HELOC on a duplex, triplex or fourplex you live in: limits, rent and a $100,000 example
Yes, you can get a HELOC on a duplex, triplex or fourplex, and if you live in one of the units, many lenders treat it as your primary residence rather than a rental. That usually means a higher borrowing limit and a lower rate. One Northern California credit union, for example, lends up to 80% of the value (counting your mortgage) on owner-occupied one- to four-unit homes, and 70% when the owner lives elsewhere.
Below are the limits by occupancy, how rent from your other units can help you qualify, a $100,000 example on a $600,000 duplex, and what the appraisal looks at. LenderMatch lets you describe the property once and compare the offers lenders make.
Can you get a HELOC on a duplex you live in?
A HELOC (home equity line of credit) is a revolving line secured by your home. You draw what you need during a draw period, often 10 years, and pay interest on what you use. See how a HELOC works for the basics.
Lenders sort property by two things: how many units it has and whether you live there. A two- to four-unit home where you occupy one unit is still your home. Fannie Mae and Freddie Mac call it a principal residence, and many HELOC lenders follow the same split. A building where you rent out every unit is an investment property, with tighter terms covered in HELOC on an investment property.
The usual checks from HELOC requirements still apply: credit score, debt-to-income ratio (DTI) and equity. What changes is the limit, the rate, and that rent from your other units can count.
HELOC on owner-occupied vs investment multi-family
Here is how occupancy changes the numbers at the agencies and at one lender that publishes its terms:
| Limit | You live there | Rental |
|---|---|---|
| Northern California credit union, HELOC max CLTV (1 to 4 units) | 80% | 70% |
| Freddie Mac cash-out refinance, 2 to 4 units | 75% | 70% |
| Freddie Mac cash-out refinance, 1 unit | 80% | 75% |
CLTV is combined loan-to-value: all loans on the home divided by its value. The credit union’s terms are effective October 22, 2026 and may be lower based on credit. Freddie Mac’s figures are its maximums for conforming first mortgages, accessed October 22, 2026.
Two patterns show up. First, living in the building is worth about 10 percentage points of CLTV at the credit union. Second, the agencies trim the limit for multi-unit homes even when you live there: 75% on a two- to four-unit cash-out refinance against 80% on a single-family home. HELOC lenders set their own caps, so some apply one limit to one to four units and others lower it for multi-unit homes.
Rates follow the same split. The same credit union’s fixed home equity loans run 6.99% to 10.69% APR on owner-occupied homes and 8.99% to 12.69% on non-owner-occupied ones (effective October 22, 2026). Most HELOCs are variable and priced off the prime rate, 7.00% (unchanged since September 17, 2026). Track it on our prime rate page.
Does rental income count for a HELOC on a duplex?
Often, yes. HELOC lenders write their own income rules, and Fannie Mae’s Selling Guide (B3-3.8-02, September 2, 2026) is a useful reference for how rent from a two- to four-unit home is counted:
- Lease or rent schedule. The lender takes 75% of the gross monthly rent. The other 25% allows for vacancies and upkeep.
- Subtract the full payment. The lender subtracts the property’s full monthly payment: principal, interest, taxes, insurance and any association dues (PITIA).
- Schedule E. If the property is already on your tax return, the lender can work from the cash flow on Schedule E instead.
- Positive or negative. With 12 or more months of experience managing rentals, a positive result can be used in full. With less, it can offset the payment only. A negative result is added to your monthly debts.
On a duplex you live in, the result is usually negative, because the payment covers your own unit too. That is fine. The rent still shrinks the amount the lender counts against you, as the example below shows.
Worked example: a $100,000 line on a $600,000 duplex
Say you live in one side of a duplex worth $600,000 and owe $350,000. The other side rents for $2,000 a month, your full payment (PITIA) is $3,100, your gross income is $9,500 a month, and you have a $400 car payment.
| CLTV cap | Max total debt | Line |
|---|---|---|
| 80% (owner-occupied) | $480,000 | $130,000 |
| 75% | $450,000 | $100,000 |
| 70% (if it were a rental) | $420,000 | $70,000 |
Say you take a $100,000 line, inside every owner-occupied cap above.
The payment. At an assumed 8.00% (the 7.00% prime rate plus a 1.00% margin, for illustration), $100,000 drawn in full costs about $667 a month interest-only. If the repayment period is 20 years, the payment at the same rate is about $836.
The rent math. $2,000 × 75% = $1,500. Minus the $3,100 payment, that leaves a $1,600 shortfall, which the lender counts as your housing cost. Add the $667 HELOC payment and the $400 car payment and your monthly debts are $2,667.
| Scenario | Monthly debts | DTI |
|---|---|---|
| Before the HELOC, rent counted | $2,000 | 21.1% |
| With the HELOC, rent counted | $2,667 | 28.1% |
| With the HELOC, rent not counted | $4,167 | 43.9% |
The rent from the other unit is the difference between a 28% DTI and a 44% one. That is why a signed lease or a rent schedule from the appraiser matters on a multi-family application.
Calculated by LenderMatch. The rate and property figures are assumptions for illustration; variable rates change.
Run your own numbers in the home equity calculator and the HELOC payment calculator.
Can you get a HELOC on a triplex or fourplex?
Yes, though your choices narrow as the unit count rises. The Northern California credit union above lends on one- to four-unit owner-occupied homes. A Southern California credit union, by contrast, limits its owner-occupied home equity lending to single-family homes, townhouses, condos and two-unit properties, so a triplex or fourplex would not qualify there.
The agencies tighten too. On a purchase or no-cash-out refinance of a home you live in, Freddie Mac allows up to 95% loan-to-value on two to four units with its automated approval, but manually underwritten loans stop at 85% for two units and 80% for three and four. Fannie Mae’s and Freddie Mac’s single-family rules cover one to four units, so a building with five or more units falls outside them.
Appraisal on a 2-4 unit home: Form 1025
A multi-family appraisal values the building and also its rents. Fannie Mae’s report for these homes has been Form 1025, the Small Residential Income Property Appraisal Report, which a lender can use in place of the separate Form 1007 rent schedule. The appraiser compares your property with nearby sales and with rents on similar units, and the lender may use that estimate to support the rent, especially when there is no lease.
Fannie Mae and Freddie Mac are retiring Form 1025 and their other appraisal forms in favor of a redesigned report, required for new appraisal reports delivered to them on or after November 2, 2026. Some HELOC lenders use an automated value instead of a full appraisal; see HELOC without an appraisal.
Is HELOC interest on a duplex tax deductible?
It can be, in part. IRS Publication 527 (2025) says that if you rent part of your property, you divide expenses such as mortgage interest between the rental part and the personal part, “as though you actually had two separate pieces of property.” The two most common ways to divide are by number of rooms or by square footage. The rental share goes on Schedule E.
For the part you live in, Publication 936 says HELOC interest is deductible as home mortgage interest only if the money buys, builds or substantially improves the home. The full rules are in is HELOC interest tax deductible, and a tax professional can confirm your case.
HELOC or cash-out refinance on a multi-family home?
A cash-out refinance replaces your mortgage with a bigger one. On a two- to four-unit home you live in, Fannie Mae and Freddie Mac cap it at 75% loan-to-value. A HELOC leaves your first mortgage alone, which matters if its rate is well below today’s: Freddie Mac’s 30-year fixed average was 7.32% for the week of October 22, 2026. Compare both in cash-out refinance vs HELOC. If you move out and rent every unit, the rental rules in cash-out refinance on an investment property apply instead.
Before you apply, gather your current leases, your recent tax returns with Schedule E if the building is on them, your mortgage statement and proof of insurance. Say up front that you live in one unit, since many lenders price an owner-occupied home differently from a rental.
Frequently asked questions
Can you get a HELOC on a duplex?
Yes. If you live in one of the units, many lenders treat a duplex as your primary residence, which usually means a higher borrowing limit and a lower rate than on a rental. One Northern California credit union lends up to 80% combined loan-to-value on owner-occupied one- to four-unit homes and 70% on non-owner-occupied ones.
Is a duplex I live in an investment property?
Not for most lending purposes. Fannie Mae and Freddie Mac treat a two- to four-unit home you live in as a principal residence, with its own limits. Freddie Mac allows up to 75% loan-to-value on a cash-out refinance of a two- to four-unit primary residence, against 70% when you don’t live there.
Does rental income count when applying for a HELOC?
Often, though each HELOC lender sets its own rules. Under Fannie Mae’s mortgage rules, the lender takes 75% of the gross rent and subtracts the property’s full monthly payment. A shortfall counts as a debt, so rent from your other units lowers what the lender counts against you.
Can you get a HELOC on a fourplex?
Yes, but fewer lenders offer one. Some HELOC programs cover one to four units, while others stop at two. One Southern California credit union limits its owner-occupied home equity lending to single-family homes, townhouses, condos and two-unit properties.
Is HELOC interest on a duplex tax deductible?
Possibly, in part. IRS Publication 527 says that if you rent part of your property, you divide expenses such as mortgage interest between the rental part and the personal part. How you use the HELOC money also matters, so ask a tax professional about your situation.
Does LenderMatch check my credit?
No. LenderMatch never pulls your credit. A lender you choose may check it, with your permission, when you apply.
Compare HELOC offers on your multi-family home →
Sources
- Fannie Mae Selling Guide, B3-3.8-02 “Rental Income from the Subject Property” (September 2, 2026).
- Fannie Mae, Eligibility Matrix (August 5, 2026).
- Freddie Mac, “Maximum LTV/TLTV/HTLTV Ratio Requirements for Conforming and Super Conforming Mortgages” (accessed October 22, 2026).
- Freddie Mac, “Uniform Appraisal Dataset (UAD) 3.6 FAQ” (accessed October 22, 2026).
- Freddie Mac, Primary Mortgage Market Survey: 30-year fixed 7.32% (week of October 22, 2026).
- A Northern California credit union’s home equity financing page: property types, CLTV limits and rates (rates effective October 22, 2026).
- A Southern California credit union’s home equity line and loan rates and terms sheet (rates effective October 22, 2026).
- Federal Reserve, H.15 Selected Interest Rates: bank prime loan rate 7.00% (unchanged since September 17, 2026).
- IRS, Publication 527 (2025), Residential Rental Property, and Publication 936 (2025), Home Mortgage Interest Deduction.
Examples are illustrations, not offers or approvals. Last reviewed October 22, 2026.