The Quick Read: Usually, you can borrow up to 70% combined loan-to-value (CLTV) on an investment property, with a 700 minimum credit score and a $500,000 maximum line, after subtracting every lien already on the rental and before the purchase lender decides whether borrowed funds count.
- The formula: property value × the CLTV cap − all existing liens = your maximum line.
- Rentals get less than homes: a line on a primary residence can reach 90% CLTV, but only at a 720 credit profile or better.
- Two approvals: the line is one approval. The DSCR purchase loan is a separate approval with its own credit, reserve, and coverage tests.
- Borrowed funds are not automatic: lenders differ on whether a drawn line counts toward the down payment, closing costs, or reserves.
Key Terms Defined
HELOC is a home equity line of credit, an open-end line you can borrow against repeatedly up to a set limit. CLTV is combined loan-to-value, which adds every loan secured by the property and divides the total by its value. Draw period is the stretch when you can borrow and typically pay interest only. Repayment period is the stretch after that, when the balance amortizes. DSCR is the debt service coverage ratio, which compares a rental’s income to its monthly obligation. PITIA is principal, interest, taxes, insurance, and association dues. Seasoning is the time funds or a property must sit before a lender counts them. Vesting is how title to the property is held.
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.
How Is the Maximum Line Calculated?
The maximum line equals the property value times the lender’s CLTV cap, minus everything already owed against the property. That is the whole formula. Two limits then apply on top of it: the dollar ceiling on the line and your credit profile.
On an investment property, the network ceiling is 70% CLTV. Credit must be at least 700, and lines run from $25,000 to $500,000. Lendmire is a broker, so these are guidelines from the select lenders in its wholesale network. Every file is reviewed individually.
Here is how the cap works in percentages. Say a rental has a first mortgage equal to 50% of its value. The 70% cap leaves room equal to 20% of value. If the first mortgage equals 30% of value, the room is 40% of value. Free and clear, the room is the full 70%.
| Existing liens (% of value) | Room under a 70% cap (% of value) |
|---|---|
| 0% (free and clear) | 70% |
| 30% | 40% |
| 50% | 20% |
| 60% | 10% |
| 70% or more | None |
For a high-value, lightly leveraged rental, the $500,000 line ceiling can bind before the 70% cap does. For a heavily mortgaged rental, the cap binds first, and the line may be small or zero. The percentages stay the same either way. An illustrative calculator on this page can turn them into dollars for your numbers.
Why Is a Rental Line Smaller Than a Home Line?
Lenders see more risk in a rental, so they set tighter caps and fewer of them offer the product. NerdWallet says an investment-property HELOC is possible. It also says the lender pool is smaller, the requirements are strict, and you can’t borrow as much as you could against a primary home. Lenders may also require more than one appraisal on a rental.
On this network, the gap is easy to see. The Lendmire network offers equity lines through two wholesale programs. One is a higher-leverage program. The other is a longer-runway program, which has a longer draw structure and a lower combined-exposure limit. Where they differ, each figure applies only within its own program.
| Factor | Line on a rental | Line on your primary home |
|---|---|---|
| CLTV ceiling | 70% | Up to 90%, only at 720+ credit |
| Minimum credit | 700 | 600 program floor |
| Line size | $25,000 to $500,000 | $25,000 to $750,000 |
| Over $500,000 | Not available | Primary only, 75% CLTV cap, full appraisal |
| Where the risk sits | On the rental | Your residence backs rental risk |
On a rental line, 700 is a hard minimum, and a score above it adds no leverage. Both the 700 and 720 tiers reach the same 70% CLTV, whereas the 90% ceiling exists only on primary-residence and second-home lines at 720 or better. A line above $500,000 on a primary residence requires 700 or better (720 on the longer-runway program).
Rental or Primary Home: Which Should Secure the Line?
Securing the line with your primary home gets you more room, but it puts your residence behind your rental bets. Securing it with a rental keeps the exposure on the investment, at lower leverage. Neither choice is wrong. They suit different risk tolerances.
A line on your home can be larger because the caps are higher. The tradeoff is that a bad rental year can now threaten the place you live. The CFPB warns that if you can’t repay a HELOC, you could lose the home securing it.
A line on a rental you own is the investment-property HELOC proper. It is smaller, but a problem stays inside the investment.
Title also matters. On both programs, the property must be held by you as an individual or by your revocable living trust. An LLC, corporation, partnership, or irrevocable trust cannot hold title to the collateral. A rental already deeded to an LLC needs a vesting change, a line on a personally titled property, or a DSCR cash-out refinance instead, subject to lender program eligibility.
What Does the Line Approval Require?
The line is underwritten to you, not to the rent. The lender looks at credit, debt-to-income, and equity. A DSCR loan does the opposite and looks at the property.
The main rules on a rental line:
- Credit of 700 or better, scored on the primary wage earner’s report.
- Debt-to-income of 50% at most, calculated on the interest-only payment at the maximum draw.
- Individual or revocable-trust vesting.
- Eligible property types: single-family, 2-4 units, PUD, townhome, and condominium, including non-warrantable condos.
- Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned properties are not eligible.
Lines at or below $500,000 ordinarily use an automated valuation instead of a traditional appraisal. Because an investment line caps at $500,000, a rental line is structurally in that lane. You can still request a full appraisal.
Two exposure limits matter for portfolio investors. A borrower is limited to three lines in total. A borrower who owns more than 15 financed properties is not eligible. One line also supports one property. Equity in one rental cannot back a line on another.
Availability is narrower than the DSCR footprint. Equity lines are offered in a smaller set of states than the 41 markets where DSCR investor loans are available.
Will the Purchase Lender Accept the Money?
Not automatically. The line gets approved and drawn first. The DSCR purchase loan is a separate approval, and its lender decides what counts toward your cash to close.
Across the network, the treatment varies. Some programs accept a fully borrowed down payment, while others cap the borrowed share or want part of the down payment unborrowed. Reserves are often held to a stricter standard, and borrowed funds frequently do not count toward them. Agency conventional rules about borrowed funds do not carry over, because DSCR loans are not agency products.
So ask the purchase lender before you draw. Expect them to want the line’s terms and draw records, with the funds traced into your account and seasoned there.
Remember also that no true zero-down DSCR purchase exists. A line only changes where the down payment comes from.
| Purchase leverage | Down payment (% of price) |
|---|---|
| 80% LTV | 20% |
| 75% LTV | 25% |
| 85% LTV (select high-leverage programs, roughly 700+ score) | 15% |
Most DSCR purchase files land at 75%-80% LTV. The percentages above are what the line must cover, plus closing costs. The calculator can convert them to dollars for your price. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.
How Does the DSCR Test Treat the Line?
The DSCR test looks at the new rental only. Coverage is the rental’s monthly rent divided by its PITIA. The HELOC payment generally does not enter that ratio, but you still have to pay it from real cash flow.
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. The loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines.
Coverage of 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Stronger ratios open better leverage and pricing.
Clearing the test is not the same as positive cash flow. Repairs, vacancy, management, utilities, and capital expenses all sit outside the ratio.
| Test | Line approval | DSCR purchase approval |
|---|---|---|
| Underwritten to | You: credit, DTI, equity | The new rental’s income |
| Key number | CLTV and 50% DTI | Rent divided by PITIA |
| Does the HELOC payment count? | Yes, interest-only at max draw | Generally no |
| Still required | Title and property eligibility | Credit, reserves, and coverage |
A bigger down payment lowers the new loan and can lift coverage. It never erases leverage caps, credit floors, reserve rules, or property eligibility. Reserves vary by lender, leverage, and loan size. They are commonly around 6 months of PITIA, and a borrowed line often does not count toward them. The strongest files clear both tests: enough equity and enough rental coverage.
How Do You Size Lines Across a Portfolio?
Treat each line as one tool for one property, with a hard limit of three. Plan the sequence before the first draw.
At least 75% of an investment line is drawn at closing. You cannot leave the whole line untouched as a reserve. Interest accrues on that drawn balance from the start of the draw period. Borrowers can take later draws on what remains. The program that states a minimum subsequent draw sets it at $1,000. An open-end line also lets you repay and borrow again during the draw period, which the CFPB describes as the basic feature of a HELOC.
A rough sequencing logic for a multi-property owner:
1. Count your financed properties against the 15-property limit.
2. Pick which properties have the most room under the 70% cap.
3. Confirm the purchase lender’s borrowed-funds rule for the next deal.
4. Close and draw the line, then document the draw.
5. Repeat for the next acquisition only after the first rental covers itself.
A rental with little equity room is a poor fit for this. The line may be too small to matter, and it adds a second lien behind the first mortgage. Then the better route is usually a different source of cash.
What Happens When the Draw Period Ends?
The payment steps up. An investment line runs a 5-year interest-only draw, followed by a 25-year fully amortizing repayment period. The payment floats and does not convert to fixed. Many bank HELOCs run on a similar pattern, and NerdWallet describes a 10-year draw as typical at banks.
Stress-test two things before you commit. First, model the payment on the fully drawn line once amortization begins. Second, model it with the new rental vacant for a stretch. A fully borrowed down payment means two loans carried against one rent stream. The DSCR test ignores the line’s payment, but your bank account does not.
The line can also shrink. The FTC says a lender may freeze or reduce a line if the home’s value falls significantly or your finances change materially. A line you counted on can be smaller in the middle of an acquisition.
Is a HELOC the Wrong Tool Sometimes?
Yes, in four situations: the rental sits in an LLC, the equity is thin, you want a larger sum, or you would rather not carry two payments. A DSCR cash-out refinance can be a better fit in those cases.
| Factor | HELOC on a rental | DSCR cash-out refinance |
|---|---|---|
| Underwritten to | Your credit, DTI, equity | The property’s rental coverage |
| Leverage ceiling | 70% CLTV | Around 75% LTV on standard rentals; 70% on short-term rentals |
| First mortgage | Stays in place | Replaced |
| Title | Individual or revocable trust | LLC possible, subject to lender program eligibility |
| Seasoning | Not the main hurdle | About 6 months is the common expectation |
A cash-out refinance replaces your first mortgage, so it changes the whole debt on the property. A line leaves the first mortgage alone. The complete DSCR loans guide covers the purchase side in depth.
Common Misconceptions
Myth: rental line caps match primary-home caps. They do not. The rental ceiling is 70% CLTV on this network.
Myth: higher credit buys more leverage on a rental. It does not. On the network’s investment line, 700 and 720 reach the same 70% CLTV.
Myth: a drawn line is automatically accepted as a down payment. The purchase lender decides, and it can treat down payment, closing costs, and reserves differently.
Myth: line availability counts as reserves. Borrowed funds are often excluded from reserves.
Myth: a line means a zero-down purchase. No true zero-down DSCR purchase exists.
Myth: interest is always deductible. Not necessarily. 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.
Frequently Asked Questions
Can I use an investment property HELOC as the down payment on another rental?
Sometimes. The line itself is available, but the DSCR purchase lender decides whether drawn funds count. Some programs accept a fully borrowed down payment, while others cap the borrowed share. Confirm the rule before you draw.
What is the most I can borrow against a rental?
The ceiling is 70% CLTV on an investment property, up to a $500,000 maximum line. Existing liens come out of that room first. A heavily mortgaged rental may support little or nothing.
Does the HELOC payment count in the DSCR calculation?
Generally no. The ratio compares the new rental’s rent to its PITIA. The line’s payment still has to be paid from your cash flow, and it is part of the line’s own debt-to-income test.
Can an LLC-owned rental secure the line?
Not on this network. Title must sit with you as an individual or in your revocable living trust. An LLC-held rental needs a vesting change or a DSCR cash-out refinance instead.
How many lines can I hold across a portfolio?
Up to three, with one line per property. An owner with more than 15 financed properties is not eligible. Combined exposure also has a program cap.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage broker that arranges DSCR investor loans through select lenders in its wholesale network across 41 markets, including Washington, D.C. Equity lines are available in a narrower set of states. Every figure here is subject to lender guidelines and full file review, and nothing here is a commitment to lend. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
If you are considering a home equity line 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.
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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 – Can You Get a HELOC on an Investment Property
2. CFPB
3. FTC – Home Equity Loans and Home Equity Lines of Credit
This article is part of Lendmire’s investment property HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can You Get an Investment Property HELOC After a Quitclaim Deed? · Can You Get an Investment Property HELOC When Speed and Convenience Matter Most? · Can You Get an Investment Property HELOC Before Your Return Is Filed?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
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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
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.