The Quick Read: A home equity line on your primary home can fund a rental purchase without touching your first mortgage, and the lender underwrites you and your house rather than the rental, so credit, combined loan-to-value, debt-to-income, and the home’s eligibility decide the outcome. The rental’s income plays almost no role. Every figure below is subject to lender guidelines and full file review.
- Qualification centers on you and your primary home, not on what the rental will earn.
- On a primary residence, the highest combined loan-to-value ceiling in the network reaches 90%, and only at a 720-or-better credit profile.
- Debt-to-income tops out at 50%, and the lender tests the payment on the full line, not just what you draw.
- A line secured by the rental itself is a different product: it caps at 70% combined loan-to-value, needs a 700 score, and tops out at $500,000.
- Equity alone is only half the test. A rental purchase loan still needs its own qualification.
What Is This Strategy, Really?
You use two loans, not one. The first is a line of credit secured by the home you live in. The second is the financing on the rental you are buying, or no second loan at all if you pay cash.
How large a line the equity supports.
An equity line is sized by combined loan-to-value, occupancy, and credit — not by rental coverage. Switch the occupancy or the credit band and the ceiling moves with it.
Investment-property lines require a 700 minimum credit score; second-home lines start at a 640 minimum and primary-residence lines at 600, and the combined-LTV ceiling steps down as the credit band drops on primary-residence and second-home lines and holds on investment-property lines; the line cap steps down on primary-residence lines and holds at every tier on investment-property and second-home lines.
A debt-to-income ratio above 45% requires 680+ credit. Profiles under 640 are limited to single-family homes. At least 75% of the approved line is drawn at closing. Ceilings, floors, and caps update from Lendmire’s centralized guideline source.
Line estimate
Illustrative estimate only — not a quote, Loan Estimate, approval, or commitment to lend. The rate is an editable assumption; equity-line pricing is variable through both the draw and repayment periods and never converts to fixed. Occupancy and credit drive the ceiling together: an investment property tops out at 70% combined LTV (minimum credit 700, line cap $500,000); a second home tops out at 90% combined LTV (minimum credit 640, line cap $500,000), with the ceiling stepping down as the credit band drops (the cap holds at every tier); a primary residence tops out at 90% combined LTV (minimum credit 600), and its $750,000 maximum line is available only at 75% combined LTV or below with a 700-or-better credit profile (720 on the longer-runway program) and a full appraisal. Lines above $500,000 require a full appraisal. Credit, debt-to-income, property type, and full underwriting review all affect the final line.
A home equity line of credit (HELOC) works like a credit card secured by your house. You borrow against the equity, which is the home’s value minus what you owe. The line can sit behind your existing mortgage as a second lien, so your first mortgage stays untouched. A refinance replaces that mortgage. A line sits next to it.
That difference is the whole appeal. If your first mortgage is one you want to keep, a line lets you pull equity out without giving it up.
It also covers when a different tool fits better. The brokerage’s complete DSCR loans guide covers the investor-loan side in depth.
Two Different Lines: Your Home or the Rental as Collateral
Your title mixes two products, and they behave very differently. Collateral is the property that secures the loan and that the lender can take if you stop paying. This is the first thing to sort out.
| Factor | Line on your primary home | Line on the rental |
|---|---|---|
| Collateral | The home you live in | The investment property |
| Who is underwritten | You and your finances | You and the property |
| Network CLTV ceiling | Up to 90% (720+ only) | 70% |
| Maximum line | $750,000 | $500,000 |
| Credit minimum | 600 program floor | 700 |
| Risk if you default | Your residence | The rental |
Bankrate notes that lenders offering a line against an investment property are less common, and that using the equity in your own home is the usual alternative when no lender will do the rental. The brokerage sees the same pattern across the wholesale network it works with. The primary-home line is the more widely available tool, and the rental-collateral line is the narrower one.
Both exist on the network, so both get covered below. Lendmire is a mortgage broker that arranges these through select wholesale partners and is never the lender.
Requirements for the Line on Your Primary Home
Across the network’s primary-residence lines, the requirements fall into a handful of tests. Lenders typically look at equity, credit, debt-to-income, property type, title, and exposure, all subject to program terms.
Equity and combined loan-to-value. Combined loan-to-value (CLTV) adds your first mortgage balance and the new line, then divides by the home’s value. On a primary residence, the network’s ceiling reaches 90% CLTV, and that figure exists only at a 720-or-better credit profile. Lower credit tiers sit under that ceiling. State overlays and credit profile can also lower the limit.
Line size. Lines run from $25,000 to $750,000. A line above $500,000 is for primary residences only, needs a 700 score or better (720 on the longer-runway program, the one with the five-year draw covered below), caps at 75% CLTV, and requires a full appraisal.
Credit. The program floor is 600. The lender uses a single-bureau score keyed to the primary wage earner, and the report can be no more than 90 days old at closing. Housing history matters too. Standards vary by program, and the five-year-draw program looks for 0x30 in the past six months and no more than 1×30 in 12 months at 640 and above.
Debt-to-income. Debt-to-income (DTI) is your monthly debt payments divided by your monthly gross income. The maximum is 50%, and it drops to 45% for scores from 600 to 679. A ratio above 45% requires a 680 minimum. The lender reviews your file on the interest-only payment calculated on the maximum draw.
Property. Single-family homes, 2-4 unit properties, PUDs, townhomes, and condominiums (including non-warrantable ones) are eligible. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned property are not offered.
Title. The home must be held by you personally or by a revocable living trust. An LLC cannot hold title on these lines.
Exposure. A borrower is limited to three lines. Anyone with more than 15 financed properties is not eligible.
Derogatory credit. A bankruptcy generally needs four years of seasoning from discharge or dismissal. Foreclosure history splits by program. One program counts a foreclosure after seven years and a short sale or deed-in-lieu after four, while the other declines that history regardless of age.
Reserves are not a headline requirement on these lines the way they are on rental loans. Even so, the next loan in the chain will care about your cash, which is covered further down.
How Underwriting Actually Treats the Line, Step by Step
The process follows a fixed order, and knowing it helps you avoid surprises.
1. The lender pulls your credit and checks the score tier. The tier sets your leverage ceiling before anything else is looked at.
2. The lender verifies your income and calculates DTI. Because the collateral is your residence, your personal income carries the file. This is the opposite of a rental loan, which qualifies primarily on property-level rental income covering the payment, subject to lender guidelines.
3. The payment is tested at the maximum draw. Even if you plan to borrow half the line, the DTI test assumes the full amount, interest-only. A big line sized for what you might need can push you over 50% before you spend a dollar.
4. The home is valued. Lines at or below $500,000 ordinarily use an automated valuation with no traditional appraisal, though a higher CLTV can trigger a secondary valuation. A full appraisal is required on every line above $500,000, and you can request one anyway.
5. Title and property eligibility are confirmed. This is where an LLC-owned home or an ineligible property type stops the file.
6. Closing and the first draw. At least 75% of the line is drawn at closing on both draw structures covered below, so you start paying interest on most of it on day one.
That sixth step catches people. A line sounds like flexible access to cash. Here it works closer to a loan you take most of at once, then pay down.
A Worked Example in Percentages
Run the numbers on a hypothetical home with a first mortgage equal to 50% of its value and a 740 credit score. The ceiling is 90% CLTV, so the most the line could add is 40 points of the home’s value. That is a ceiling, not a promise. The DTI test, the $750,000 maximum line, and the property review can all cut it down. Terms depend on the lender’s guidelines, the property type, the leverage, and a full review of the credit profile.
Now suppose you want to buy a rental with a DSCR purchase loan at 75% LTV, meaning 25% down. A DSCR loan is an investor loan where the lender compares the rent to the property’s full monthly payment (principal, interest, taxes, insurance, and any HOA dues) instead of leaning on your personal income. The down payment and closing costs can come from the line. If the rent covers that payment at roughly 1.2x, the purchase file looks healthy on coverage. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.
Now stress it. Say the rental sits vacant for a stretch. Your payment on the line is variable, and your first mortgage keeps running. The rental can no longer help cover any of it. Your personal income now carries three obligations at once: the first mortgage, the line, and the vacant rental’s loan.
Also note what 1.2x means. DSCR compares rent to the monthly payment only. Clearing it is not the same as positive cash flow, because repairs, vacancy, management, utilities, and capital expenses sit outside the calculation.
Draw Structures and Lien Position
The line can sit in first or second lien position. Most investors use it as a second lien so the existing first mortgage stays in place.
Two draw structures exist on primary residences and second homes:
- A 3-year interest-only draw followed by a 17-year fully amortizing repayment.
- A 5-year interest-only draw followed by a 25-year fully amortizing repayment, the longer-runway program referred to above.
Tennessee shortens both, to 3 years plus 12 years and 5 years plus 10 years. Investment lines run only the 5-year draw and 25-year repayment structure.
Pricing floats through both the draw and repayment periods and never converts to fixed. During the interest-only years, the balance does not shrink. When repayment begins, the payment steps up because principal now comes due. The CFPB describes the same draw-then-repay pattern for HELOCs generally, noting that repayment periods often run ten or 20 years.
After closing, the minimum subsequent draw is $1,000, with Texas at $4,000. That minimum is stated by the five-year-draw program, and the other does not state one. A quoted figure always belongs to its own program’s structure, so compare like with like.
Where the General Rule Breaks
Most of the rules above hold across the network. These cases bend them.
The rental is held in an LLC. The line on your primary home does not touch the LLC, which is fine. The trouble comes if the home itself is deeded to an LLC. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title on these lines. A home already in an LLC needs a vesting change, or a DSCR cash-out on a rental instead. By contrast, DSCR loans to LLC-titled borrowers are available subject to lender program eligibility.
You want to convert the home to a rental later. The line is underwritten as a primary-residence loan. The CFPB’s HELOC booklet also notes that lenders can reduce a credit line if the home’s value falls, which matters if your plan depends on future draws. Renting out the home can run into the terms of the line, so confirm before you move out.
You sell the primary home. The line must be paid off in full. If you planned to keep the line as long-term rental capital, a sale ends that plan.
The home is an ineligible property type. A manufactured home, log home, co-op, or condotel is not offered on these lines. Barndominiums and manufactured homes are likewise not offered in the network’s DSCR programs.
The home is listed for sale. A property listed for sale, or listed within the past 60 days, is ineligible in NC, PA, TN, TX, and WA.
You are in a state where the line is not offered. HELOC availability runs through Lendmire’s 16 full-service states only (AL, CA, CO, FL, GA, IN, MI, MT, NM, NC, OH, PA, TN, TX, VA, WA). That is narrower than the 41-market footprint for DSCR investor loans across 40 states plus Washington, D.C. Some of those states carry their own overlays, including combined-loan-to-value caps that depend on credit profile.
You use the funds on a rental. 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.
How the Line Changes Your Rental Purchase Loan
The line helps the down payment, and it adds a monthly obligation. Both effects matter.
On a DSCR purchase, most files land at 75% to 80% LTV, which means 20% to 25% down. Select programs reach 85% LTV with roughly a 700-plus score. The down payment has to come from somewhere, and a drawn line is a common source. Lenders reviewing the purchase will ask where the cash came from, so keep the draw documented and moving cleanly from the line to your account to closing.
Coverage works differently. A coverage ratio of 1.00 is where select programs start, not a universal floor. Another select-lender path takes coverage below 1.00, with leverage and terms adjusted. Stronger ratios open better pricing and leverage.
Credit also matters here. Most programs want around 660, a 620 floor exists in parts of the network, and 700-plus unlocks the strongest leverage tiers. Reserves on rental loans vary by lender, leverage, loan size, and transaction type. They commonly run around 6 months of PITIA (the full monthly payment of principal, interest, taxes, insurance, and any association dues), and loans above $1,500,000 typically step up to about 9 months.
One more point. The line never replaces the rental’s own test. A larger down payment lowers the monthly payment and can lift coverage, but it does not erase leverage caps, credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.
When the Rental Itself Carries the Line
If you already own the rental, a line secured by that property is possible, with tighter terms. On an investment property the network ceiling is 70% CLTV, with a 700 credit minimum and a $500,000 maximum line. Credit above 700 buys eligibility rather than leverage, since 720 and 700 both reach the same ceiling.
Because the line caps at $500,000 and full appraisals begin only above that, a line on an investment property sits in the automated-valuation lane and commonly closes with no traditional appraisal. The property must be held by you personally or in a revocable living trust, not an LLC. Investment files also follow the seven-year foreclosure and four-year short sale or deed-in-lieu seasoning path.
HELOC or DSCR Cash-Out: Which Tool Fits?
Both pull equity. They differ in who gets underwritten.
| Factor | Primary-home line | DSCR cash-out on the rental |
|---|---|---|
| What is underwritten | Your income and DTI | Rent against the payment |
| Collateral | Your residence | The rental |
| First mortgage on your home | Stays in place | Not involved |
| Standard-rental leverage | Up to 90% CLTV (720+) | Around 75% LTV on a standard rental |
| Seasoning | None stated | About 6 months is common |
| LLC borrower | Not allowed | Subject to lender program eligibility |
A short-term rental has its own limit: cash-out on short-term-rental collateral runs around 70% LTV, versus 75% for a standard rental. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
The primary-home line fits when you want to keep a low first mortgage, your DTI has room, and you need cash for a down payment or rehab. A DSCR cash-out fits when you already own a rental with equity, your personal DTI is stretched, or you hold property in an LLC. The investment-property experience across comparable files suggests a pattern. Investors who stack a line on their home and then add a rental loan often hit the DTI wall on the second application. The line’s payment, tested at the full draw, counts against them. Property-level qualification on the DSCR side sidesteps that wall.
It is a close call when your primary home has plenty of equity and your DTI is clean. The line is cheaper to set up, but it puts your residence behind a business bet. Investors comfortable with that risk can reasonably choose it. Those who prefer to keep the investment risk inside the investment property often lean DSCR. If the rental is a purchase and your DTI is tight, the DSCR route avoids that obstacle from the start.
Key Terms Defined
HELOC: A revolving line of credit secured by a property, with a draw period followed by a repayment period.
CLTV (combined loan-to-value): All loans secured by the property, added together and divided by its value.
DTI (debt-to-income): Your monthly debt payments divided by your gross monthly income.
DSCR (debt service coverage ratio): A rental’s monthly rent divided by its monthly payment, used to judge whether it covers itself.
Draw period: The stretch when you can borrow from the line and pay interest only.
Second lien: A loan that sits behind your first mortgage in repayment priority.
Seasoning: The waiting period a lender wants between two events, such as buying a property and pulling cash out of it.
Frequently Asked Questions
Can I use a HELOC on my primary home to buy a rental property?
Yes, if you qualify on your own credit, DTI, and equity. Lenders do not typically restrict what you buy with the funds on a primary-residence line, though program terms vary. The rental’s income does not carry the application. Your personal profile does.
How much can I borrow against my primary home?
The network’s primary-residence ceiling reaches 90% CLTV, and only at a 720-or-better credit profile. Lines run from $25,000 to $750,000, with anything above $500,000 capped at 75% CLTV and a full appraisal. Your actual limit depends on credit, DTI, property, and program.
Does the HELOC count against my DTI?
Yes. The lender reviews your file on the interest-only payment calculated on the maximum draw, whether or not you borrow all of it. Maximum DTI is 50%, with lower caps for credit profiles from 600 to 679. That payment can also limit later borrowing.
Is there a minimum credit score for a line on an investment property?
Yes. A line secured by a rental needs at least a 700 score, with no tier below it. A line on your primary home has a 600 program floor, with the 90% CLTV ceiling reserved for 720 and above.
What if I’d rather not put my home at risk?
A DSCR loan on the rental qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. That keeps your home out of the collateral. The tradeoff is that coverage and leverage rules apply to the rental. The CFPB warns that you could lose your home if you cannot repay a HELOC secured by it.
Next Step
If you are weighing a home equity line against a cash-out refinance and want to see how the numbers work, Lendmire can help you compare HELOC options based on the property, the equity available, credit profile, combined leverage, and your goals. An editable, illustrative calculator on the site can give you a rough picture before you talk to anyone. Questions go to 828-256-2183. A request for a quote runs through the quote page.
About Lendmire
Lendmire, NMLS# 2371349, is a mortgage brokerage that arranges home equity lines of credit through wholesale lending partners in its 16 full-service states. Lines on primary residences, second homes and investment properties are each reviewed individually by the lender under the program’s occupancy, credit and combined-loan-to-value guidelines. 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. Bankrate – HELOC on investment property
2. The CFPB
This article is part of Lendmire’s investment property HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How to Qualify for an Investment Property HELOC on a Home With No Mortgage · Can You Get an Investment Property HELOC After Refinancing Into a Very Low Mortgage? · Can You Get an Investment Property HELOC If the Home Will Be Listed Soon?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Legal disclosures. Lendmire (NMLS# 2371349) is a state-licensed mortgage brokerage that arranges financing through wholesale lender relationships. Lendmire is not a direct lender, depository institution, or registered financial advisor. The discussion above is general informational content about real estate financing — it is not financial, legal, or tax advice, and readers should consult licensed professionals for guidance on their individual circumstances. Loan inquiries are subject to lender underwriting; this article does not represent a commitment to lend. Loan terms, rates, and qualification standards vary by borrower, property, and state, and are subject to change at any time. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.