The Quick Read: It depends on one subtraction: the new line can reach the lender’s combined loan-to-value ceiling on the rental’s value, less the first mortgage that stays, and the old line’s balance is paid out of that room instead of stacking on top. On a second lien, the ceiling is 70% CLTV at a 720 score or better, on lines up to $500,000, subject to underwriting.
- Maximum new line = (value × maximum CLTV) − first mortgage − any old line balance that is not paid off.
- Paying off the old line at closing means its balance is refinanced inside the new line, not added to it.
- The old line cannot stay open behind the new one on the same rental, because this program never takes a third lien.
- Most of the new line is drawn at closing, so a switch is not a standby reserve.
What a DSCR HELOC Is, in Plain Terms
A DSCR HELOC is a revolving line of credit secured by a rental you own. It qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. The line is written in one of two positions. It is a standalone second lien behind a first mortgage you keep. Or it is a standalone first lien on a rental with no mortgage.
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 the wholesale network Lendmire works with, the structure is consistent. There is no traditional personal-income documentation: no W-2s, pay stubs, or debt-to-income calculation, and your LLC can hold title, subject to program terms. The lines are available on one-to-four-unit rentals.
Lendmire is a mortgage broker. It places these files with wholesale lenders, and the lender underwrites and approves them. The program runs in 15 of Lendmire’s 16 licensed states, every licensed state except Tennessee. For the full picture of how these investor loans work, see the complete DSCR loans guide.
Key Terms Defined
DSCR (debt service coverage ratio): Gross monthly rent divided by the qualifying payment. This program wants at least 1.10x.
CLTV (combined loan-to-value): The first mortgage balance plus the new line, divided by the property’s value. First-lien lines use plain LTV, because there is no other loan.
Lien: A lender’s recorded claim on the property. Position matters because the first lien is paid first.
Payoff letter: The old lender’s statement of what it takes to clear the balance. The new lender sends that amount at closing.
Lien release: The recorded document showing the old line is closed. A zero balance alone does not do this.
Draw period: In this program, 5 years of interest-only payments on the drawn balance. A 25-year repayment period follows, for a 30-year maturity. The rate is variable.
Is There Such a Thing as Transferring a HELOC to a New Bank?
No. A line of credit does not move between banks. The new lender writes a new line, and its proceeds pay off the old one. The old account then closes.
That reframes your question. You are not asking how much of the old line survives. You are asking how large a new line the property can support, and how much of it the payoff uses up.
Yahoo Finance describes CLTV as your existing primary mortgage, plus what you request, plus all home equity loans or lines against the home, measured against its value. The same piece says CLTV still comes into play when a second line comes from a different lender. That is the trap. If the old line is still recorded when the new one funds, it counts.
How to Calculate the Maximum New Line
The formula is simple. Take the rental’s current value and multiply by the CLTV ceiling. Subtract the first mortgage. What remains is the most the new line can be. If the old line is paid at closing, the payoff comes out of that room, and whatever is left is your net cash.
The CFPB’s HELOC booklet describes the same basic method. Lenders take a percentage of the home’s appraised value and subtract the existing mortgage. Valuation drives everything, and the lender sets it. It is not your purchase price.
Here is a modeled example. These are assumptions, not market data, and they use shares of value instead of dollars.
| Item | Share of value |
|---|---|
| Second-lien CLTV ceiling | 70% |
| First mortgage staying in place | 45% |
| Room for the new line | 25% |
| Old line balance paid at closing | 15% |
| Left after payoff | 10% |
Now tighten the equity. Say the first mortgage is 55% of value and the old line is 15%. The room is 15%, which just clears the old line and leaves nothing. If the old line were 20%, the new line could not clear it at all.
Three details can shrink the number further.
- The line has a floor. Lines start at $50,000, and the closing draw is never less than $50,000.
- The whole line is stress-tested. The qualifying payment is a fully amortizing payment on the entire credit limit at a stressed start rate. A line sized to pay off a large old balance carries a larger test payment.
- Rent has to cover it. 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, and a two-to-four-unit property may have at most 1 vacant unit.
On a second lien, confirm on the file how the lender treats the first-mortgage payment in its coverage calculation. The lender’s own calculation governs.
What Happens to the Old Line When the New One Funds?
The old line cannot stay open behind the new one on the same rental. This program writes a standalone second lien or a standalone first lien. It never takes a third lien. If the old line sits on this rental, it is paid off at closing and released.
The sequence runs like this:
1. Request a payoff letter from the old lender.
2. The new lender orders its valuation and title work.
3. At closing, the new line’s proceeds go to the old lender.
4. Confirm the old line is formally closed and released.
Step four matters more than it looks. A zero-balance line can still sit on title, and a recorded line can count against combined leverage even when you owe nothing on it. Get the closure in writing.
One exception changes the math. If the old line is secured by a different property, it is not a lien on this rental. It does not reduce this property’s room. It also does not get paid off by this new line unless you choose to direct proceeds that way.
Which Lien Position Do You Land In?
Your first mortgage decides the structure. If you keep a first mortgage, the new line is a second lien. That requires a 720 score or better and caps combined leverage at 70% CLTV, on lines up to $500,000. Below 720 there is no second-lien tier on this program. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.
If the rental has no mortgage, the new line is a first lien, and leverage rises with credit tier:
| First-lien tier | Maximum LTV | Line size |
|---|---|---|
| 740 or better | 75% | Up to $500,000 |
| 700 to 739 | 70% | Up to $500,000 |
A borrower with a first mortgage can only take a second lien. A first lien exists only on a rental with no mortgage. Treat the table as ceilings, not offers. A declining-market flag lowers the ceiling 5 points, and Philadelphia lines carry a ceiling 10 points lower.
If your old line is the only loan on a paid-off rental, you are in first-lien territory. The new line can reach the full LTV for your tier, and the payoff comes out of it.
The Part Most Investors Miss: You Draw Most of It on Day One
At least 80% of the line is drawn at closing. Later draws are at least $5,000 each. The closing draw is never less than $50,000, so on the smallest lines the whole line is drawn at closing.
A switch therefore starts interest on most of the new line immediately. The old line may have been a flexible reserve. This one is closer to a drawn loan with a 5-year interest-only period. If you wanted a standing cushion, size the line with that in mind.
The payoff also has a cost beyond the balance. Yahoo Finance notes that refinancing a line brings closing costs and a new appraisal. Here, lines to $400,000 use an automated valuation (confidence score 85 or better) with a property inspection report, or a full interior appraisal. Lines above $400,000 take a full interior appraisal. Appraisal waivers are not accepted.
Eligibility Checks Before You Switch
The rental has to fit the program before the math matters.
- 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).
- Credit. The minimum is 720 on a second lien and 700 on a first lien. The program wants no 30-day mortgage late in the last 12 months and 48 months since a bankruptcy, foreclosure, short sale, or deed-in-lieu.
- Exposure. A borrower can have at most 5 loans or $2,500,000 with the program.
- Property. Single-family, PUD, townhome, two-to-four-unit, and condominium properties are eligible. Rural-designated property, condotels, row homes, and leaseholds are not. A property listed for sale in the prior 2 months, or one with a solar lien, is out as well.
- Borrowers. U.S. citizens, permanent residents, and non-permanent residents with a Social Security number are eligible. Foreign nationals and ITIN borrowers are not.
Reserves and cash to close are not required, subject to underwriting. Hazard insurance covers both liens, with flood coverage where required.
Not Every Bank Takes a Rental, and Limits Vary
Your current bank may not be the problem. Some banks simply do not write lines on rentals. One BiggerPockets thread shows investor-reported limits varying widely by institution, and one bank declining rental lines and offering a cash-out refinance instead.
That variation is why a broker matters. The best program for your situation depends on your property type, credit profile, leverage need, and how much rent supports the line. Lendmire shops its wholesale network and matches the file to a program that fits, rather than steering you to one lender’s menu. For the related question of a personal-income route, see Lendmire’s piece How to Qualify for a Bank Statement HELOC When Switching Banks With an Open Balance. A personal-income investment HELOC is a different product with its own rules, because it reads your income and not the rent.
When a Line Is the Wrong Tool
If the first mortgage plus the old line already use most of the available room, a new line may be too small to clear the old balance. You have three realistic paths:
| Path | What it does | Best when |
|---|---|---|
| Pay down the old line first | Shrinks combined leverage | You have cash and a close miss |
| New DSCR HELOC | Replaces the old line, keeps the first mortgage | Equity covers the payoff plus a margin |
| Cash-out refinance | Replaces both loans with one | Combined leverage is too tight for a line |
A refinance that pays off a non-purchase second lien is generally treated as cash-out, and it has its own leverage ceiling. That ceiling is a different limit from this line’s, so run both.
If your old line has moved into repayment, the usual course is to replace it with a new line or another loan. You generally cannot raise the limit on the old one.
Common Mistakes When Switching
- Reading 70% as 70% of value. The ceiling is combined. Everything already recorded comes off the top first.
- Skipping the release. A zero balance does not remove the old line from title. Get it closed and released.
- Treating the new line as a reserve. At least 80% is drawn at closing.
- Assuming a higher score buys more leverage. On a second lien, the 720 tier is the only one, and the ceiling stays at 70% CLTV.
- Sizing the line to the equity, not the rent. The 1.10x test runs against the entire credit limit at a stress payment.
- Leaving an old second lien on the same rental. There is no room for a third lien.
Frequently Asked Questions
Does the old line’s balance reduce what I can borrow?
Yes, but it is paid from the new line’s room and not added to it. The new line’s maximum is value times the CLTV ceiling, minus the first mortgage. The old balance is then cleared out of that amount, and the remainder is your net cash. Subject to underwriting and the lender’s own calculation.
Can I keep the old HELOC open and add the new one?
Not on the same rental. This program never takes a third lien, so the old line is paid off and released at closing. If the old line is secured by a different property, it does not count against this rental’s leverage. Confirm how it is recorded before you assume either way.
How long must I own the rental before switching?
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 are subject to underwriting. Confirm on the file which note date the lender counts.
Does the rent test apply to the whole line or only the amount I draw?
It applies to the whole line. The qualifying payment is a fully amortizing payment on the entire credit limit at a stressed start rate, and it covers principal and interest only. The rent has to cover that payment at 1.10x or better. So a larger line, even one you mostly draw at closing, needs more rent behind it.
What if my equity is too thin to pay off the old line?
Then a new line may not fit. You can pay down the old balance first, or look at a cash-out refinance that replaces both liens. The broker can run both structures against the same property value so you can compare the combined leverage and the net cash. Eligibility depends on the property, credit, and current lender guidelines.
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. You can reach the team at 828-256-2183 or request a quote. Short-term rental rules can vary by city, county, HOA, and property type, so investors should confirm local rules before relying on projected rental income.
When you switch lines, the old balance does not vanish. It just moves inside the new line’s combined-leverage ceiling, and that ceiling is what you are really negotiating.
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
2. CFPB, “What You Should Know About Home Equity Lines of Credit” booklet
3. BiggerPockets forum thread, “HELOC on investment property”
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 Refinancing a Balance Into a New HELOC? · How Much Can You Borrow on a DSCR HELOC on a Vacant Rental Without a Lease? · How Much Can You Borrow on a DSCR HELOC After a First Mortgage Modification?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
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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.