The Quick Read: Usually up to 70% of the rental’s value, with the first mortgage and the new line counted together. That ceiling applies at a 720 credit score or better, on lines from $50,000 to $500,000, subject to underwriting. Your line is whatever room is left after the first mortgage.
- The math is value times 70%, minus what you still owe on the first, capped at the program’s maximum line.
- A first mortgage at half the rental’s value leaves room for a line of about 20% of value.
- Rent must also cover a stress payment on the whole line at 1.10x or better.
- A higher score does not raise the second-lien ceiling. It stays at 70%.
Key Terms Defined
The terms below are defined in plain language first, so the rest of the article reads easily.
DSCR (debt service coverage ratio): gross monthly rent divided by the monthly payment the lender uses to qualify the loan. A reading of 1.10x means the rent covers that payment with 10% to spare.
CLTV (combined loan-to-value): all loans secured by the property, added together, divided by its value, as Wall Street Prep’s CLTV explainer lays out. Your first mortgage plus the new line is the numerator.
Second lien: a loan recorded behind the first mortgage. The first lender gets paid first if the property is ever sold or foreclosed.
Draw period: on this program, the first 5 years, when you pay interest only on what you have drawn.
Stress payment: the payment used to test your rent coverage. It is higher than your real payment on purpose, so the test leaves a cushion.
What Does a Second Lien Behind Your Fixed First Look Like?
A DSCR HELOC is a revolving line of credit secured by your rental. When you keep a first mortgage, the line sits behind it as a standalone second lien. Your first loan stays exactly as it is: same balance, same terms, same servicer.
That is the whole appeal for an investor with a low-cost first. A cash-out refinance replaces the first and reprices everything. The line leaves the first alone.
Here is what the structure looks like across Lendmire’s wholesale network:
- Qualification. The line qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. No traditional personal-income documentation, W-2s or personal income calculation.
- Title. The rental can stay in your LLC, subject to program terms. The members sign as guarantors.
- Who signs. The borrowers on the line do not have to match the borrowers on your first mortgage.
- Lien position. A first lien exists only on a rental with no mortgage. If you keep a first, the line can only be a second lien.
One more rule: it is never a third lien. If another lien already sits behind your first, this program is out.
How Is the Line Amount Calculated?
Take the property value and multiply by 70%. Subtract your first mortgage balance and any other lien. What remains is the most the line can be, then the program’s $500,000 cap applies. Lines also start at $50,000, so thin room can mean no line at all.
Two details trip people up. First, the full credit limit counts toward the CLTV, not only the amount you draw. Second, at least 80% of the line is drawn at closing anyway, so the full limit is close to what you carry.
This table shows how your first mortgage eats the ceiling. All figures are percentages of the rental’s value, at 70% CLTV on a second lien.
| First mortgage (% of value) | Room left for the line (% of value) |
|---|---|
| 40% | 30% |
| 50% | 20% |
| 55% | 15% |
| 60% | 10% |
| 65% | 5% |
| 70% or more | None |
Read it the way a lender would. A rental with a first mortgage at 50% of value can support a line of roughly 20% of value. At 65%, the 5% left over probably will not meet the $50,000 minimum on most rentals. Run your own value and balance through the same steps.
The $500,000 cap only bites on high-value properties. For most rentals, equity runs out first.
What Else Can Shrink the Line?
Equity sets the ceiling. Several other things can pull your number below it.
Credit. The minimum score for a second lien is 720, and the lender uses its own credit report. Below 720 there is no second-lien option. At 720 or better, the ceiling is the same 70%. Scoring 760 buys no extra leverage here.
Mortgage history. Expect no 30-day mortgage late in the last 12 months. A bankruptcy, foreclosure, short sale or deed-in-lieu needs 48 months of seasoning behind it.
Local flags. A declining-market flag lowers the ceiling by 5 percentage points. Philadelphia lines carry a ceiling 10 percentage points lower. Check the property’s location before you plan around 70%.
Value. Lines up to $400,000 use an automated valuation with a property inspection report, or a full interior appraisal. Lines above $400,000 need a full interior appraisal. Appraisal waivers are not accepted. An automated valuation can lag behind a recent renovation, so a full appraisal may serve a freshly rehabbed rental better.
Seasoning. 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). That matters if you were planning to refinance the first soon. Do that first, then wait.
Portfolio exposure. The program allows at most 5 loans or $2,500,000 per borrower.
Reserves and cash to close are not required. That surprises people, since many investor loans ask for both.
The Rent Test Is a Second, Separate Limit
You can have plenty of equity and still be limited by rent. The line needs a DSCR of at least 1.10x. That is gross monthly rent divided by a stress payment: a fully amortizing payment on the entire credit limit at the start rate plus 2 percentage points.
Taxes and insurance are not part of that qualifying payment. The lender’s own calculation governs, including how it treats the first-mortgage payment on a second lien.
Rent is the lesser of the appraisal’s market rent and the lease, unless three months of receipts support a lease above market. A lease in place is required. A two-to-four-unit property can have at most 1 vacant unit.
Picture an investor whose rental clears 1.10x comfortably on a $150,000-level line but only just clears it on the largest line the equity would allow. A bigger limit raises the stress payment and drags the ratio down. Equity says yes, rent says no.
(That interplay is why a fixed first helps you. The cheaper your first, the more your rent can spare for the line.)
What Do the Draw Rules Mean for Your Cash Flow?
The line has a 5-year interest-only draw period, then a 25-year fully amortizing repayment period, with a 30-year maturity. The rate is variable. The rate and pricing terms come with the lender’s disclosures, and this page does not quote them.
The practical rules:
- 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.
- The line closes before you buy anything with it. It is never closed together with a purchase.
Plan for the step-up. When the draw period ends, you pay principal and interest on whatever is drawn, on top of your first mortgage payment. Two payments on one property is the real cost of keeping the cheap first.
Also note that equity does not pool. Each line attaches to one property. A rental with spare equity cannot fund another rental’s line.
Does Your First Mortgage Allow a Second Lien?
Run this short checklist before you spend time on a quote.
1. Read your first mortgage documents. Look for any clause that limits additional liens on the property. Ask your servicer if the language is unclear.
2. Confirm there is only one lien today. A third lien is not allowed.
3. Confirm the property type. Single-family, PUD, townhome, two-to-four units, and warrantable and non-warrantable condominiums are eligible. Lots up to 10 acres are eligible.
4. Check the exclusions. Rural-designated property, row homes, condotels, commercial or agricultural property, leaseholds, land trusts, age-restricted communities, hobby farms, modular and log homes, land contracts and mixed-use are out. So is a property listed for sale in the prior 2 months and one with a solar lien.
5. Check the borrower. U.S. citizens, permanent residents and non-permanent residents with a Social Security number are eligible. Foreign nationals and ITIN borrowers are not.
6. Check your location. The program is offered in 15 of Lendmire’s 16 licensed states, every licensed state except Tennessee.
That is one reason to leave your first mortgage alone.
When Does a Cash-Out Refinance Beat the Line?
It depends on how much cash you need and how much debt the rental already carries. The line works when the first is cheap and the need is modest. A cash-out refinance works when the existing debt is low and you want more total cash.
| Factor | DSCR HELOC (second lien) | DSCR cash-out refinance |
|---|---|---|
| Your first mortgage | Stays in place | Replaced |
| Leverage ceiling | 70% CLTV at 720+ | Typically up to 75% LTV, standard rental |
| Cash structure | Revolving line, variable rate | One lump sum |
Run two quick cases, all as percentages of value. An investor whose first sits at 40% of value and who needs cash worth 25% of value fits easily, with 30% of room. The first never changes.
Now flip it. An investor with a first at 65% of value who needs 20% of value cannot get there with a second lien, since only 5% of room remains. A cash-out refinance at the higher 75% ceiling would add only 10% of value over the old balance, and it would reprice the whole loan. Neither option solves that file. Waiting for the rental to appreciate or paying the first down may.
For the full picture on structuring around a low-cost first, read Lendmire’s guide How to Qualify for a Bank Statement HELOC for an Investor Protecting a Fixed First Lien. That product is reviewed on documented income instead of rent, so it suits a different borrower. For the personal-income version of this structure, see Lendmire’s piece on an investment property HELOC for an investor protecting a fixed first lien.
When This Line Doesn’t Fit
Skip it in these cases:
- No room. The first is at or above the cap. There is nothing to write.
- Thin rent coverage. Rent cannot clear 1.10x on the stress payment for the whole limit.
- A score under 720 with a first mortgage in place. There is no second-lien cell for you.
- A pending sale. The CFPB’s HELOC booklet notes a HELOC is generally due in full when you sell. That is true of lines in general, so plan your exit.
- A line you rely on forever. The same booklet says a lender may freeze or reduce a line in some circumstances. Read the line agreement and do not treat unused credit as a guaranteed backstop.
- A rate-sensitive plan. The CFPB explains that a HELOC taken while you hold a mortgage is a second mortgage paid on top of the first. Payments move with the balance and the variable rate.
If you are weighing this against a bigger strategy, the complete DSCR loans guide covers how these programs fit together.
Frequently Asked Questions
What is the maximum DSCR HELOC I can get behind a first mortgage?
Up to 70% CLTV at a 720 score or better, with lines from $50,000 to $500,000, subject to underwriting. Subtract your first mortgage balance from 70% of value. The result, capped at the program maximum, is your ceiling. Local flags can lower it by 5 or 10 percentage points.
Does a higher credit score raise my limit?
No. On a second lien, 720 or better and 740 or better both reach the same 70% CLTV. The score is a gate, not a dial. A first lien works differently, but that applies only to rentals with no mortgage.
Can I get a first-lien line while keeping my first mortgage?
No. A first lien exists only on a rental with no mortgage. If you keep your first, the line is a second lien, and the 720 floor applies.
How long must I own the rental before applying?
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). Both clocks matter if you recently refinanced the first.
Does my LLC have to come off title?
No. The LLC can stay on title, subject to program terms. The members sign as guarantors, and a title holder who is not a borrower signs a non-borrowing owner acknowledgment and the security instrument.
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 broker arranging this program through a wholesale lender in its network. Terms are subject to underwriting, and every file is reviewed individually.
Keep the first mortgage if it is cheap. Size the line to the room that is left.
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. Wall Street Prep – Combined Loan-to-Value (CLTV)
3. CFPB – Home equity loan vs HELOC
This article is part of Lendmire’s DSCR HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How Much Can You Borrow on a DSCR HELOC for a Mortgaged Rental With a Fixed First? · How Much Can You Borrow on a DSCR HELOC Without Changing the Deed? · How Much Can You Borrow on a DSCR HELOC as a Trucker With Equipment Costs?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.