How Much Can You Borrow on an Investment Property HELOC for Combined Leverage on a Rental?

The Quick Read: Usually, the most you can borrow is the property’s value times the lender’s combined loan-to-value cap, minus every lien already on it, and on the investment-property lines Lendmire brokers that cap is 70% CLTV, with a $500,000 maximum line and a 700 minimum credit score, subject to lender guidelines. CLTV means the first mortgage plus the line, divided by the property’s value. Rentals get lower caps than a primary home, and far fewer lenders offer the product.

• Formula: value × CLTV cap − existing liens = the most the line can be.
• Investment ceiling on this network: 70% CLTV, with lines from $25,000 to $500,000.
• Credit: on an investment line, 700 is a hard floor, and a score of 720 or higher does not raise the 70% ceiling.
• Title: an individual or a revocable living trust, not an LLC.
• Drawn on day one: at least 75% of the line is drawn at closing, so headroom becomes debt right away.

The Formula for Combined Leverage on a Rental

Combined leverage is every dollar of debt secured by the property, measured against its value. The line competes with your first mortgage for the same room under one cap. The order of the liens does not change the total.

The steps are simple:

1. Take the appraised or estimated value.

2. Multiply it by the CLTV cap.

3. Subtract the first mortgage balance and any other liens.

4. What remains is the most the line can be, before the dollar caps and credit checks apply.

Here are three worked examples, all in percentages of value. On this network’s investment lines, the cap is 70%.

A mortgaged rental. Say your first mortgage sits at 55% of value. The room under a 70% cap is 15% of value. Because at least 75% of the line is drawn at closing, most of that room becomes debt on day one.

A paid-off rental. With no first mortgage, the percentage cap allows a line up to 70% of value. The $500,000 maximum line binds first on a high-value rental. For lower-value properties, the percentage cap binds first.

A tightly leveraged rental. Suppose the first mortgage is already at 68% of value. Only 2% of value is left, and on most rentals that sliver is below the $25,000 minimum line. No line is possible.

The table shows how headroom shrinks as the first mortgage grows.

A larger first mortgage eats the room fast. Every point of existing leverage is a point you cannot borrow on the line.

What Sets the Ceiling on This Network

Credit above 700 does not buy more leverage on an investment line. Lendmire is a broker, and it arranges these lines through select wholesale partners. On the investment tier, 720 and 700 both reach 70% CLTV up to $500,000. The 700 minimum has no tier beneath it. A score above 700 helps you qualify but does not move the cap.

Several other limits shape the line:

• Line size. Investment lines run $25,000 to $500,000. Only primary-residence lines can go above $500,000.
• Valuation. Lines at or below $500,000 ordinarily use an automated valuation with no traditional appraisal, and an investment line always falls in that range. A higher CLTV may call for a second valuation, and you can request a full appraisal in any case.
• Debt-to-income (DTI). DTI is your monthly debts divided by your monthly income. The maximum is 50%, and the lender reviews your file on the interest-only payment calculated on the maximum draw. That tests the line as if you had borrowed all of it.
• Lien position. The line can sit in first or second position behind an existing mortgage.

Programs change, and every file is reviewed individually. Treat these as typical program ranges, not promises.

Why a Rental Line Is Smaller Than a Home Line

Lenders treat a rental as a riskier asset than the home you live in. NerdWallet says a rental HELOC is possible. It adds that you face a smaller pool of lenders, cannot borrow as much as against a primary home, may need multiple appraisals, and typically need at least 20% equity.

The wider market also reports higher caps than this network offers. Experian reports that lenders in the broader market typically cap rental lines at 80% of value. On the network Lendmire brokers through, an investment-property line tops out at 70% CLTV. Occupancy matters here. Primary-residence and second-home lines on the network reach as high as 90% CLTV, but only at a 720-or-better credit profile. That figure never applies to a rental.

The table compares the options you are likely weighing.

DSCR is the debt service coverage ratio, which compares monthly rent to the full monthly payment on a property. A DSCR cash-out refinance caps at about 75% LTV on standard rentals and 70% on short-term-rental collateral. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.

Key Terms Defined

HELOC: A home equity line of credit is a revolving line you borrow against the equity in a property. Equity is the value minus what you owe.

CLTV: Combined loan-to-value is all liens on the property, first mortgage plus line, divided by value.

Line limit: The line limit is the maximum you can borrow on the line. It is set by the CLTV cap, the dollar caps, and your file.

Draw period: The draw period is the stretch when you can borrow from the line and typically pay only interest. On this network’s investment lines, it is five years.

Repayment period: The repayment period is the stretch after the draw ends, when the balance fully amortizes. It is 25 years on investment lines.

Lien position: Lien position is where a loan ranks for repayment. A line behind your first mortgage is a second lien.

How Draws and Repayment Stack on Top of Your First Mortgage

Think of the line as a second payment that moves. The CFPB explains that a HELOC is an open-end line you can borrow against repeatedly, and that repayment often runs ten or 20 years. On the network’s investment lines, the draw runs five years with interest-only payments, then a 25-year repayment.

At least 75% of the line is drawn at closing. Pricing on these lines floats during both the draw and the repayment period. Your combined payment can move even if the first mortgage is fixed.

The same agency’s HELOC brochure lists two more risks. A lender can reduce your line if the property’s value drops. And if you sell the property, you generally must pay the HELOC off immediately. On a rental already near its cap, a modest drop in value can cut the room you counted on.

Run the stress test before you draw:

• Add the first mortgage payment and the line at its maximum draw.
• Compare that total with the rent after vacancy.
• Add repairs, management, and utilities on top.

A rental that only works when the line stays undrawn is not working.

Where Rental Lines Fail Before the Math Starts

Three things disqualify a rental before the CLTV math starts.

Title. The line requires fee simple or leasehold title held by an individual or a revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title. A property already deeded to an LLC needs a vesting change first, or a DSCR cash-out refinance instead. A DSCR loan can close in an LLC name, subject to lender program eligibility.

Property type. 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 properties are not.

Portfolio size. A borrower is limited to three lines on the network. A borrower with more than 15 financed properties is not eligible. Combined exposure caps also apply, and they vary by program.

One more practical point: the footprint is narrower than for DSCR loans. These lines are offered only in 16 states (AL, CA, CO, FL, GA, IN, MI, MT, NM, NC, OH, PA, TN, TX, VA, WA). Its DSCR investor loans cover 41 markets, including Washington, D.C.

Working Backward From the Line You Want

Start with the line you want and solve for the value you need:

Required value = (first mortgage + target line) ÷ 0.70

If your first mortgage and the target line together equal 65% of what the property is worth, the CLTV is 65% and you clear the 70% cap. If they equal 75%, you are over. You have three options. Shrink the line, pay down the first mortgage, or wait for value to rise.

Because the maximum line is $500,000 on an investment property, a bigger equity position does not raise the line past that point. Past the cap, the leftover equity stays on the table.

When a DSCR Cash-Out Makes More Sense

A HELOC adds a second lien and leaves your first mortgage alone. That helps when the first mortgage terms are worth keeping. It hurts when your leverage is already high, the property sits in an LLC, or your personal debt-to-income is tight. The line is also personal credit. The lender does not underwrite the rental’s rent coverage the way a DSCR lender does.

A DSCR cash-out refinance replaces the first mortgage. It qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Many select programs start at 1.00 coverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. A cash-out typically tops out at 75% LTV on standard rentals, with about 6 months of seasoning as the common expectation. Our complete DSCR loans guide covers the full parameters.

A clear 1.00 does not mean positive cash flow. DSCR compares rent to the monthly payment only. Repairs, vacancy, management, and utilities sit outside the ratio.

Next Steps

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. You can reach the team at 828-256-2183.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage broker that arranges DSCR investor loans and, in select states, home equity lines through its wholesale network of lenders. Lenders review eligibility, and every figure above is subject to lender guidelines and a full file review. Nothing here is a commitment to lend. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. NerdWallet

2. Experian – HELOC on an investment property

3. CFPB

4. CFPB – HELOC brochure