What to Know Before Doing a Complete Full Demo for an SB9 + ADU Project in Orange County
You found the lot. An aging single-family home sitting on 7,000 square feet in a solid R1 neighborhood — Costa Mesa, Anaheim, Garden Grove, somewhere in OC. The plan is clean: demolish the existing structure, do an SB9 urban lot split, and build two brand-new SFRs — each with an ADU or JADU — on the two resulting parcels. You've run the income math. You know what the finished product is worth.
And then the city sends back the application.
One line stops everything: "The proposed lot split would not require demolition or alteration of any housing that is subject to a recorded covenant, ordinance, or law that restricts rents... a parcel on which an owner has exercised rights under Government Code Section 7060 et seq. to withdraw accommodations from rent or lease within 15 years before the date of the application, or housing that has been occupied by a tenant in the last three years."
This is Criterion 6 under Government Code Section 66411.7, and it's where a lot of SB9 demo projects quietly die. Not because of lot size or setbacks — but because of the property's rental history.
Here's what it actually means, and how to check before you're already in contract.
The Four Disqualifiers That Live Under Criterion 6
When your SB9 project requires demolishing an existing residential unit — and virtually every demo-and-rebuild project does — the city has to verify that the unit being torn down doesn't fall into one of these four categories:
1. Rent-restricted by covenant, ordinance, or law
If the unit carries a deed restriction tied to an affordable housing program — think Low Income Housing Tax Credit compliance, inclusionary housing covenants, or any recorded agreement that caps rents to a percentage of Area Median Income — the demolition is off the table. These covenants typically survive ownership changes and are recorded on title. A preliminary title report will surface them.
2. Subject to local rent or price control
In cities with rent stabilization or rent control ordinances, units that fall under that protection cannot be demolished for an SB9 project. Santa Ana is a live example — the rent control cap there is already reshaping how investors look at existing rental stock. If the unit you're planning to demolish is covered by a rent ordinance, you don't have a path forward on SB9.
3. Government Code Section 7060 — the Ellis Act restriction
This is the one that catches people off guard.
Government Code Section 7060, commonly known as the Ellis Act, gives landlords the right to exit the rental market entirely — to withdraw their property from residential rental use. When an owner exercises Ellis Act rights, tenants are formally displaced, the property comes off the rental market, and specific tenant protections and relocation obligations kick in.
But here's the problem for SB9: if the owner of that property ever exercised Ellis Act rights within the 15 years prior to the SB9 application, the parcel is disqualified. It doesn't matter that the property has since sat vacant, changed ownership, or been owner-occupied. The clock runs from the date the Ellis Act rights were exercised — and it runs 15 years.
So if someone went through the Ellis Act process in 2015 and you're submitting an SB9 application in 2026, you're still inside that window.
This comes up more than people expect on older rental properties in OC and LA. An owner who wanted to move into the property, or who was tired of being a landlord, might have formally withdrawn the unit from the rental market years ago. If you're acquiring a property that was previously a rental — or one that has any history of tenant displacement — you need to research whether Ellis Act rights were ever invoked.
How do you check? County recorder's office. Ellis Act withdrawals are supposed to be recorded, and a title search combined with a direct inquiry to the city's housing department should surface any history. For LA County properties specifically, the LA Housing Department maintains records. In OC, your city's planning or housing department is the starting point.
4. Tenant-occupied within the last three years
Even if the unit has never been subject to rent control and no Ellis Act history exists, the property still fails Criterion 6 if it was occupied by a tenant at any point in the three years preceding the SB9 application.
This is the most common disqualifier in practice — and for a full demo project, it's the one with the harshest practical consequence. When you're proposing to demolish the existing structure entirely, the city is looking at the unit being destroyed, not just the land. If that unit housed a tenant within the past three years, the demolition cannot proceed under SB9, period. There's no waiver, no hardship exception, and no workaround at the planning level.
It doesn't matter that the tenant is long gone. It doesn't matter that the lease expired naturally. It doesn't matter that the seller gave proper notice and the tenant moved out voluntarily six months ago. If anyone was renting that unit within the three-year window before you file, the SB9 demolition path is closed.
This is what makes full demo SB9 projects fundamentally different from lot splits that preserve the existing structure. When you're tearing the house down, you need clean owner-occupancy history — not just an empty property.
The Dogwood Street approval in Costa Mesa is the clearest real-world example of how cities apply this: the application passed in part because the owner had occupied the property themselves since 2019, meaning no tenant occupancy within the relevant three-year window. The city confirmed it explicitly in the staff analysis. That's the bar.
Why This Is Such a Problem for the Demo-and-Rebuild Strategy
The typical SB9 demo + ADU play is built on finding undervalued, older housing stock — the kind of 1950s and 60s ranch homes that have traded hands multiple times, often with tenants in place. These are exactly the properties that are most likely to have tenant history, rent control exposure, or a landlord somewhere in the chain who went through the Ellis Act.
Investors engineering multi-unit stacks in LA County with SB9 and ADUs know this well. The deal sourcing is harder than it looks because the best candidates for the demo-and-rebuild play — the right lot size, the right location — are often rental properties. And rental properties have rental history.
The three-year tenant occupancy rule in particular creates a genuine holding period problem. If you acquire a tenant-occupied property today with the intention of eventually demolishing it for SB9, you can't just wait for the lease to expire and then submit. You have to wait three years from the last date of tenant occupancy before the SB9 demolition path is available.
That's a long hold on a property that isn't generating the income you ultimately projected from the development.
What to Look for Before You Write the Offer
If you're serious about the demo-and-rebuild SB9 strategy, here's the diligence sequence that matters:
Tenant history: Ask directly. When did the last tenant vacate? Get it in writing, either as a seller disclosure or through lease documentation and utility records. A property that's been owner-occupied since 2021 or earlier clears the three-year window. Anything more recent and you're waiting, or the path is closed.
Rent restriction covenants: Pull a preliminary title report before you're in contract. Affordable housing deed restrictions will appear. If anything on title references income limits, affordability covenants, or government programs, flag it immediately.
Local rent control status: Check whether your target city has a rent ordinance and whether single-family homes are covered. Most California rent control ordinances — including those in LA County — exempt single-family homes and condos from rent stabilization, but that exemption isn't universal. AB 1482 covers many multi-family units but specifically exempts most single-family homes sold to owner-occupants with proper notice. Know your city's rules before you assume the unit is exempt.
Ellis Act history: This one requires more legwork. Check with the city housing department and county recorder. In LA County especially, Ellis Act evictions are tracked because of the tenant relocation obligations they trigger. An older property with any history of formal tenant displacement is worth verifying.
The Owner-Occupant Path Forward
For properties that don't yet clear the three-year window, there's only one legitimate path: owner-occupy the property yourself during the holding period, wait out the clock, and then apply.
That's exactly what works — and the real SB9 + ADU case study that actually penciled in Buena Park required patience that most buyers underestimate. The holding period is the cost of entry on certain properties. Whether that math still works depends on your carry costs, your cost of capital, and what the finished product is worth when you finally build.
If the property clears all four criteria under Criterion 6, you're in genuinely good shape. The demolition itself isn't what's hard — it's that specific rental history checkpoint that filters out most of the candidates most investors are looking at.
One More Note on the Lot Split Itself
Even if Criterion 6 doesn't block you, the demolition still triggers a specific sequencing requirement under the California Housing Crisis Act: the city cannot issue a demolition permit until replacement unit plans have been submitted and reviewed. And the final parcel map won't be recorded until the existing residence has actually been demolished.
So the timeline is: lot split approval → replacement unit plans submitted → demolition permit issued → demo completed → final map recorded → building permits issued. That's a long runway. Corner lots and deep rectangular lots that give you flexibility on how you configure the new construction make a real difference here because you're optimizing the finished product across a timeline that spans 18 to 24 months from contract to building permit.
If you're evaluating a property right now and you're not sure whether it clears the Criterion 6 threshold — tenant history, rent control status, Ellis Act exposure — that's worth sorting out before you're in escrow. The lot size and zoning you can verify on your own. The rental history requires actual diligence.
Ready to Run the Numbers on a Demo + ADU Project?
If you're looking at a property in Orange County and want to know whether it actually qualifies for a full demo SB9 + ADU play — and what the finished project would be worth — text or call Dylan Serna directly to schedule an investor call. We'll go through the property together, check the rental history, and figure out whether the timeline works for what you're trying to build.
Dylan Serna | The ADU Realtor 📞 Text or call: (714) 860-2868
