The Quick Read: The best program for a fully leased duplex depends on lien position, combined leverage, credit tier, and how much of the line the rent can carry. A DSCR HELOC is a revolving line secured by a rental and qualified on the property’s rent, subject to lender guidelines.
- Rent qualifies the line, not personal income: no traditional personal-income documentation, W-2s or personal income calculation, subject to underwriting.
- Programs in Lendmire’s network are written as a standalone second lien behind your first mortgage, or a standalone first lien on a paid-off rental.
- The coverage test typically uses a 1.10x minimum on a stress payment sized to the entire credit limit, not the drawn balance.
- A lease in place is required, and a duplex may have at most 1 vacant unit.
- Available through select programs in only some of Lendmire’s licensed states, so availability depends on the property’s state and the program.
A fully leased duplex is a clean file. Two leases, two income streams, and a rent schedule an appraiser can check. But “fully leased” does not settle the question by itself. Line size, existing debt, and credit tier decide how much equity the rent can support.
Lendmire is a mortgage broker, not a lender. It places these lines through a wholesale lender in its network, so the best program for your situation is a matching exercise, not a brand pick. The sections below show how the matching works. For the wider picture, see the complete DSCR loans guide.
Key Terms Defined
- DSCR HELOC: a revolving line of credit on a non-owner-occupied rental, qualified on the property’s rent rather than the owner’s income.
- DSCR (debt-service coverage ratio): gross monthly rent divided by the qualifying payment.
- Stress payment: a fully amortizing payment on the entire credit limit, calculated at a higher test rate than the start rate.
- CLTV: combined loan-to-value, meaning the first mortgage balance plus the new line, divided by value.
- Draw period: the window when you can borrow against the line, interest-only on the drawn balance.
- Rent roll: the unit-by-unit list of tenants, leases and rents.
What Is a DSCR HELOC on a Duplex?
It is a revolving line of credit secured by a rental you keep. The Consumer Financial Protection Bureau describes a HELOC as open-end revolving credit with a draw period and payments based on the balance. The DSCR version changes who gets tested. The property takes the test, not your pay stubs.
“DSCR HELOC” is a market label, not a single standard product. Terms differ from one lender to the next. The figures here describe select programs in Lendmire’s network, and every file is underwritten individually.
Two structures exist:
1. Standalone second lien. The line sits behind the first mortgage you keep. Your existing first mortgage stays untouched.
2. Standalone first lien. The line is the only loan on a rental with no mortgage.
It is never closed together with a purchase, never a third lien, and never a line on your own home or a second home. If you live in one unit of the duplex, this product does not apply.
How Underwriting Treats a Fully Leased Duplex, Step by Step
The deal works through the same checks on most programs we place:
1. Eligibility. The property must be a non-owner-occupied rental in an eligible state. Duplexes are eligible property types.
2. Rent figure. Rent is the lesser of the appraiser’s market rent or the lease. The market rent comes from a rent schedule, Form 1007. For two-to-four unit properties, the appraisal is typically Form 1025, as described in the Fannie Mae Selling Guide. A lease above market counts only with three months of receipts.
3. Qualifying payment. The lender sizes a fully amortizing payment on the whole credit limit at the start rate plus 2 percentage points. That is a stress test, so the payment is larger than what you would pay on a partial draw.
4. Coverage test. Gross monthly rent divided by that payment must reach 1.10x, subject to underwriting.
5. Leverage check. CLTV or LTV must fit the credit tier.
6. Credit and history. No 30-day mortgage late in the last 12 months, and 48 months since a bankruptcy, foreclosure, short sale or deed-in-lieu.
7. Valuation and title. Covered below.
One point trips up investors. Whether the first-mortgage payment joins the qualifying payment on a second lien is not published for this program. The lender’s own coverage calculation governs, so ask before you assume.
What “Fully Leased” Proves, and What It Doesn’t
Full occupancy proves the rent exists. It does not prove the rent counts.
- Below-market leases. If the lease sits under market rent, the lease number is the one used.
- Above-market leases. A lease above market is counted only with three months of receipts.
- Lease quality. Underwriters want a lease in place for each unit. A handshake tenancy or a lease nearing expiration invites questions.
- Vacancy limits. A two-to-four-unit property may have at most 1 vacant unit. On a duplex, that means one empty unit is the ceiling, and it leaves only one rent in the numerator.
Why does the duplex feel vacancy more than a fourplex? Lose one unit and you lose half your rent. Lose one of four and you lose a quarter. The coverage test is far more forgiving on the larger building.
Why a Bigger Line Lowers Coverage
The stress payment is sized to the full limit. Take two lines on the same duplex with the same rent. The larger limit produces a larger qualifying payment, so the coverage ratio drops, even if you plan to draw only part of it.
Picture a duplex whose rent clears roughly 1.3x on a smaller line. Raise the limit enough and the same rent can slide toward 1.1x or below. The test would then fail on the larger line, even though nothing about the property changed. Consider that when you pick a line size. Asking for the full equity available is often the wrong move.
Remember the draw rules too. At least 80% of the line, and never less than $50,000, is drawn at closing. Later draws are at least $5,000 each. A line that is “standby only” is not what this product does.
Second Lien vs. First Lien: Which Fits Your Duplex?
Your existing mortgage decides the structure.
| Factor | Second lien | First lien |
|---|---|---|
| Existing mortgage | You keep it | None on the property |
| Leverage cap | 70% CLTV | Up to 75% LTV |
| Credit floor | 720 | 700 |
| Line size | $50,000 to $500,000 | $50,000 to $1,000,000 |
On a second lien, 740 or better and 720 to 739 both reach 70% CLTV, subject to underwriting. Below 720 there is no second-lien option.
On a first lien, 740 or better reaches 75% LTV on lines to $500,000. A score of 720 to 739 and one of 700 to 719 each reach 70% LTV. Lines above $500,000, up to $1,000,000, are capped at 65% LTV at 720 or better. A declining-market flag lowers any ceiling by 5 points. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.
The practical takeaway: a landlord with a low-cost first mortgage often prefers the second lien. It leaves the first mortgage alone. A landlord with a paid-off duplex has the more flexible first-lien menu.
Valuation, Title and Seasoning
For lines up to $400,000, the program uses an automated valuation with a property inspection report, or a full interior appraisal. Lines above $400,000 take a full interior appraisal on Form 1004, 1073 or 1025. Appraisal waivers are not accepted. Title work is a full policy on a first lien and on second liens above $400,000, and an owner-and-encumbrance report on smaller second liens.
A rental bought or refinanced inside the last 6 months is not eligible (that clock runs from the last note date to the new note date), and the owner must have held title for 6 months (settlement date to note date).
Structuring Choices: LLC, Borrowers and Exposure
An LLC can stay on title, subject to program terms, on investment property. The members sign as guarantors. A title holder who is not a borrower signs a non-borrowing owner acknowledgment and the security instrument. The borrowers on the line need not match the borrowers on the first mortgage.
Eligible borrowers are US citizens, permanent residents, and non-permanent residents with a Social Security number. Foreign nationals and ITIN borrowers are not eligible. No reserves and no cash to close are required, and exposure is capped at 5 loans or $2,500,000 per borrower with the program.
DSCR HELOC vs. Cash-Out Refinance vs. Fixed Second
Each tool fits a different goal on a leased duplex.
| Goal | Fits best | Why |
|---|---|---|
| Keep a low-cost first mortgage | DSCR HELOC (second lien) | First mortgage stays in place |
| Draw equity over time | DSCR HELOC | Revolving draws, interest-only draw period |
| Replace the first mortgage and pull equity | DSCR cash-out refinance | One new loan on the property |
| One lump sum, fixed schedule | Closed-end second | Not a revolving line |
The line carries a 5-year interest-only draw period on the drawn balance, then a 25-year fully amortizing repayment period, for a 30-year maturity. The rate is variable. A refinance is the better call if your first mortgage has a poor structure you want gone anyway. The line is the better call if that first mortgage is one you would never replace.
If you are weighing a bank statement route instead, Lendmire’s piece Best Bank Statement HELOC Program With All Other Units Leased covers that path.
Who Should Skip This Product
- Live-in duplex owners. This line is never offered on an owner-occupied home.
- Thin coverage. If rent barely clears 1.10x on a smaller line, a larger line will not pass.
- Borrowers below the credit floors. Second liens need 720, first liens 700.
- Ineligible properties. Rural-designated property, row homes, condotels, leaseholds, land trusts, mixed-use, a property listed for sale in the prior 2 months, and a property with a solar lien fall outside this lane.
- Anyone wanting a standby line. The 80% draw at closing makes this a funded product, not a safety net.
- Residents of Tennessee, Massachusetts, New York and West Virginia. The program is not offered there.
What to Gather Before You Apply
- Signed leases for both units and a current rent roll
- The first-mortgage statement, if you keep a first lien in place
- Entity documents and guarantor details if an LLC holds title
- Proof of the title and note dates for the seasoning check
- A plan for how you will use the funds
Risks and Trade-Offs
The rate is variable, so your cost can move. Your duplex secures the line, so missed payments put the property at risk. Drawing most of the line on day one means interest cost starts early. Coverage also erodes as the balance grows over time, and a unit going vacant can change the picture fast. Use the figures above as ceilings and floors, never as offers. Tax treatment varies; consult a qualified professional.
Frequently Asked Questions
Can I get a DSCR HELOC on a duplex I rent entirely?
Yes, through select programs, if both units are leased and the property is non-owner-occupied. A lease is required, the duplex may have at most 1 vacant unit, and the file is subject to underwriting and lender guidelines.
Does a lease on both units help?
It supports the rent figure, but the lender uses the lesser of the lease or the appraiser’s market rent.
What if one unit is empty?
A two-to-four-unit property may have at most 1 vacant unit. With only one rent counted, coverage falls sharply on a duplex, so the 1.10x test is harder to clear.
Can the duplex be in an LLC?
Yes, subject to program terms. The members sign as guarantors, and a non-borrowing title holder signs an acknowledgment and the security instrument.
Next Step
If you are considering a home equity line on a rental property and want to see how the numbers work, Lendmire can help you compare DSCR HELOC options based on the property, the rent, the equity available, credit profile, combined leverage, and your goals. Reach the team at 828-256-2183 or request a quote at Lendmire. Two leased units make a strong file, but the line size you choose decides whether it clears.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage broker. Home equity lines of credit — on a primary residence, a second home or an investment property — are arranged through wholesale lenders in Lendmire’s 16 full-service states, and every line is underwritten by the lender under its program guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
Get Started
Ready to find the right loan for you?
See your offer in seconds. No credit pull, no obligation.
Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
1. CFPB: What Is a Home Equity Line of Credit HELOC
This article is part of Lendmire’s DSCR HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Best DSCR HELOC Program to Speed Up a BRRRR Cycle · Best DSCR HELOC Program on an Airbnb · Best DSCR HELOC Program When Your Bank Says No to an LLC
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Required disclosures. Lendmire (NMLS# 2371349) operates as a licensed mortgage broker, not a direct lender or depository. The discussion in this article is general in nature and should not be relied upon as financial, legal, or tax advice — every investment scenario is unique and should be reviewed by a qualified professional. Any loan inquiry is subject to lender underwriting, and this article is not a commitment to lend or a guarantee of approval. Mortgage rates, loan terms, and program guidelines vary by borrower, property, and state, and may change without notice. Equal Housing Opportunity. Verify licensure at NMLS Consumer Access.