House hacking means buying a duplex, triplex or fourplex, living in one unit and renting out the others. Because you live there, you can use owner occupied financing, which means a far smaller down payment and a lower rate than an investor loan, while your tenants help cover the mortgage. Here is how it works in Southern California in 2026, including the loan limits, the rental income rules and the tests that trip up buyers.
Quick answer
You can buy a two to four unit property you will live in with 3.5% down using an FHA loan (580 or higher credit score), with no down payment using a VA loan if you have full entitlement, or with 5% down using a conventional loan when the loan stays within the baseline limit for the unit count. In Orange and Los Angeles counties, 2026 FHA limits reach $1,599,375 for two units, $1,933,200 for three and $2,402,625 for four. Three and four unit FHA purchases must also pass a self sufficiency test, and every option requires you to actually move in.
Why does house hacking work so well in Southern California?
High prices make a first rental hard to buy with investor financing, which requires 25% down on a two to four unit property. House hacking changes the math in two ways. The down payment falls to between zero and 5% because the loan is owner occupied, and the rent from the other units offsets part of your payment and can count toward qualifying.
It also builds the landlord experience that lenders look for when you buy your next rental. After meeting the occupancy requirement, many owners move out, keep the loan in place and rent the unit they lived in. Our investment property loan guide covers what changes when you buy a property you will not live in.
Which loans let you buy a multi unit home with a low down payment?
| Loan | Minimum down payment | What to watch |
|---|---|---|
| FHA | 3.5% with a 580+ credit score | Three and four unit homes must pass the self sufficiency test and need three months of reserves. Mortgage insurance stays for the life of the loan with less than 10% down. |
| Conventional | 5% when the loan is within the baseline limit | High balance loans are capped at 85% loan to value for two units and 75% for three and four units. Six months of reserves are required. |
| VA | None with full entitlement | No VA loan limit with full entitlement. To count future rent, lenders generally look for reserves and some landlord or property management background. |
Why the baseline limit matters for conventional loans
Fannie Mae has allowed 5% down on owner occupied two to four unit homes since November 2023, and Freddie Mac followed in September 2025. Both exclude high balance loans, the loans above the national baseline limit that are only available in high cost counties. For 2026 the baseline limits are $1,066,250 for two units, $1,288,800 for three and $1,601,750 for four. In Orange and Los Angeles counties, where many duplexes cost more than that, a conventional loan above the baseline needs at least 15% down on a duplex and 25% on a triplex or fourplex. That is why FHA is usually the low down payment route in coastal Southern California.
What are the 2026 loan limits for two to four units in Southern California?
These are the 2026 conforming loan limits set by the Federal Housing Finance Agency. In Orange and Los Angeles counties, the 2026 FHA limits are the same because both counties sit at the national ceiling.
| County | Two units | Three units | Four units |
|---|---|---|---|
| Orange | $1,599,375 | $1,933,200 | $2,402,625 |
| Los Angeles | $1,599,375 | $1,933,200 | $2,402,625 |
| San Diego | $1,413,350 | $1,708,400 | $2,123,100 |
| Riverside | $1,066,250 | $1,288,800 | $1,601,750 |
| San Bernardino | $1,066,250 | $1,288,800 | $1,601,750 |
In Riverside and San Bernardino counties the conforming limit equals the baseline, so every conforming loan there qualifies for the 5% down option. FHA limits in San Diego, Riverside and San Bernardino counties are set separately by HUD and can be lower than the figures above, so confirm the FHA limit for your county before you shop.
How does the rent from the other units help you qualify?
Lenders typically count 75% of the rent from the units you will not live in. The rent comes from existing leases or from the appraiser’s market rent survey on Form 1025, and the 25% reduction allows for vacancy and upkeep.
Example: Say you buy a $900,000 duplex in Riverside County with 5% down. Your down payment is $45,000 and your loan is $855,000, below the $1,066,250 baseline limit for two units. If the other unit rents for $2,600 a month, a lender would typically count 75% of it, or $1,950, when it calculates whether you qualify. You will also need closing costs and six months of reserves.
If you have never been a landlord, the rent may be limited to offsetting the property’s own payment rather than adding to your income, and VA lenders in particular look for some property management background. Ask your loan officer how your experience affects the calculation before you set a price range.
A single family home with an accessory dwelling unit is usually treated as a one unit property, not a duplex, and the rules for counting ADU rent are different. If you are comparing a house with an ADU against a duplex, have both priced.
Deciding between FHA and conventional?
John can price both on the same property and show you the cash to close, the payment and how much of the rent counts toward qualifying.
How does the FHA self sufficiency test work?
For three and four unit properties, FHA adds a test the property itself has to pass. Take the appraiser’s estimate of fair market rent for every unit, including the one you will live in, and multiply by 75%. The result has to be at least equal to the full monthly payment, including principal, interest, taxes, insurance, FHA mortgage insurance and any HOA dues.
Example: A fourplex where each unit has a market rent of $2,400 produces $9,600 a month. 75% of that is $7,200, so the full monthly payment must be $7,200 or less for the property to pass.
In high priced areas this test is often what limits the purchase price, not your income. If a three or four unit property does not pass, a larger down payment, a lower price or a conventional loan may still make it work. Two unit properties do not have to pass the test.
What occupancy and rent rules should you know?
- You have to live there. FHA requires at least one borrower to move in within 60 days of closing and live there for at least one year. Conventional and VA loans also require that you buy the home as your primary residence. Claiming occupancy you do not intend is mortgage fraud.
- One FHA loan at a time. FHA generally insures only one primary residence loan per borrower, with limited exceptions such as a job relocation or a growing family. Plan how you will finance your next home before you move out.
- Statewide rent limits. California’s Tenant Protection Act caps yearly rent increases for many older units. A tenancy in a duplex within a single building is exempt if the owner lived in the other unit when the tenancy began, but triplexes and fourplexes are not, so check the status of any tenant already in place. The law is currently set to expire on January 1, 2030.
- Local rules. Los Angeles, Santa Ana and several other cities have their own rent stabilization or just cause rules. Check the city before you buy.
- Existing leases stay in force. Tenants in place when you buy keep their leases. Review every lease and ask for signed tenant estoppel certificates confirming rent, deposits and terms.
Steps to your first house hack
- Pick your target areas. Compare prices, rents and the loan limits for two, three and four units in each county.
- Get preapproved for the right program. Ask for FHA, conventional and, if you have served, VA scenarios on the same price.
- Check the self sufficiency math early. For three and four unit properties, estimate 75% of total market rent and compare it with the full payment before you write an offer.
- Budget for the building. Multi unit homes carry more roofs, water heaters and appliances. Keep reserves beyond the minimum.
- Review leases and rent rules. Confirm current rents, deposits, rent control status and any repairs tenants have requested.
- Plan your move in. Line up your own unit so you can occupy within the time your loan requires.
Frequently asked questions
Can I buy a fourplex with an FHA loan?
Yes. FHA allows properties with up to four units as long as you live in one of them. The minimum down payment is 3.5% with a credit score of 580 or higher, and a three or four unit property must pass the self sufficiency test and you need three months of reserves.
How much do I need to put down on a duplex in Orange County?
As little as 3.5% with an FHA loan up to the 2026 limit of $1,599,375. A conventional loan allows 5% down only if the loan stays at or below $1,066,250. Above that, the loan is high balance and needs at least 15% down.
How long do I have to live in the property?
With an FHA loan, at least one borrower must move in within 60 days of closing and live there for at least one year. Conventional and VA loans also require that you intend to live there as your primary residence.
Can the rent from the other units help me qualify?
Yes. Lenders typically count 75% of the rent from the units you will not occupy, based on leases or the appraiser’s market rent survey. If you have no landlord history, the rent may only offset the property’s own payment.
Does a house with an ADU count as a duplex?
Usually not. Most lenders treat a single family home with an accessory dwelling unit as a one unit property, which follows different loan limits and rental income rules than a duplex.
Can I house hack with a VA loan?
Yes. Eligible veterans and service members can buy a property with up to four units with no down payment if they have full entitlement and live in one unit. To count the rent, lenders generally look for reserves and some landlord or property management experience.
John Goodpaster
Senior Managing Director, ARBOR Financial Group. More than 20 years in mortgage banking, specializing in investment property financing in Southern California.
NMLS #230125
DRE #01259719
Licensed in California
Buying your first duplex, triplex or fourplex?
Find out which properties you can buy with the least cash down.
John Goodpaster can compare FHA, conventional and VA options for the same property, check the self sufficiency math and show you the full cash to close.
Sources and official resources
- HUD: 2026 FHA forward mortgage limits
- FHFA: Conforming loan limit values for 2026
- FHFA: 2026 county loan limit list (XLSX)
- Fannie Mae: Eligibility Matrix
- Fannie Mae Selling Guide: Rental income from the subject property
- HUD: Single Family Housing Policy Handbook 4000.1
- VA: Home loan eligibility
- California Civil Code section 1947.12 (Tenant Protection Act)
Information checked September 27, 2026. Loan limits, program rules and assistance funding change, so confirm current terms before you rely on them.
This article is for general education only and is not a loan offer, commitment to lend, or tax or legal advice. Rates, terms, fees and programs vary by lender and are subject to change without notice. All loans are subject to credit approval, underwriting guidelines and property eligibility. John Goodpaster, NMLS #230125, DRE #01259719. ARBOR Financial Group is a DBA of The Turnkey Foundation Inc., NMLS #236669 (NMLS Consumer Access). Equal Housing Opportunity.
