How Much Can You Borrow on an Investment Property HELOC for Investing in Mortgage Notes?

The Quick Read: The limit is a formula: the combined loan-to-value ceiling times the property’s value, minus the balance on the first mortgage. Across Lendmire’s wholesale network, that ceiling on an investment-property line is 70% CLTV, with a maximum line of $500,000, subject to lender guidelines and full file review. Buying notes with the money does not change that math, because the lender sizes the line off the property that secures it.

• A 700 credit score is the minimum, and the floor has no tier beneath it.
• The smallest line is $25,000. Larger lines are available only against a primary residence.
• The line is a standalone first or second lien, and at least 75% of it is drawn at closing.
• The property must be titled to you personally or to a revocable living trust. An LLC cannot hold title.
• A line like this is offered by Lendmire’s network in 16 states only. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.

How the Borrowing Limit Is Calculated

The maximum line equals the property value times the maximum CLTV, minus what you owe on the first mortgage. Combined loan-to-value adds the existing mortgage and the new line, then divides by the appraised or estimated value. The lender caps that total.

Run it in percentages. Say the first mortgage equals 45% of the property’s value. At a 70% CLTV ceiling, 25% of the value is left for the line. If the first mortgage equals 55% of value, only 15% is left. A property with no mortgage at all can reach the full 70%, but the $500,000 line cap still applies on an investment property.

Market-wide figures run higher than the network’s. Experian reports that an 80% loan-to-value cap is typical for investment-property lines, which is a market-wide figure and not a network one. On Lendmire’s network, an investment-property line tops out at 70% CLTV.

Credit score does not move that ceiling on an investment line. Both the 720 and 700 tiers reach 70% CLTV, and 700 is a hard floor with no tier beneath it. A higher score buys eligibility, not extra leverage.

Investment Property vs. Primary Residence on the Same Network

The same network treats occupancy very differently, and the investment-property ceiling is the lowest. Here is how the two compare.

The 90% figure exists only for a primary residence or second home at a 720-or-better credit profile. It never applies to a rental. A line above $500,000 is also primary-residence only. It caps at 75% CLTV and requires a full appraisal.

Some investors borrow against their own home to fund other investments, and that is a legitimate structure. It also raises the stakes, because the home secures the debt. NerdWallet notes that lenders treat investment-property lines as higher risk, which is why the pool of lenders is smaller and the limits are lower than against a primary home.

Why Buying Mortgage Notes Does Not Change the Limit

The note you buy is not the collateral. The line is secured by the property that carries the lien, so the CLTV test applies to that property alone. The lender does not size the line to the note’s purchase price, and the note’s coupon does not enter the formula.

Investors do ask whether a line can fund performing notes. One BiggerPockets thread shows exactly that question, and a commenter’s answer there is that the money can go to whatever the borrower wants. The practical gate is the lender’s own use policy, so confirm it before applying.

This is where an equity line differs from a DSCR loan. A DSCR loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. An equity line underwrites you personally, using credit, debt-to-income, and the value of the collateral. Rent from the property is not the test. DSCR compares rent to the full housing payment (principal, interest, taxes, insurance, and any HOA dues), and nothing else.

For the broader picture, Lendmire’s complete DSCR loans guide covers how that product is sized.

What the Lender Reviews Before Setting the Line

The network reviews credit, debt-to-income, valuation, and property type. Each one can lower the line below the formula’s answer.

Credit. An investment line requires a 700 minimum. The score model uses a single bureau, keyed to the primary wage earner. The report can be no more than 90 days old at closing, and rescores are not offered.

Debt-to-income. The ceiling is 50%. Because an investment line already requires a 700 score, the lower 45% limit that applies to profiles from 600 to 679 does not come into play here. The lender reviews your file on the interest-only payment calculated on the maximum draw, not on the balance you plan to use. A large line can crowd your ratio even if you draw only part of it.

Valuation. Because an investment line caps at $500,000 and full appraisals begin above that level, these lines run on automated valuation. A traditional appraisal is commonly not required, although you may request one, and a higher CLTV may call for a secondary valuation.

Property type. Single-family homes, 2-4 units, PUDs, townhomes, and condos, including non-warrantable condos, are eligible. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agriculturally zoned properties are not.

Portfolio limits. A borrower is limited to three lines. A borrower with more than 15 financed properties is not eligible. In NC, PA, TN, TX, and WA, a property listed for sale, or listed within the past 60 days, is ineligible.

Title Is the Sharpest Difference From a DSCR Loan

Only an individual borrower or a revocable living trust can hold title on an equity line. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot. Many rental investors hold property in an LLC, so this rule catches a lot of files.

A property already deeded to an LLC needs a vesting change before it can secure the line. The alternative is a DSCR cash-out refinance, which can be structured for LLC-titled properties, subject to lender program eligibility. Moving title can have its own consequences with the existing first-mortgage lender and the insurer, so sort that out before the application, not during it.

The Draw Structure and Why It Matters for Note Buyers

On an investment property, the line runs a 5-year interest-only draw, followed by a 25-year fully amortizing repayment period. At least 75% of the line is drawn at closing. Pricing floats through both periods and never converts to fixed.

Three consequences follow for a note buyer.

1. Interest starts on most of the line on day one. You cannot open a $500,000 line and leave it idle. Size the line to the notes you can actually buy.

2. The minimum is $25,000. Smaller note purchases fit the line only if you draw and deploy a larger block first.

3. The draw period ends. After year five, payments step up to cover principal. The CFPB describes this general structure of a draw period followed by repayment, and notes that variable pricing means payments can change.

The CFPB’s HELOC booklet walks through the logic with a worked example: an appraised value, an existing mortgage, and a potential line. That example follows the same subtraction used above.

Where Note Investing and a Floating Line Collide

A line that floats funding assets with fixed coupons can erode your spread over time. A BiggerPockets note-investing thread shows a commenter making that warning, along with a reminder to hold reserves for servicing, insurance, taxes, and foreclosure costs. That is a practical point, not a program rule.

The borrowing itself is personal debt secured by real property. If a note stops paying, the line stays. Performing and non-performing notes behave very differently as uses of borrowed money. Distressed Pro describes non-performing notes as typically 90 or more days past due. Those carry foreclosure, modification, or resale work, and the line has to cover that carrying cost.

The questions to settle before drawing are straightforward:

• Does the note’s coupon exceed your borrowing cost with room for servicing and losses?
• What is your exit if the note takes a long workout, since the draw period is finite?
• Do you have reserves that do not depend on the note paying?
• How does the full line affect your debt-to-income ratio, given the lender reviews your file on the maximum draw?

When the Equity Line Route Is Blocked

Several situations push an investor away from an equity line. The property sits in an LLC. The score is below 700. The state is outside the 16 where the line is brokered. The line needed exceeds $500,000 on a rental. The investor owns more than 15 financed properties.

In those cases, a DSCR cash-out refinance is the usual alternative. Across most of the network it tops out around 75% LTV on standard rentals, with about 6 months of seasoning as the common expectation. A coverage ratio of 1.00 is where select programs start, and stronger ratios open better pricing and leverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Reserves vary by lender, leverage, and loan size, commonly around 6 months of PITIA.

A DSCR file clears on rent against the payment, and that is all it measures. Repairs, vacancy, management, utilities, and capital expenses sit outside the ratio, so clearing 1.00 is not the same as positive cash flow. Select lenders also offer extended terms and interest-only periods.

Key Terms Defined

Combined loan-to-value (CLTV): the first mortgage plus the new line, divided by the property’s value.

Draw period: the stretch when you can borrow from the line, which is five years on an investment-property line here.

Repayment period: the stretch after the draw ends, when you pay down principal and interest, which is 25 years here.

Lien position: whether the line sits first or second behind another mortgage on the same property.

Performing note: a mortgage note whose borrower is paying as agreed.

Non-performing note: a mortgage note whose borrower has fallen behind, commonly by 90 or more days.

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. Reach the team at 828-256-2183 or request a quote.

For current guidelines and terms, see Lendmire’s investment-property HELOC programs page.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage broker. Home equity lines of credit — on a primary residence, a second home or an investment property — are arranged through wholesale lenders in Lendmire’s 16 full-service states, and every line is underwritten by the lender under its program guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. Experian – HELOC on investment property

2. NerdWallet – HELOC on an investment property

3. BiggerPockets thread

4. CFPB – What is a home equity line of credit

5. CFPB – What You Should Know About HELOCs

6. biggerpockets.com: HELOC to Invest in Notes

7. Distressed Pro