How Much Can You Borrow on an Investment Property HELOC as First Lien or Second Lien?

The Quick Read: It depends on what is already recorded against the property, but the math is identical in either lien position: you multiply the property’s value by the 70% combined-loan-to-value ceiling on an investment line, subtract every lien already recorded, and then the $500,000 maximum line may cut the result further, subject to lender guidelines.

• Combined loan-to-value (CLTV) is every loan against the property, including the full new line limit, divided by the property’s value.
• On the investment-property lines in Lendmire’s wholesale network, 70% CLTV is the ceiling in first or second position.
• Lines run from $25,000 to $500,000, and the title must sit with an individual or a revocable living trust.
• On an investment line, a 700 credit score is the floor and a 720 score reaches the same 70% ceiling, so a higher score adds eligibility rather than leverage.
• Lendmire is a broker. The lenders in its network review each file and make the decision. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.

Key Terms Defined

Lien position is the order in which loans get repaid from the property if it is sold or foreclosed. The first lien gets paid first.

HELOC is a home equity line of credit. It is a revolving line secured by the property that you draw from as needed.

Equity is the property’s value minus what you owe against it.

CLTV adds every recorded loan, plus the full limit of the new line, and divides by value. Lenders count the whole limit, not just the amount you have drawn.

Draw period is the stretch when you can borrow from the line, often paying only interest. The repayment period follows, when the balance amortizes.

How Is the Maximum Line Calculated?

Take the property’s value and multiply it by the lender’s CLTV ceiling. Subtract every lien already recorded. What remains is your room. Then check that result against the lender’s dollar minimum and maximum.

On an investment property in Lendmire’s network, the ceiling is 70% CLTV and the line runs from $25,000 to $500,000. The line must be at least $25,000, so a thin sliver of room can mean no line at all.

Rentals get a tighter ceiling than a home you live in. NerdWallet notes that an investment-property HELOC is harder to get than one on a primary home, that fewer lenders offer one, and that some lenders order multiple appraisals. For comparison, a line on your own primary residence in this network can reach 90% CLTV, but only at a 720-or-better credit profile. On an investment property, 70% is the top, with no tier above it.

Does Lien Position Change the Number?

Not in the arithmetic. Lien position changes which loans are already subtracted. In this network, an investment line is a standalone line that can sit in first or second position, and the 70% ceiling applies either way.

The practical difference is how much room you start with. A second-lien line only gets whatever your first mortgage leaves under the ceiling. A first-lien line starts from the full ceiling, but if it pays off an old mortgage, that payoff comes out of the line before you see any cash.

Which Position Are You in?

Start with what is recorded on the title today. Three situations cover most investors.

You keep your existing mortgage. The new line sits behind it, which makes it a second mortgage. The CFPB says that if you already have a mortgage, a new HELOC is a second mortgage you pay on top of the first. You also keep whatever terms your first loan carries. Your room is 70% of value minus the first-mortgage balance.

The rental is free and clear. With nothing recorded ahead of it, the line is the first lien. A HELOC is not always a second mortgage. It is second only when something sits ahead of it. Your room is the full 70% of value, until the $500,000 cap binds.

You pay off the old mortgage with the line. The new line takes first position, and the old loan is retired at closing. Because nothing else remains recorded, the 70% ceiling is tested on the line alone, but the payoff uses part of the line. At least 75% of an investment line is drawn at closing in this network, so a payoff fits that structure well.

The CFPB’s HELOC booklet shows the same method in plain terms. A lender takes a percentage of the appraised value, using 75% as its example, and subtracts what is owed on the mortgage. Network ceilings on investment lines are lower than that example.

Worked Examples in Percentages

These examples use percentages of value only, so you can apply them to any property. All three assume a 70% CLTV ceiling on an investment line, a borrower at 700 or above, and room above the $25,000 minimum.

• First mortgage at 55% of value. Room is 15% of value as a second-lien line.
• First mortgage at 65% of value. Room is 5% of value. On most rentals that falls below the $25,000 minimum, so no line may be possible.
• No mortgage at all. Room is 70% of value as a first-lien line, then the dollar cap applies.

The same property with a first mortgage at 40% of value shows why position matters less than the balance. As a second lien, room is 30% of value. As a first-lien line that pays off that mortgage, the line can be sized to 70%, but 40% of value goes straight to the payoff. The cash you walk away with is again 30% of value, minus costs.

When the Dollar Cap or the Valuation Gets in the Way

Which limit binds first? On a higher-value rental, the $500,000 maximum line binds before the percentage does. On a modest rental with a big first mortgage, the percentage binds first and the line may not clear the $25,000 minimum. Apply the percentage ceiling first, then the dollar limits.

Valuation is the other lever. Because an investment line caps at $500,000, it normally runs on an automated valuation, and a traditional appraisal is commonly not needed. A higher CLTV may call for a secondary valuation. An automated estimate can miss a recent rehab, so if you just renovated, you can request a full appraisal in any case.

Your credit score works differently than most people expect. Both the 720 and 700 tiers reach 70% CLTV on an investment line. A 740 score does not buy you more leverage. It only keeps you above the 700 floor with margin.

Who Qualifies, and Who Cannot Hold Title

A HELOC on a rental is underwritten on you, not on the rent. That is the sharpest contrast with a DSCR loan, which qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. A line is reviewed on credit and debt-to-income, which tops out at 50% on this product. It is qualified on the interest-only payment calculated on the maximum draw. A line that floats in price and never converts to fixed makes that stress test matter.

Other points that decide eligibility:

• Title. The property must be held by you personally or by a revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title. A rental already deeded to an LLC needs a vesting change, or a DSCR cash-out refinance instead, subject to lender program eligibility.
• Property types. Single-family, 2-4 units, PUDs, townhomes, and condominiums, including non-warrantable ones, are eligible. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural zoning are not offered.
• Exposure. A borrower is limited to three lines, and a borrower with more than 15 financed properties is not eligible.
• Credit history. A bankruptcy needs 4 years of seasoning. Foreclosure history on an investment file follows a 7-year path, or 4 years for a short sale or deed in lieu.
• Location. HELOC availability covers 16 states, which is narrower than the DSCR footprint of 41 markets, including Washington, D.C.

HELOC or Cash-Out Refinance?

Keep the first mortgage, or replace it? That is the real decision. A HELOC leaves your existing first loan alone and adds a revolving line behind it. A cash-out refinance replaces the first loan with a new, larger one.

A short-term-rental property is stricter on the cash-out side, where the ceiling is around 70%. Leverage on a cash-out is not the only factor, so a larger ceiling does not automatically make it the better tool. For the bigger picture, see the complete DSCR loans guide.

Keep in mind that a line suits short-horizon uses better than permanent financing. The draw period ends, and the balance then amortizes over the repayment period.

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. Start by gathering your first-mortgage balance, a rough value, and how the property is titled. Those three facts decide most of the answer.

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.

References

1. NerdWallet – Can you get a HELOC on an investment property

2. CFPB – Home equity loan vs HELOC

3. CFPB – What you should know about HELOCs (booklet)