The Quick Read: You qualify by keeping the first mortgage in place and adding a standalone second lien behind it, sized to a combined loan-to-value (CLTV) cap and tested against the rent. Rent covers the line’s stress payment, your credit meets the tier, and the valuation and seasoning clear. The program qualifies primarily on property-level rental income covering the payment, subject to lender guidelines.
- Lien position: a second lien behind the mortgage you keep, or a first lien on a rental with no mortgage.
- Leverage: up to 70% CLTV on a second lien at a 720 score or better, on lines of $50,000 to $500,000.
- Coverage: rent must reach 1.10x on a stress payment across the whole line.
- No traditional personal-income documentation, W-2s or personal income calculation, subject to underwriting.
- Offered in 15 of Lendmire’s 16 licensed states, every licensed state except Tennessee.
A low first mortgage is the best starting point for this product. The smaller the balance in front, the more room you have under the combined ceiling. This walkthrough covers how underwriting treats the file, step by step, and where the usual rules break. For the full picture, see Lendmire’s complete DSCR loans guide.
What Does “Low First Lien” Actually Mean?
It can mean three different things, and each changes your borrowing room differently. Only one of them drives this program: the balance.
| Meaning | Effect on the line |
|---|---|
| Low balance | Directly adds room under the CLTV cap |
| Low interest cost | No effect on room; it is why you keep the loan |
| Low leverage | Same as low balance, expressed as a percent of value |
Many investors keep a first mortgage because its cost is attractive. That is a good reason to keep it. But the underwriter does not care why you kept it. The lender cares how much is owed against the property’s value.
Key Terms Defined
DSCR (debt service coverage ratio): A measure of whether a property’s rent covers its loan payment. NerdWallet describes it as a formula that measures how well rental income covers the loan payments.
Second lien: A loan recorded behind your first mortgage. If the property is ever sold or foreclosed, the first lien is paid first.
CLTV (combined loan-to-value): Your first mortgage balance plus the new line, divided by the property’s value.
Stress payment: The payment used only to test qualification. On this program it is a fully amortizing payment on the entire credit limit at a higher test rate. It is not what you actually pay.
Draw period: The stretch when you can borrow from the line. Here it runs 5 years, interest-only on the drawn balance.
Seasoning: The waiting period after you buy or refinance a rental before you can use it for a new loan.
What Is a DSCR HELOC, Exactly?
A DSCR HELOC is a revolving line of credit secured by a rental you keep. It is written as a standalone second lien behind your existing first mortgage, or as a standalone first lien on a rental with no mortgage at all.
The label is not standardized. Across the market, “DSCR HELOC” gets applied to cash-out refinances, closed-end seconds and revolving lines. The version described here is the revolving line. It is never closed together with a purchase, never a third lien, and never placed on your own home or a second home.
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.
An LLC can hold title, subject to program terms. The members sign as guarantors. A title holder who is not a borrower signs a non-borrowing owner acknowledgment and the security instrument.
How Does Underwriting Treat the File, Step by Step?
Underwriting runs in a predictable order. Here is the sequence across the wholesale network Lendmire places files with.
1. Title and vesting. The lender confirms who owns the rental and how it is held. An LLC works, with guarantors. The borrowers on the line need not match the borrowers on the first mortgage.
2. Lien structure. Your first mortgage stays. The new line sits behind it as a second lien. If you already carry another second lien or a line, a third lien is not available.
3. The CLTV math. Add the first balance and the new line, then divide by value. On a second lien, the ceiling is 70% CLTV, through select programs, subject to underwriting.
4. Credit tier. A second lien needs a 720 score or better. Below 720 there is no second-lien tier. Mortgage history matters too: no 30-day late in the last 12 months, and 48 months since a bankruptcy, foreclosure, short sale or deed-in-lieu.
5. The rent test. Gross monthly rent divided by the qualifying payment must reach 1.10x. The qualifying payment is principal and interest on the full line, not only the drawn amount. Taxes and insurance are not part of it.
6. Valuation, seasoning and property eligibility. Covered in the sections below.
On the rent itself: rent is the lesser of the appraisal’s market rent (Form 1007) and the lease, unless three months of receipts support a lease above market. A lease must be in place. A two-to-four-unit property may have at most 1 vacant unit.
How Does the Rent Test Work on a Line?
The test runs on the whole credit limit, not the balance you draw. That surprises most first-time borrowers. A $300,000 line is tested as if fully borrowed and amortizing, at a higher test rate.
That design makes the line size the lever you control. If rent is tight against the stress payment, a smaller line may clear 1.10x when a larger one will not.
Whether the first-mortgage payment joins the qualifying payment on a second lien is not published as a fixed formula. Confirm on the file how the lender treats it, because the lender’s own coverage calculation governs. Treat any DSCR figure you work out yourself as illustrative.
Rent coverage is a floor for approval, not a comfort guarantee. The line is variable-rate, so your actual payment can rise while rent stays flat. CFPB materials describe a HELOC as an open-end line with a draw period followed by a repayment period, and they warn that falling behind can put the collateral at risk.
Why Does a Low First Balance Matter So Much?
Because CLTV counts every lien. A small balance in front leaves more space under the cap.
Run it in plain units. Say a rental is worth 100 units. At 70% CLTV, total debt can reach 70 units. A first lien of 30 units leaves up to 40 units for the line. A first lien of 60 units leaves only 10 units, which is below the $50,000 line minimum on most rentals. That is the thin-room case: the math technically works, but there is no product to write.
The line-size caps apply on top. The second-lien line tops out at $500,000, so a very valuable rental with a tiny first balance still stops there.
What Are the Structures and Variations?
The tiers differ by lien position, and the labels matter. Second-lien figures are CLTV. First-lien figures are LTV.
| Lien position | Credit | Leverage ceiling | Line size |
|---|---|---|---|
| Second lien, behind your mortgage | 720+ | 70% CLTV | $50,000-$500,000 |
| First lien, no mortgage | 740+ | 75% LTV | Up to $500,000 |
| First lien, no mortgage | 700-739 | 70% LTV | Up to $500,000 |
| First lien, no mortgage | 720+ | 65% LTV | $500,000-$1,000,000 |
All figures are ceilings, subject to underwriting, never offers. A declining-market flag lowers the ceiling 5 points. Philadelphia lines carry a ceiling 10 points lower.
A first lien exists only on a rental with no mortgage. If you keep a mortgage, a second lien is your only path, and it carries the 720 floor.
What Are the Draw, Term and File Rules?
The line has 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.
At least 80% of the line is drawn at closing, and the closing draw is never less than $50,000. On the smallest lines, that means the whole line is drawn at closing. Later draws are at least $5,000 each. This is not a standby reserve. Interest starts on the closing balance.
On valuation, lines 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 is a full policy on a first lien and on second liens above $400,000. Smaller second liens use an owner-and-encumbrance report.
No reserves and no cash to close are required, subject to underwriting. Exposure is capped at 5 loans or $2,500,000 per borrower with the program.
When Can I Use the Rental?
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).
Where Does the General Rule Break?
Credit between 700 and 719. There is no second-lien tier. If you keep a first mortgage, you cannot use this program until the score reaches 720. A 700 score works only on a rental with no mortgage, as a first lien.
Ineligible property. The program excludes rural-designated property, row homes, condotels, commercial or agricultural property, leaseholds, land trusts, age-restricted communities, hobby farms, modular and log homes, land contracts, mixed-use, a property listed for sale in the prior 2 months, and a property with a solar lien. Eligible types include single-family, PUD, townhome, two-to-four units, and warrantable and non-warrantable condominiums.
Borrower type. U.S. citizens, permanent residents, and non-permanent residents with a Social Security number can apply. Foreign nationals and ITIN borrowers are not eligible.
Thin equity. If your combined leverage already sits near 70%, the line may be too small to write, as the example above shows.
Label confusion. A traditional investment-property HELOC is a different product. NerdWallet notes these lines are harder to get because lenders see higher default risk, and the lender pool is smaller. They underwrite on your personal credit and income. This program underwrites mainly on rent, and an LLC can hold title.
Selling later. CFPB materials note that a HELOC generally must be paid in full if you sell the property. Plan for that payoff.
For more on lender availability, see Lendmire’s piece DSCR HELOC Lenders for Investors Keeping a Low First Lien.
What Does the Investor Decision Look Like?
Ask three questions in order.
First, is the first mortgage worth keeping? If its cost is clearly below what a new first lien would cost, a second lien preserves that advantage. If the first is expensive, a DSCR cash-out refinance may beat keeping it. Compare the blended cost of the first plus the line against one new loan, using your own numbers.
Second, is there room? Add your balance and the desired line, divide by value, and check that the result sits at or under 70% CLTV on a second lien.
Third, does the rent clear 1.10x on the full line? If not, trim the line size and test again.
Picture an investor with a duplex, a 720-plus score and a small first mortgage. The CLTV has space, the rent clears the stress payment, and the line funds a down payment on the next rental. The line must be in place before the new contract. The purchase loan is judged mostly on the new property’s own rent.
Now flip it. Another investor holds a large first balance on a tight-rent property. The room is thin and coverage is borderline. Here a smaller line, a different product, or waiting may serve better.
Document checklist for the file: the lease, rent receipts if you rely on them, entity papers and guarantor information if held in an LLC, the first mortgage statement, and ID. Tax treatment varies; consult a qualified professional.
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. Call 828-256-2183 or request a quote.
Frequently Asked Questions
Can I get a first-lien line while I still have a mortgage?
No. If you keep your mortgage, the line is a second lien, which carries a 720 minimum score and a 70% CLTV ceiling, subject to underwriting.
Does the line payment hurt my DSCR?
The test uses a stress payment on the entire credit limit, so line size directly affects coverage. A smaller line is easier to clear at 1.10x. Confirm on the file how the lender treats the first-mortgage payment on a second lien.
Does an LLC work?
Yes, on investment property, subject to program terms. The members sign as guarantors, and a title holder who is not a borrower signs an acknowledgment and the security instrument.
How long must I own the rental?
Two six-month clocks apply: the line is not available on a rental bought or refinanced in the last 6 months (last note date to new note date), and title must have been held for 6 months (settlement date to note date).
Can I use it for my next down payment?
Yes, if the line is in place before you go under contract. At least 80% of the line is drawn at closing, so size it to the cash you need.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage serving landlords and real estate investors in 16 licensed states. DSCR home equity lines of credit on non-owner-occupied one-to-four-unit rentals are arranged through wholesale lending channels in 15 of those states (every licensed state except Tennessee); Lendmire brokers the line and the lender underwrites each application on the property’s rent, credit and leverage. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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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. NerdWallet – HELOC on investment property
2. CFPB
This article is part of Lendmire’s DSCR HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How to Qualify for a DSCR HELOC for BRRRR Investors Funding the Rehab · How to Qualify for a DSCR HELOC by State and Where It Is Offered · How to Qualify for a DSCR HELOC for Refinancing a Balance Into a New HELOC
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosures. The information presented in this article is general market commentary, not financial, legal, or tax advice. Lendmire is a mortgage brokerage (NMLS# 2371349) — not a direct lender or depository institution — and loan placement is subject to lender underwriting. Nothing in this content represents a commitment to lend. Loan terms, pricing, and program availability vary based on borrower qualifications, property characteristics, and state of subject property, and are subject to change at any time. Lendmire complies with Equal Housing Opportunity requirements. Consumer access: nmlsconsumeraccess.org.