, they tie payments to completed work, and they have nothing to hide because they earn trust the real way. They are the ones who pass real verification, and they are the ones you want building your ADU.

The problem was never that contractors exist. It is that “bonded and insured” was never enough, by itself, to tell the good ones from the bad ones. That is the gap the scammers slip through, and it is the gap independent verification closes. Hold this against the bad actors, not the builder doing right by their clients.

The bond is what is left after things go wrong. Real protection happens before you pay a dollar.

1. Verify the license yourself. Look the contractor up on the CSLB, and look up the people behind the company, not just the business name. A suspended, expired, or brand-new license with no history is a reason to slow down.
2. Know the deposit law. A California contractor cannot legally demand a deposit larger than $1,000 or 10% of the contract, whichever is less. Large upfront demands “for materials” are a red flag, not normal practice.
3. Tie every payment to completed, inspected work. Never pay ahead of progress. On the ADU collapses, the families hit hardest almost always paid large sums up front.
4. Get everything in writing. Scope, schedule, and exactly what each payment covers.

Sources: California Contractors State License Board — Bond Requirements and Bond Basics (claim limits, $25,000 / $7,500). Senate Bill 607 (2021), bond increase to $25,000 effective Jan 1, 2023 — Cummins & White LLP summary. NBC Bay Area — California law leaves peanuts for scammed ADU buyers (Anchored / $25K bond). 10News San Diego — Multitaskr $15M / 100+ homeowners.