The California Seller Disclosure Checklist for 2026

A clean California seller file can still need 20 or more disclosure decisions before the buyer removes contingencies. Some are universal. Some only fire because the home was built before 1978, sits in a high fire hazard severity zone, belongs to an HOA, or carries a Mello-Roos special tax. This California seller disclosure checklist is built for that work: what to send, when it is triggered, and which statute points you there.

This checklist is for California residential resale transactions, especially one to four unit properties. It covers the core seller disclosure package, common federal disclosures, California disclosure requirements, and conditional items that agents miss when the file looks ordinary.

• Get statutory disclosures out early, ideally with the listing package or immediately after acceptance.
• If a disclosure is delivered late, track the buyer cancellation window under the governing statute and contract.
• Keep proof of delivery, not just a copy of the completed form.
• Separate statutory requirements from C.A.R. contractual forms. Both matter, but they are not the same thing.
• When a seller does not know an answer, do not improve it for them. Have them answer accurately and explain if needed.

Most disclosure misses are not caused by ignorance of the TDS. They happen because nobody checked the conditional triggers early. Build these into intake, not escrow cleanup.

• Year built before 1978: lead-based paint package is likely required.
• Year built on or before January 1, 1994: water-conserving plumbing fixture disclosure is in play.
• Year built before January 1, 2010 plus high or very high fire hazard severity zone: AB 38 fire hardening disclosure may apply.
• Common interest development: order the HOA documents under Civil Code sections 4525 and 4530 early, because management companies can be slow.
• Mello-Roos or 1915 Act assessment: obtain the special tax or assessment notice, not just the tax bill.
• Mapped hazard area: order the natural hazard disclosure report and read the exceptions, not only the cover page.
• Pre-1960 light-frame residential construction: check earthquake safety booklet and report obligations under Government Code section 8897 et seq.
• City point of sale rules: confirm local retrofit, sewer lateral, energy, and rent control disclosures before marketing.

The TDS is the anchor document. Civil Code section 1102.6 gives the statutory form. Civil Code section 1102.3 governs delivery and buyer cancellation rights when the disclosure arrives after the buyer has already made an offer.

The seller should answer from actual knowledge. The agent should not coach the seller into softer language. If the seller knows about a roof leak, insurance claim, unpermitted addition, drainage issue, neighbor dispute, or recurring mold condition, it belongs in writing. The duty to disclose known material facts sits beside the form requirement. It does not disappear because a box is not perfect.

C.A.R. forms often go beyond the statute. The Seller Property Questionnaire is a good example. It is not the TDS statute itself, but it is commonly required by contract and broker policy. Treat it seriously. If the contract says deliver it, it becomes a file requirement even if the Civil Code did not name that form.

The natural hazard disclosure is not just a report receipt. It is a statutory disclosure framework under Civil Code section 1103 and related map statutes. A third-party NHD company can prepare the report, and most agents use one. That does not mean the seller and agents can ignore actual knowledge. If the seller knows the creek floods the garage every few winters, disclose it even if the mapped flood box is not checked.

AB 38 deserves its own pass. The common trigger is a residential property built before January 1, 2010, located in a high or very high fire hazard severity zone, and otherwise subject to the TDS. Civil Code section 1102.19 requires disclosure of listed features that may make a home vulnerable to wildfire and flying embers. Defensible space compliance documentation may also matter under Public Resources Code section 4291, Government Code section 51182, and local implementation rules.

The best disclosure systems are boring. They ask the same intake questions every time, generate the right package, and make late items visible before the buyer's agent asks for them.

1. 1At listing intake, capture APN, year built, property type, HOA status, occupancy, known assessments, fire zone clues, and city.
2. 2Before active marketing, order NHD, prelim title, HOA package if applicable, and local point of sale reports.
3. 3Before seller signature, check that conditional forms match the intake facts.
4. 4Before buyer delivery, run a signature audit and verify initials, dates, and seller answers are complete.
5. 5After delivery, save proof of transmission and track any statutory or contractual cancellation window.
6. 6Before contingency removal, confirm late reports, HOA documents, and amended disclosures have been delivered.

Plenty of tools help agents manage disclosures. Some are excellent at forms access, document storage, or e-signature. The operational gap is different. Most tools read documents, organize them, or wait for the agent to drive the next step. AutoTC writes the documents, sends them, and chases the humans when the file stalls.

AutoTC is an autonomous AI transaction coordinator by Real Estate AI, LLC. For California residential files, it performs unlicensed assistant work. It does not negotiate, give legal or tax advice, or sign for anyone.

The important distinction is execution. An agent can text a plain sentence, email, or call, and AutoTC can generate complete, state-specific documents from a library of hundreds of seeded forms. For seller disclosures, it builds the package, sends the seller a plain-language webform localized to the seller's device language, follows up on a human-like cadence, and hands the task back to the agent for a personal call when automated chasing stops working.

When answers come in, AutoTC stamps them into the forms and routes the package for e-signature. It can order and file natural hazard disclosure reports. It runs a signature audit across the file and knows which signature is missing on which document. It also tracks contract deadlines and contingencies from the executed contract, coordinates vendors over real SMS and email, sends commission demands, and coordinates with escrow and title.

Coverage starts in California and expands state by state. Pricing is usage-based. Agents fund a wallet and pay for what the AI actually does, with no monthly subscription and no per-transaction flat fee.

Turn this checklist into your listing intake. Add the property year, fire zone screen, HOA status, Mello-Roos and assessment check, local ordinance review, and NHD order date. Then audit delivery before the buyer asks.

If you use AutoTC, the same checklist becomes work for the system, not a reminder for someone to do later. Still review low confidence items, local requirements, and anything that needs broker or legal judgment. That is where good operators stay careful.