The concord duplex owner occupied exemption isn’t automatic just because you live in one unit. The city’s rent ordinance carves out a specific exemption for owner-occupied duplexes, but whether it applies to your property depends on the notices you have—or haven’t—sent to your address. A local read of the current ordinance is the only way to know for sure, because the exemption turns on a timeline and a paper trail that many owners overlook.
The Real Challenge: Notices Already Sent
Most owners assume that moving into one side of the duplex is enough. It’s not. Concord’s ordinance requires that you serve specific notices on the tenant in the other unit, and the clock starts when those notices are delivered. If you didn’t send the right form at the right time, the exemption may not be in effect—even if you’re living there now. The ordinance also carves out single-family homes, condos, and ADUs, so a duplex that was converted from a single-family home might fall into a different category altogether. This is the kind of detail that trips up well-intentioned landlords who try to handle it themselves.
A Genuine Partial Answer: Read the Notices You Already Received
The most reliable way to know where you stand is to pull out every notice the city has sent to your property address. Concord’s rent program sends annual notices to all rental properties, and those notices often include a statement about the property’s exemption status. If the city has you on file as exempt, the notice will say so. If it doesn’t, you may need to file a new exemption claim. The notices are the closest thing to an official answer without calling the city, and they’re the first thing we ask for when an owner brings us this question.
What the Ordinance Actually Says
The owner-occupied exemption in Concord applies to a duplex where the owner resides in one unit as their principal residence. But the ordinance also requires that the owner has continuously occupied the unit since the tenancy began, or that the tenant was given proper notice of the exemption at the start of the tenancy. If you bought the property with a tenant already in place, the exemption might not apply unless the previous owner met the notice requirement. The ordinance also interacts with state law under AB 1482, which has its own owner-occupied carve-out for duplexes—but the two don’t always align. For a detailed breakdown of how Concord’s ordinance treats duplexes versus single-family homes, see our article on Concord Rent Ordinance: Duplex vs Single-Family Exemptions.
Why a Local Read Matters
Concord’s rent ordinance is not a state template. It has its own definitions, its own notice forms, and its own deadlines. The exemption for owner-occupied duplexes is one of several, and each has its own conditions. For example, the ordinance also exempts single-family homes and condos, but the documentation required for each is different. If you file the wrong form, or file the right form late, you can lose the exemption for the current tenancy. And because the ordinance recalculates annually, a stale figure from last year’s notice could be wrong today. This is why we always start with the notices you already have—they reflect the city’s current understanding of your property.
How We Walk You Through It
When an owner brings us this question, we don’t guess. We sit down with the notices you’ve received, the lease, and any correspondence from the city. We check the current ordinance language for your specific situation—whether you’re owner-occupying now, planning to move in, or dealing with a tenant who’s questioning the exemption. Then we map out exactly what needs to happen: which form to file, what evidence to attach, and how to serve it properly. If the exemption was missed, we look at whether it can be cured retroactively and what that means for rent increases or eviction protections. This isn’t legal advice, but it’s the operational layer that most landlords miss—the process, the paperwork, and the timeline that turns a rule into a real defense.
If you’re managing a property in Concord and want to make sure your exemption is in place, our real estate services include a full review of your rent ordinance compliance. We also help owners automate the record-keeping that proves exemption status over time—something we cover in our article on Landlord Record Keeping Contra Costa: What to Prove. The goal is to build a system that keeps you ahead of the notices, not scrambling after them.
If you’d like us to walk through your specific situation, the next step is a conversation. You can reach us through our contact page.
What’s the one notice you received from the city that made you question your exemption status?
About this article. This is general information and our own opinion, written from how we run operations for owners and businesses in Contra Costa County. It is not legal, tax, accounting, financial or other professional advice, it is not a recommendation to take or avoid any action, and it is not a substitute for advice about your own property, tenancy or business. CAO Investment Group is not a law firm, and reading this does not create an attorney-client or any other professional relationship. Local ordinances, fee schedules, forms, thresholds and deadlines change often and differ from city to city within Contra Costa County — anything here may be out of date by the time you read it, including as of the publication date shown above. Verify anything you plan to rely on against the current rules published by your own city or county, and speak to a qualified attorney, CPA or licensed professional about your specific situation before you act. We make no warranty that this information is current, complete or accurate, and we accept no liability for any action taken or not taken on the basis of it.
