The Quick Read: Not directly, because credit unions rarely write a true rent-qualified line; they usually size a rental line from your personal credit and debt-to-income ratio, capped at a combined loan-to-value ceiling minus what you still owe, while the rent-qualified version comes through select wholesale programs at up to 70% combined loan-to-value on a second lien. The two products answer different questions, and mixing them up is where most of the confusion starts.
- A credit union rental line is sized by your credit, your personal debt load, and the equity left after the first mortgage.
- The core math is property value times the maximum combined loan-to-value, minus the liens already on the property.
- Through select wholesale programs, a DSCR HELOC second lien runs up to 70% CLTV at a 720 credit score or better, on lines from $50,000 to $500,000, subject to underwriting.
- Monthly rent must cover a stress payment, a fully amortizing payment on the whole line at the start rate plus 2 percentage points, by at least 1.10x, and your personal income is not calculated.
- Recent high-leverage financing on a second rental often leaves little or no room, whichever lender you ask.
Do Credit Unions Offer a True DSCR HELOC?
Rarely. A credit union line on a rental is usually a personal-credit product. The lender looks at your score, your verified income, your assets against your liabilities, and your debt-to-income ratio, which is your monthly debts divided by your monthly income. Investors who have compared credit unions on BiggerPockets describe exactly that file, with a debt-to-income limit around 43% at some institutions.
A DSCR HELOC works the other way. DSCR stands for debt service coverage ratio. It measures whether the property’s rent covers the payment on the debt. The rent qualifies the line, and the owner’s tax returns, pay stubs and personal debt-to-income ratio never enter the calculation. That product lives mostly with non-bank wholesale lenders, which is the lane Lendmire, a mortgage broker, works in.
Two other credit union habits matter for a second property. Many credit unions will not lend on a rental titled in an LLC, and investors report that lines have been cut after approval. Both are reasons to ask before you apply.
How Much Can You Borrow? The Formula
Every home equity line, credit union or otherwise, starts with the same subtraction. Take the property’s value, multiply by the maximum combined loan-to-value (CLTV), and subtract the liens already on the property. CLTV adds the first mortgage balance and the new line together, then divides by value. Whatever is left is the most the line can be. Then the product’s own dollar cap and minimum line size apply.
On the credit union side, the ceiling is set by each institution’s own policy. Investors comparing credit unions on BiggerPockets report ceilings that vary from one institution to the next, with line caps often in the low-to-mid six figures. Treat that as a market observation, not a promise from any lender.
For DSCR HELOCs offered through the programs Lendmire places files with, the second-lien ceiling is 70% CLTV at a 720 credit score or better, on lines up to $500,000. There is no second-lien tier below 720. A rental with no mortgage can take a first-lien line instead: up to 75% loan-to-value at 740 or better, 70% from 700 to 739, and 65% on lines above $500,000, which run to $1,000,000. Each figure is subject to underwriting, lender guidelines, and a complete review of property type, leverage, and credit.
A worked example, in percentages of value
Picture a second rental you own, with a first mortgage you plan to keep. Here is how the 70% CLTV ceiling plays out as the mortgage balance changes. These are modeled inputs, not market data.
| Mortgage owed (% of value) | Room at 70% CLTV (% of value) | Read |
|---|---|---|
| 40% | 30% | Room for a meaningful line |
| 55% | 15% | Workable if the property is valuable |
| 65% | 5% | Often under the $50,000 minimum |
Notice what drives the result. Once you clear the 720 credit score minimum, the first mortgage balance does most of the work in setting the line size. A rental bought with 20% down and held for the minimum seasoning period usually leaves only a thin slice, and a thin slice is often smaller than the minimum line. That is arithmetic, not a lender quirk.
The rent test can also cap the line before the equity does. The qualifying payment is principal and interest on the entire credit limit at a stress rate, so a larger line demands more rent. Rent is the lesser of the appraisal’s market rent and the lease, unless three months of receipts support a lease above market. Taxes and insurance are not part of that qualifying payment. Confirm on the file how the lender treats the first-mortgage payment on a second-lien line, since the lender’s own coverage calculation governs.
What Limits the Amount on a Second Property?
Lien position. The line 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 closed together with a purchase, never a third lien, and never placed on your own home or a second home. Each line is secured by one rental. Equity in your first rental sizes a line on the first rental, not on the second.
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).
Valuation. Lines up to $400,000 use an automated valuation with a property inspection report, or a full interior appraisal. Larger lines take a full interior appraisal. Appraisal waivers are not accepted.
Draw rules. At least 80% of the line is drawn at closing, and the closing draw is never under $50,000, so the smallest lines are drawn in full at closing. Later draws are at least $5,000 each. The draw period is 5 years interest-only on the drawn balance, followed by a 25-year fully amortizing repayment period and a 30-year maturity. The rate is variable.
Credit and exposure. The credit 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. No reserves and no cash to close are required. A borrower can have at most 5 loans or $2,500,000 with the program, which matters if you are building a portfolio.
Property type. Single-family homes, PUDs, townhomes, two-to-four unit properties and condominiums can be eligible. Rural-designated property, condotels, row homes, leaseholds, mixed-use and properties listed for sale in the prior 2 months are outside the lane. A lease in place is required, and a two-to-four unit property can have at most 1 vacant unit. A declining-market flag can lower the ceiling by 5 points.
Borrowers must be U.S. citizens, permanent residents, or non-permanent residents with a Social Security number. Foreign nationals and ITIN borrowers are not eligible. This program is offered in 15 of Lendmire’s 16 licensed states, every licensed state except Tennessee.
If your title sits in an LLC, the program allows it for investment property, subject to lender program eligibility. The members sign as guarantors. Lendmire’s piece on how LLC-titled borrowers size an investment property HELOC walks through that structure.
Why Credit Unions Get Cautious on Rentals
A credit union treats the same rental line differently depending on its stated purpose. NCUA’s legal opinion on member business loans says a loan for a business-investment-property purpose, secured by real estate other than the member’s primary residence, generally falls under the business loan rule.
A federal rulemaking notice on member business loans adds that a loan secured by a one-to-four family property that is not the borrower’s primary residence becomes a member business loan once the borrower’s aggregate business balance passes $50,000. Those loans count toward the credit union’s own business lending cap. Rules get updated, so each credit union’s current classification is its own to confirm.
The practical read: a credit union may limit rental lines, cap them, or decline them, because of how it must classify them. That is policy and regulation, not a judgment on you.
Key Terms Defined
DSCR (debt service coverage ratio): Monthly rent divided by the qualifying payment. A 1.10x ratio means rent is 10% above the payment.
CLTV (combined loan-to-value): The first mortgage balance plus the new line, divided by the property’s value.
Stress payment: The payment used only to test the file. It is a fully amortizing payment on the entire credit limit at a start rate plus 2 percentage points.
Draw period: The first 5 years, when you can draw funds and pay interest only on what you have drawn.
Lien position: Your place in line to be repaid. A second lien sits behind the first mortgage.
Seasoning: The waiting period between buying or refinancing a property and borrowing against it again.
Credit Union, DSCR HELOC, or Cash-Out Refinance?
The right product depends on your debt load, your first mortgage, and how you hold title. Here is the side-by-side.
| Factor | Typical credit union rental line | DSCR HELOC (select programs) |
|---|---|---|
| Reviewed on | Personal credit and DTI | Rent versus stress payment |
| Personal income | Verified | Not calculated |
| Title | Many decline an LLC | LLC allowed in the program |
| Leverage | Set by each credit union | Up to 70% CLTV, second lien |
| Line size | Often low-to-mid six figures | $50,000 to $500,000 second lien |
And here is how to choose among the three paths.
| Your situation | Likely fit |
|---|---|
| Strong personal income, few financed properties, individual title | Credit union line is worth a call |
| Heavy write-offs, many financed properties, or an LLC owner | DSCR HELOC, if the rent covers the test |
| Existing first mortgage is costly and you want to replace it | DSCR cash-out refinance |
| Existing first mortgage is one you want to keep | A second-lien line, either type |
The main trade-off is the first mortgage. A line keeps your existing first loan in place and adds a second lien behind it. A cash-out refinance replaces the first loan entirely. The best program for your situation depends on property type, credit profile, how much leverage you need, and what you want to do with the money. Lendmire’s complete DSCR loans guide covers the wider DSCR landscape when a line is not the right fit.
A broker can shop several wholesale lenders and match the scenario to the program, rather than running one institution’s rules against your file. That is useful when your first call fails on title, property count or income documentation.
What to Ask a Credit Union Before You Apply
A short list saves a hard credit pull on a product that was never going to fit:
- Do you lend on non-owner-occupied one-to-four unit rentals at all?
- Will you lend on an LLC-titled rental, or must title be in my name or a trust?
- What is the maximum CLTV on a rental, and does it change by property type?
- Is the line sized on my personal debt-to-income ratio or on the rent?
- How many financed properties will you count before you stop?
- Can you cut or freeze the line after closing?
Bring the lease, the first mortgage statement, and a clear note on how you plan to use the funds.
Frequently Asked Questions
Can a credit union give me a DSCR HELOC on a rental?
Rarely. Credit union rental lines are generally underwritten on personal credit and debt-to-income, not on rent coverage. The rent-qualified version is offered through select wholesale lenders instead. If you want one, ask whether the credit union will look at the property’s income or only yours.
How much equity do I need left to qualify for a line on a second rental?
Enough that the first mortgage plus the new line stays at or under the CLTV ceiling, and the remaining room clears the $50,000 minimum line. On the DSCR HELOC second lien, the ceiling is 70% CLTV at a 720 score or better, subject to underwriting. If the first mortgage is large relative to value, the room left may fall short of that minimum.
How long do I have to wait after buying or refinancing 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 my LLC hold title, and how many loans can I have?
On the DSCR HELOC, LLC vesting is allowed for investment property, subject to lender program eligibility, with the members signing as guarantors. A borrower can carry at most 5 loans or $2,500,000 with the program. Many credit unions decline LLC-titled rentals, so ask first.
Is the interest on a rental line deductible?
Tax treatment can depend on how the funds are used and how the property is held; borrowers should keep clear records and speak with a qualified tax professional before relying on any deduction.
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. Programs change, every file is underwritten individually, and nothing here is a commitment to lend.
The investor who gets the most from a second rental’s equity is usually the one who checks the first mortgage balance before checking anyone’s line cap.
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. BiggerPockets: HELOC on rental properties
2. BiggerPockets: HELOC availability on a rental
3. NCUA legal opinion on the member business loan regulation
4. Federal Register: Member Business Loans; Commercial Lending
This article is part of Lendmire’s DSCR HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can You Get a DSCR HELOC While Your Credit Is Frozen? · DSCR HELOC vs. a Conventional Refinance to Clear Another Property’s Mortgage · DSCR HELOC Requirements With One Year of History
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.