How Much Can You Borrow on an Investment Property HELOC When the Home Is Still?

The Quick Read: Usually you can borrow up to 70% of the property’s value across all loans, minus every lien still on it, and the line stops at $500,000 on the network Lendmire brokers through, so a large first mortgage can leave little or no room.

• The ceiling on an investment-property line is 70% combined loan-to-value (CLTV), and no credit tier raises it.
• Your first mortgage uses up part of that room before you apply.
• The line runs from $25,000 to $500,000. If the math lands below the minimum, there is no line.
• The credit floor is 700, and the line is a personal-credit product rather than a rent-based one.
• Title must sit with you personally or in a revocable living trust. An LLC cannot hold it.

This article reads “still” as “still carrying a first mortgage.” That is the most common situation. The same math applies to any rental with a lien on it.

What Is the Formula for How Much You Can Borrow?

The formula is short: maximum line = property value × the CLTV ceiling − every lien already on the property. Then the lender’s dollar cap applies on top.

Lenders size equity lines this way across the market. Equity is what the home is worth minus what you owe. The line is a share of value, less the mortgage balance. The CFPB’s HELOC booklet walks through that method, and it is the same one used here.

On the network, the ceiling for an investment property is 70% CLTV. The cap is $500,000. The floor is $25,000. Those three numbers drive every result below.

NerdWallet reports that market-wide maximums on investment-property lines run up to 80%, with many lenders sitting below 70%. Through the network’s investment line, the ceiling is 70% CLTV. A market-wide maximum is not a figure to plan around here.

How Does the Existing Mortgage Change the Number?

Your first mortgage counts against the 70% before the new line adds anything. The new line is a second lien, or it can sit in first position if the property is free and clear. Both the first mortgage and the full new credit limit go into the test, whether you draw all of it or not.

Here is how that plays out on a rental. The table shows the balance as a share of value, not as dollars, so you can map it to your own property.

Two things come out of this table. On a high-value, low-debt rental, the $500,000 cap stops you before the 70% does. On a recently bought or heavily financed rental, the percentage test stops you first.

Run your own numbers in this order:

1. Take the property’s value.

2. Multiply by 70%.

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

4. Compare the result to the $500,000 cap. The smaller number is your ceiling.

5. Check that result against the $25,000 minimum.

A simple calculator can walk through these steps, but treat its output as an illustrative estimate, not a quote.

Why Is the Investment Ceiling Lower Than on a Primary Home?

Lenders treat a rental as higher risk than the house you live in. Borrowers tend to protect their own home first if money gets tight. So the network’s occupancy tiers are different.

On a primary residence or second home, the ceiling can reach 90% CLTV, but only at a 720 or better credit profile. On an investment property, the ceiling is 70%, with no tier above it. Do not carry a primary-home figure over to a rental.

The credit tiers also work differently. Investment lines have just two tiers, and both 720 and 700 stop at the same 70% ceiling. Credit above 700 buys eligibility, not leverage. And 700 is a hard floor, with no tier beneath it.

What Qualifies You Besides Equity?

Equity is only one test. The network’s investment line is also a personal-credit product. It qualifies the borrower, not the rent. That is the sharpest difference from a DSCR loan, which looks at whether the rent covers the payment.

• Credit: a 700 minimum on an investment line, with a single score keyed to the primary wage earner. The report must be no more than 90 days old at closing.
• Debt-to-income: 50% maximum. A ratio above 45% needs at least a 680 score, and the review uses the interest-only payment on the full line.
• Property type: 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 properties are not eligible.
• Exposure: a borrower is limited to three lines, and an investor with more than 15 financed properties is not eligible.
• Availability: the HELOC product is offered in Lendmire’s 16 full-service states. That is narrower than the broader DSCR footprint of 41 markets, including Washington, D.C.

Market surveys often list six months or more of reserves and at least 20% equity as typical asks on rental lines, per NerdWallet. The network’s equity test is the 70% CLTV ceiling itself. Every figure stays subject to lender guidelines and a full file review.

How Is the Property Valued?

The line tops out at $500,000, and full appraisals start only above that amount. So an investment line sits in the automated-valuation lane. Most close with no traditional appraisal. A higher CLTV can trigger a secondary valuation, and a borrower can ask for a full appraisal at any time.

This matters for your math. The value you plug in is a starting point. If the automated number comes in lower than your own estimate, every figure in the table above shrinks with it. A full appraisal request is worth considering when you believe the automated number is low.

How Does the Line Work After Closing?

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

That structure matters for cash flow. The CFPB’s HELOC explainer describes the draw period and the repayment period that follow it. When the draw ends, the payment structure changes. Investors who fund a second purchase with the line should model the repayment phase, not just the interest-only years.

The line is a standalone product in first or second lien position. Your existing first mortgage stays untouched. That is the main reason investors pick it over a refinance when the first loan is one they want to keep.

Who Can Hold Title?

Title must be held by the individual borrower or by an inter vivos revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title.

If your rental is already deeded to an LLC, you have two choices. You can change the vesting before applying, which carries its own legal and lender steps. Or you can skip the line and use a DSCR cash-out refinance, which is built for entity ownership, subject to lender program eligibility.

Key Terms Defined

Combined loan-to-value (CLTV): all the loans secured by the property added together, divided by its value. Investopedia gives the standard definition.

Second lien: a loan that sits behind your first mortgage in repayment priority.

Draw period: the stretch when you can borrow from the line and pay interest only.

Equity: what the property is worth minus what you owe on it.

Automated valuation: a computer-generated value estimate used in place of a full appraisal.

When the Line Doesn’t Fit, What Else Works?

Some files return no room, or a result under $25,000. A few paths are worth comparing.

A line on your own home can reach a higher ceiling, but it puts your residence behind the debt. If you fall behind on the investment, the lender can pursue the house. The CFPB booklet is direct about that risk.

A DSCR cash-out refinance replaces the first mortgage. It typically asks for about six months of seasoning and a credit score near 660 on most programs, though a 620 floor exists in parts of the network. It qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. That makes it the better fit for LLC-held rentals and for investors whose personal debt-to-income is already stretched. Lendmire’s complete DSCR loans guide covers the coverage test in full.

One caution on a DSCR cash-out. If your current first mortgage is one you want to keep, a refinance reprices the whole balance. That tradeoff is the real decision, and it is why the second-lien line exists.

For the qualification side, Lendmire’s piece How to Qualify for an Investment Property HELOC When the Home Is Still in the Estate covers the estate scenario.

What Are the Risks?

The risks on a second-lien line are specific.

• Foreclosure exposure. The line is secured by the rental. Missing payments puts the property at risk.
• Payment shift. The interest-only draw ends and amortizing repayment starts. The payment can step up.
• Floating pricing. The cost moves through the whole term and never fixes.
• Value drops. The CFPB’s HELOC materials cover fees and terms, and lines can be reduced if the home’s value falls. A lower automated valuation can also shrink your starting math.
• Sale of the property. The line generally must be paid off when you sell.

The line is also not a DSCR product. A DSCR test compares rent to the full monthly obligation. Clearing a coverage ratio is not the same as positive cash flow, because repairs, vacancy, management, and utilities sit outside it. The same logic applies to this line. A rental can qualify on paper and still run thin.

Next Step

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 through the quote request page. Lendmire is a broker and arranges financing through select lenders in its wholesale network. This is not a commitment to lend.

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

About Lendmire

Lendmire — NMLS# 2371349 — is a mortgage broker that arranges home equity lines of credit in its 16 full-service states through wholesale lenders, on primary residences, second homes and investment properties. Every line is subject to the lender’s guidelines and full underwriting. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

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

2. NerdWallet

3. CFPB’s HELOC explainer

4. Investopedia – Combined Loan-to-Value (CLTV)