What You Need to Know When Buying a Tenant-Occupied Property for Orange County (Multi-Units and ADUs)
Buying a duplex, triplex, fourplex, or a property with an existing ADU is one of the most powerful ways to build income and long-term wealth in Southern California. But when tenants are already living in the units, the transaction works differently than a standard purchase — and there's a specific contract addendum that governs exactly how.
That addendum is the Tenant Occupied Property Addendum, or C.A.R. Form TOPA. If you're buying any property with occupants in place — whether it's a fourplex in Long Beach, a duplex with an ADU in Garden Grove, or a single-family home with a rented secondary unit — this form is part of your contract. Understanding what it covers will make you a more informed buyer and help you avoid surprises once you're in escrow.
The Core Question: Do Tenants Stay or Do They Go?
The first thing the TOPA establishes is whether you're taking the property subject to existing tenants or requiring it to be delivered vacant.
If tenants are remaining, you step into the seller's shoes as landlord on the day escrow closes. All existing leases, rental agreements, and tenancies are assigned to you at close. You inherit the lease terms, the rent rate, and whatever rights the tenant has under their agreement. This is the most common scenario on income properties — and in most cases, it's actually the preferred one, since in-place tenants mean in-place income from day one.
If you're requiring vacant delivery, the seller must exercise good faith efforts to remove the tenants before close of escrow. If they're unable to do so and California's Tenant Protection Act applies to the property, you may have limited options — the TOPA gives you the right to cancel and recover your deposit and inspection costs, or to proceed with tenants in place and waive further claims. Understanding which markets and property types fall under Just Cause eviction rules is part of the pre-offer due diligence I run on every investment property in OC and LA.
Security Deposits Transfer Through Escrow
This is a detail that buyers sometimes miss until they're deep in escrow: the seller's security deposits don't just disappear at close — they transfer to you through escrow.
Under the TOPA, the seller is required to transfer all unused tenant security deposits and any prepaid but unearned rents to the buyer through escrow, prorated as of close. This is significant for a few reasons:
It means you walk in as the new landlord already holding deposit funds you'll be responsible for when those tenants eventually move out
The seller must also disclose any tenant delinquencies — and if elected in the contract, credit you for any delinquent rent prorated to close
California Civil Code requires the seller to notify each tenant that their deposit is being transferred to the new owner
This is one more reason a clean rent roll matters before you write an offer. Why investors are buying multi-unit properties in LA County right now comes back partly to this: the documentation you receive at close determines how cleanly you can operate the asset from day one.
Income and Expense Statements (Optional)
One of the checkbox items on the TOPA is whether the seller will provide income and expense statements — specifically, the books and records for the property including a statement of income and expenses for the 12 months preceding acceptance.
This is optional, but I almost always recommend checking this box when negotiating. Here's why: the rent roll the seller provides in the rental statement tells you what tenants are paying and what the deposits look like. The income and expense statement tells you what the property actually costs to operate — utilities, maintenance, management fees, insurance, and any other carrying costs the seller has been running through the property.
Without this, you're underwriting on gross income alone. With it, you can model real net operating income and stress-test the cash flow before you remove contingencies. For DSCR loans on multi-unit investment properties, lenders are underwriting on the property's actual income and expenses — so having this documentation early also helps your financing move faster.
The TOPA also confirms that seller represents these documents are those maintained in the ordinary course of business and used in computation of federal and state tax returns. That's meaningful — it's a representation that what you're seeing is the real picture, not a number constructed for the sale.
Tenant Estoppel Certificates (Optional)
The other key checkbox item is the Tenant Estoppel Certificate (C.A.R. Form TEC). This is a document completed by the seller or seller's agent and then delivered to the tenant for the tenant to sign, acknowledging:
That their rental or lease agreement is unmodified and in full force and effect (or if modified, stating exactly what changes were made)
That no lessor defaults exist — meaning the landlord hasn't violated the lease
The exact amount of any prepaid rent or security deposit they've paid
Why does this matter? Because sometimes what's in the lease on paper and what's actually happening between landlord and tenant have drifted apart. Maybe the landlord verbally agreed to lower the rent for a few months. Maybe there's an informal side agreement about parking or utilities. The estoppel certificate is the tenant's direct confirmation that the written lease is the operative agreement — no hidden modifications, no claims the landlord is in default, no undisclosed prepaid amounts.
One important caveat: the seller must exercise good faith to get the tenant to sign, but cannot guarantee cooperation. If a tenant refuses to sign, the seller must still notify you and provide the unsigned certificate. If a tenant signs and returns it after the delivery deadline, the seller is required to forward it to you.
For any property where you're what you need to know before buying a property with an existing ADU — especially one where tenants have been in place for years — an estoppel certificate is one of the cleaner ways to get direct, signed confirmation from the tenant themselves about the state of the tenancy.
Permits: Ask for Everything
Under the TOPA's seller documentation requirements, if permits are in the seller's possession, the seller shall deliver to you copies of all permits and approvals — including certificates of occupancy, conditional use permits, development plans, and any licenses pertaining to the operation of the property.
This matters enormously on ADU and multi-unit properties. An ADU that was built without permits, a garage conversion that was never signed off, a unit addition that doesn't have a certificate of occupancy — these are all issues that surface at appraisal, at financing, and at your eventual resale. An unpermitted ADU gets treated very differently at appraisal — lenders may not be able to count the income, and buyers may not be able to use conventional financing when you go to sell.
The permit delivery requirement in the TOPA doesn't force the seller to go obtain permits they don't have — it's limited to what's in their possession. But it does create a disclosure obligation, and if permits don't show up, that's a flag that needs to be investigated during your contingency period. Pull the property's permit history through the city yourself. The California HCD ADU handbook outlines what proper permitting looks like under state law — which sets the floor that every city must meet.
Proposed Changes: Lease Modifications Before Close
One underappreciated protection in the TOPA: if the seller wants to make any changes to existing leases, enter new rental agreements, or change the condition of the property before close, they must give you at least 7 days' written notice before making those changes. You then have 5 days to object — and if you do, the seller cannot proceed.
This protects you from a seller who might try to lower rents to help a friend, lock in a new tenant on unfavorable terms, or quietly change lease conditions between acceptance and close. On multi-unit deals especially, the rent roll you underwrote should be the rent roll you receive at close.
Government Compliance and the Rent Cap/Just Cause Layer
The TOPA is explicit that no warranty is made about compliance with rent control, occupancy limits, or your ability to remove tenants. If California's Tenant Protection Act applies — which it does for many multi-unit properties that are more than 15 years old and not owner-occupied — there are real limits on how much you can raise rents and what qualifies as just cause for eviction.
The TOPA references the Rent Cap and Just Cause Addendum (C.A.R. Form RCJC-TOPA) as an additional form to review. Your agent should walk you through this before you go under contract, not after. The Long Beach multi-unit market in 2026 is one example where understanding tenant protections going in determines whether the investment thesis actually holds up.
Local ordinances can layer on top of state law and be more restrictive. This is especially true in cities like LA, where the RSO (Rent Stabilization Ordinance) applies to buildings built before 1978. Always verify local rules for the specific city before you close.
The Bottom Line
Buying a tenant-occupied property — whether it's a duplex with an in-law unit, a triplex in Anaheim, or a Long Beach fourplex with an ADU already built in — is a fundamentally different transaction than buying an empty house. The TOPA is the form that structures that difference into the contract. Understanding what it requires from both sides — deposits through escrow, income documentation, estoppel certificates, permit disclosure, proposed change notifications — puts you in a much stronger position as a buyer.
If you want to understand how properties like these are valued when you eventually go to sell, or how documented rental income flows into your mortgage qualification and financing options, those are conversations worth having before you write the offer — not after you're in escrow.
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Call or text Dylan Serna to schedule an investor consult at (714) 860-2868
