Selling a Home with Unpermitted Work: A Practical California Guide

7 min read · April 2026

Unpermitted work is one of the most common issues that surfaces during California real estate transactions. Whether it’s a converted garage, an added bathroom, or an enclosed patio — if it wasn’t permitted, it creates questions for buyers, lenders, and appraisers. Here’s how to handle it.

Disclosure Is Not Optional

California Civil Code §1102 requires sellers to disclose all known material facts about the property. Unpermitted work is a material fact. Period. Sellers who hide it face lawsuits for rescission, damages, and fraud. The cost of honest disclosure is almost always less than the cost of getting caught.

Your Pre-Sale Options

Legalize it: Apply for after-the-fact permits. This is the gold standard — it maximizes your sale price and minimizes your liability. Many jurisdictions now have streamlined processes, especially for ADUs.

Disclose and discount: If legalization isn’t practical (cost, timeline, or code constraints), disclose the unpermitted status and factor it into your pricing. A buyer who knowingly purchases with disclosed issues has weaker claims later.

Offer a credit: Give the buyer a credit at closing to cover estimated compliance costs. This keeps the transaction moving while addressing the issue transparently.

What Not to Do

Do not hide it. Do not assume the buyer won’t find out. Do not rely on your agent to handle it without your involvement. And do not wait until you’re in escrow to address it — last-minute permit discoveries kill deals.