The Quick Read: For most landlords with a cheap first mortgage, the right fit is a standalone second lien on the rental, qualified on the rent at a 1.10x minimum coverage, which leaves the first mortgage untouched and taps only the equity left under a 70% combined loan-to-value cap, subject to underwriting. Which program fits depends on your credit score, the first mortgage balance, and the property itself.
- The line qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. It does not rely on traditional personal-income documentation, W-2s or a personal income calculation.
- Your first mortgage’s balance and payment count in the math. Its interest rate does not.
- A second lien needs a 720 credit score or better, and lines run from $50,000 to $500,000 through select programs.
- A big first mortgage can leave no room, even when the rate on it is excellent.
- If the first balance is large, the score is under 720, or the need is big, a cash-out refinance may fit better.
What Is a DSCR HELOC?
A DSCR HELOC is a revolving line of credit on a rental you keep, qualified on the rent instead of your paycheck. DSCR stands for debt service coverage ratio: the rent divided by the payment the lender uses to test the loan. The line is secured by the rental itself.
The label is loose, and it covers three different structures:
1. A revolving line (the HELOC). You draw, repay, and draw again within set limits.
2. A closed-end second. You get one lump sum and it starts amortizing right away.
3. A cash-out refinance. This pays off your old first mortgage and replaces it with a new, larger one.
The program described here is the first kind. It is a standalone second lien behind the first mortgage you keep, or a standalone first lien on a rental with no mortgage. It is never a third lien. It is never a line on your own home or a second home, and it is never closed together with a purchase. You buy the rental first and open the line later.
DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage.
Across Lendmire’s wholesale network, this is a narrow lane. Few lenders write a second lien on a rental at all, and large retail lenders often decline second position on investment property. That is why a broker who can shop several programs matters more here than on a standard rental purchase. For the wider picture, Lendmire’s complete DSCR loans guide covers how these loans work from the start.
Why Keep the Low First Mortgage?
You keep a cheap first mortgage because a second lien reprices only the new money. A cash-out refinance reprices the entire balance. If your existing first sits well below what a new loan would cost, replacing it means paying more on every dollar you already owe.
Take an owner with a first mortgage that is decades into repayment and cheap by today’s standards. A cash-out would trade that loan for a new one. A second lien leaves it alone and adds a separate loan for the equity.
This is the logic behind the whole program. It is also where investors trip up. They assume a low rate on the first helps them qualify for the second. It does not, as the next sections show.
How Underwriting Treats It, Step by Step
Underwriting runs in a set order, and each step can end the file. Here is how it works on the programs in Lendmire’s network, subject to underwriting.
1. Lien position. The line sits second behind the first you keep, or first on a paid-off rental. The borrowers on the line do not have to match the borrowers on the first mortgage.
2. The first mortgage is read for balance and payment. The lender cares how much you owe and what you pay on it. The rate on it does not count. A low rate on a large balance can leave less room than a higher rate on a small balance.
3. Combined loan-to-value. Combined loan-to-value (CLTV) is the first mortgage balance plus the new line, divided by the property’s value. On a second lien the cap is 70% CLTV at a 720 credit score or better.
4. The coverage test. The minimum coverage is 1.10x. Gross monthly rent is divided by a stress payment. That payment is fully amortizing on the entire credit limit at the start rate plus 2 percentage points, even if you have drawn only part of it.
5. Rent used. The lender uses the lesser of the appraiser’s market rent (Form 1007) or the lease. A lease above market can count with three months of receipts. A lease in place is required. A two-to-four-unit property can have at most one vacant unit.
6. Credit and history. The tier comes from the lender’s own credit report. There can be no 30-day mortgage late in the last 12 months. After a bankruptcy, foreclosure, short sale or deed-in-lieu, the program wants 48 months.
7. Valuation and title. Lines up to $400,000 use an automated valuation (confidence score of 85 or better) with a property inspection report, or a full interior appraisal. Larger lines take a full interior appraisal. Appraisal waivers are not accepted. Title work is a full policy on a first lien and on second liens above $400,000. Smaller seconds get an owner-and-encumbrance report.
8. The first mortgage’s own documents must allow a junior lien behind it.
One point deserves plain language. Whether the first mortgage payment joins the stress payment on a second lien depends on the lender’s own coverage calculation, and that calculation governs. Do not assume your cheap first payment is quietly helping you. Ask the broker to confirm how the program counts it before you apply.
What the Leverage Really Looks Like
Leverage is capped by the first balance, so a low first mortgage helps only when it is also a small one. The second lien tops out at 70% CLTV. The room left for the line is that cap minus the first balance, as a share of value.
Picture a rental where the first mortgage sits at about 45% of value. At 70% CLTV, the new line can take up to roughly 25% of value. That is meaningful room. Now picture a rental where the first has crept up to 65% of value. Only about 5% of value is left. That can fall short of the $50,000 line minimum, so there is nothing to size. The low rate cannot fix that.
Coverage tightens as the line grows. The stress payment runs on the entire limit. A line sized at the full available room needs more rent than a smaller one. Many investors find the equity room is not the tight spot. The 1.10x test on the whole limit is.
Here are the program ceilings, each tied to its lien position and subject to underwriting:
| Situation | Credit score | Leverage ceiling |
|---|---|---|
| Second lien behind your first | 720 or better | 70% CLTV, lines to $500,000 |
| First lien, no mortgage | 740 or better | 75% LTV, lines to $500,000 |
| First lien, no mortgage | 700 to 739 | 70% LTV, lines to $500,000 |
| First lien, lines above $500,000 | 720 or better | 65% LTV, up to $1,000,000 |
There is no second-lien option below 720. If your score is 700 to 719, the first-lien path exists only if the rental has no mortgage. A declining-market flag can lower these ceilings by 5 points. These are ceilings, not offers.
The Draw, Repayment and Rate Terms
The program’s draw period is 5 years of interest-only payments on the drawn balance. Then comes a 25-year fully amortizing repayment period, for a 30-year maturity. The rate is variable.
Two draw rules surprise people. At least 80% of the line, and never less than $50,000, is drawn at closing. Later draws must be at least $5,000 each. So this is not a standby line you open and leave empty. Most of it is borrowed on day one.
The Consumer Financial Protection Bureau explains that during the draw period you can generally spend up to your credit limit, and that HELOC rates are usually variable, so payments can change from month to month. The Federal Trade Commission likewise describes a HELOC as a revolving line of credit, similar to a credit card, secured by your home. This line is secured by a rental, but the revolving idea is the same.
The practical point: a variable-rate line plus a fixed first mortgage means part of your debt can move while the rest stays put. Stress-test your cash flow with that in mind. The rate and the pricing terms come with the lender’s disclosures.
Where the General Rule Breaks
The rule of thumb says keep the first and add a second. These edge cases show where that falls apart.
- The first balance is already large. If the first takes most of the allowed combined leverage, the second has no room.
- The score is under 720. There is no second-lien cell below that. A cash-out refinance, which follows different rules, may be the fallback.
- The first mortgage’s documents forbid a junior lien. The lender has to be able to place a second behind it. Check this early.
- The property is outside the lane. Rural-designated property, row homes, condotels, commercial or agricultural property, leaseholds, land trusts, age-restricted communities, hobby farms, modular and log homes, mixed-use, and land contracts are not eligible. Neither is a property listed for sale in the prior 2 months or one with a solar lien. Single-family, PUD, townhome, two-to-four units, and warrantable and non-warrantable condominiums are eligible.
- Recent purchase or refinance. 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).
- Existing HELOC. If a line already sits behind your first, it has to be paid off and closed first. The program never writes a third lien.
- Borrower type. U.S. citizens, permanent residents, and non-permanent residents with a Social Security number are eligible. Foreign nationals and ITIN borrowers are not.
- Portfolio size. The program allows at most 5 loans or $2,500,000 per borrower.
- A later refinance of the first. If you refinance the first mortgage down the road, the second lien has to be dealt with. Plan for that before you open the line.
- Entity title. Vesting in your LLC is allowed on investment property, subject to program terms. The members sign as guarantors, and a title holder who is not a borrower signs a non-borrowing owner acknowledgment.
One more: the program is offered in 15 of Lendmire’s 16 licensed states, every licensed state except Tennessee. If your rental sits outside that footprint, this lane is closed, and the question becomes a different one.
Keep the First or Move to Cash-Out?
Keep the first when it is cheap, the equity need is modest, and the balance is small enough to leave room under the combined cap. Move to a cash-out when the balance is large, the need is large, or the score is under 720. The table shows the structural trade.
| Factor | Second-lien line | DSCR cash-out refinance |
|---|---|---|
| Your existing first | Stays in place | Paid off and replaced |
| What gets repriced | Only the new money | The whole balance |
| Payments | First plus a new one | One new payment |
| Credit floor | 720 on a second lien | Set by that program |
| Flexibility | Revolving after closing | One lump sum |
Cash-out has a real advantage: it is one loan, one payment, and often the widest path for large needs. The cost is giving up the low first. Lendmire’s investment property HELOC terms when you keep a low first mortgage piece compares the paths in more detail.
If you plan to use the money on the rental itself, keep records. Tax treatment varies; consult a qualified professional.
What to Prepare
Gather the lease, a current mortgage statement on the first, your entity documents if you hold title in an LLC, and an idea of the value. The lender will pull its own credit report. You will not need personal income documents, but the rent, lease, credit, and valuation are all documented.
Then ask the broker three things:
- How does this program count my first mortgage payment in the coverage test?
- What combined leverage can my score and property reach?
- Does my first mortgage allow a junior lien?
The best program for your situation turns on those answers, not on the headline numbers.
Key Terms Defined
DSCR: The rent divided by the qualifying payment, used to test whether a rental can carry its debt.
CLTV: Combined loan-to-value, meaning the first mortgage balance plus the new line, divided by the property’s value.
Second lien: A loan that sits behind your first mortgage, so the first gets paid first if the property is sold or foreclosed.
Stress payment: A fully amortizing payment on the whole credit limit at the start rate plus 2 percentage points, used only to test coverage.
Draw period: The 5-year stretch when you can draw on the line and pay interest only on what you have drawn.
Seasoning: The waiting period a lender wants after you buy or refinance before you can open a new loan on the property.
Frequently Asked Questions
Does my low first mortgage rate help me qualify?
No. The lender reads the first mortgage’s balance and payment, not its rate. A cheap rate does help your wallet, because you keep it. But it does not raise your leverage or lower the coverage hurdle.
Can I hold the line in my LLC?
Yes, on investment property, subject to program terms. The LLC members sign as guarantors. The line is a business-purpose loan on a one-to-four-unit non-owner-occupied rental.
What credit score do I need?
A second lien needs 720 or better. A first lien on a paid-off rental starts at 700. These are typical network floors, subject to underwriting.
How much can I borrow behind a first mortgage?
Up to 70% CLTV on lines from $50,000 to $500,000, subject to underwriting. The first mortgage balance comes out of that room first. The coverage test on the entire limit can set a lower number than the equity does.
Is a bank statement HELOC the same thing?
No. A bank statement HELOC is reviewed on deposit-based income and debt-to-income. A DSCR HELOC qualifies primarily on property-level rental income covering the payment, subject to lender guidelines.
Next Steps
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. Lendmire is a mortgage broker, not a lender, and every program is subject to underwriting and is not a commitment to lend. Because the broker shops several wholesale lenders, the match can follow your scenario instead of one lender’s menu.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage serving homeowners and real estate investors in its 16 full-service states. Home equity lines of credit are arranged through wholesale lending channels; Lendmire brokers the line and the lender underwrites each application under its occupancy-based 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
2. FTC — Home Equity Loans and Home Equity Lines of Credit
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 on an Inherited Rental Property · Best DSCR HELOC Program When the First Mortgage Is in Your Spouse’s Name · Best DSCR HELOC Program on an Investment Condo
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
Compliance and disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage broker and is not a direct lender, depository institution, financial advisor, or tax professional. Content in this article is general market analysis and educational information — not financial, legal, or tax advice for any specific situation. Lendmire does not guarantee loan approval; every transaction is subject to underwriting by the funding lender. Mortgage pricing and loan program guidelines are subject to change at any time without notice and vary by borrower characteristics, property type, and state regulations. Lendmire complies with Equal Housing Opportunity. Licensure verification: NMLS Consumer Access.