How Much Can You Borrow on an Investment Property HELOC With 30% Equity in the Property?

The Quick Read: Usually very little, and often nothing, because an investment property line through select lenders in Lendmire’s wholesale network caps total debt at 70% of the property’s value, and 30% equity means a first mortgage already uses that full 70%, so a new line has no room left unless you own more than 30% equity.

• The maximum line equals the property value times the combined loan-to-value cap, minus every lien already on the property.
• On the network’s investment-property lines, the ceiling is 70% combined loan-to-value, and the maximum line is $500,000.
• Each extra 5% of equity above 30% opens roughly 5% of the property’s value as line room, before other limits apply.
• Credit of at least 700, a 50% maximum debt-to-income ratio, and individual ownership (not an LLC) also decide eligibility.
• If the line comes out at zero or very small, a DSCR cash-out refinance is the usual alternative.

How Is the Maximum Line Calculated?

The maximum line is the property value times the lender’s combined loan-to-value cap, minus what you already owe. That is the whole formula. The lender picks the cap, and your equity only tells you how much cushion exists before the cap applies.

Many investors treat the 30% as the amount they can borrow. It is not. The federal consumer-finance regulator’s consumer booklet on home equity lines describes the same method: the lender takes a percentage of the home’s value and subtracts what you owe. The booklet speaks to primary homes, so the percentage it uses does not carry over to rentals.

Here is the method in three steps:

1. Multiply the property value by the cap. On an investment property in Lendmire’s network, the cap is 70%.

2. Add up every loan secured by the property. A first mortgage, a second mortgage, and any lien count.

3. Subtract the second number from the first. What remains is the most the line can be, before other limits.

Investment lines are tighter than lines on a primary home. NerdWallet’s explainer on HELOCs for investment properties says the lender pool is smaller and the borrowing amount lower than on a primary residence. It also says lenders see more default risk on rentals. That matches what you see across the network: a different ceiling for each occupancy type, and the investment ceiling is the lowest.

What Does 30% Equity Actually Leave You?

With 30% equity, you have 70% of the value in debt, so at a 70% cap you have no room. The table below shows how room grows as equity grows. Every figure is a percentage of the property’s value, and the first mortgage is the only existing lien.

Read the first row again. It is the cleanest way to see why this question has a short answer. A 70% ceiling is another way of saying that 30% of the value must stay untouched. If you already sit at 30% equity, the cushion the lender wants is the same cushion you have.

This also clears up a common confusion about whether 30% is measured before or after the line. The 70% cap leaves 30% in place after the line is drawn. So an owner with exactly 30% equity today has nothing left to borrow, while an owner with 40% equity can borrow into the extra 10%.

Market figures run higher on paper. White Coat Investor lists an LTV of no more than 80% among typical requirements for investment-property lines in the broader market. The network’s investment-property ceiling is 70% combined loan-to-value, and that is the figure that applies to files placed through Lendmire.

Credit above 700 does not raise that number. Investment lines have only two credit tiers, 720 and 700, and both reach 70%, so a higher score buys eligibility, not extra leverage. And 700 is a hard floor, with no tier beneath it.

What Happens If the Value Moves?

A small change in value can swing the result, because the cap applies to the new value. Consider an investor with a first mortgage equal to 70% of today’s value. That investor has no room now.

Say the property then appreciates 5%. The same first mortgage now equals about 66.7% of the new value. That leaves roughly 3.3% of the new value as room at the 70% cap. These figures are hypothetical illustrations of the arithmetic, not market statistics or forecasts of appreciation in any particular area.

The same thing works in reverse. Take an owner with 35% equity and a first mortgage at 65% of value. If the value slips 5%, that mortgage becomes about 68.4% of the new value, and the room shrinks to about 1.6%. A 5% value drop takes away about two-thirds of the available room.

Valuation matters here for another reason. Because an investment line caps at $500,000, and full appraisals begin only above $500,000, an investment line normally runs on an automated valuation. It commonly closes without a traditional appraisal. You can still request a full appraisal if you think the automated number undersells the property, and a higher combined loan-to-value may call for a second valuation.

Key Terms Defined

Equity: the property’s value minus what you owe on it. The CFPB’s plain-language HELOC page uses this same definition.

CLTV (combined loan-to-value): all loans secured by the property, added together, divided by the property’s value. Wall Street Prep’s CLTV explainer shows worked examples of the calculation.

HELOC: a home equity line of credit, which works like a revolving credit line secured by the property. You draw, repay, and draw again during the draw period.

Draw period: the stretch when you can borrow from the line and, on the network’s investment lines, pay interest only. Repayment follows, and the balance then amortizes.

Cushion: the equity the lender requires you to leave in the property. At a 70% cap, the cushion is 30% of value.

DSCR (debt service coverage ratio): a rent-based ratio used on investor loans. It compares a property’s monthly rent to its full monthly payment, including principal, interest, taxes, insurance and any HOA dues.

What Else Limits the Line Besides Equity?

Equity is only the first test. Even with room under the cap, the borrower and the property must also fit the program. Because the line is underwritten to you personally, rent supports the file but does not decide it.

Credit. The minimum on an investment line is 700, and the lender uses a single-bureau score tied to the primary wage earner. The report must be no more than 90 days old at closing. A bankruptcy needs 4 years of seasoning from discharge or dismissal. Foreclosure history follows a 7-year path, and a deed-in-lieu, pre-foreclosure or short sale follows a 4-year path.

Debt-to-income. The maximum is 50%. The lender reviews your file on the interest-only payment calculated on the maximum draw, not on your actual balance. A wide-open line therefore weighs on your ratio the day you close, even if you draw nothing more.

Line size. Investment lines run from $25,000 to $500,000. A sliver of room can fall below the $25,000 minimum, which ends the conversation before it starts. At least 75% of the line is drawn at closing, so this is not a pure standby line.

Ownership. The borrower must hold title individually or in a revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind or land trusts cannot hold title. This is the sharpest structural difference from a DSCR loan. A rental already deeded to an LLC needs a vesting change first, or a DSCR cash-out instead, subject to lender program eligibility.

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

Exposure. A borrower is limited to three lines, and an owner with more than 15 financed properties is not eligible. In Indiana, North Carolina, Pennsylvania, Tennessee, Texas and Washington, a property listed for sale, or listed within the past 60 days, is ineligible.

Availability. HELOC placement is limited to Lendmire’s 16 full-service states. That is narrower than the 41-market DSCR footprint. Lendmire is a broker, so every figure is subject to lender guidelines and full file review, and nothing here is a commitment to lend.

Does the Full Line Count, or Just What You Draw?

Lenders generally test the full line limit, not just the balance. In a combined loan-to-value test, an undrawn line still counts at its maximum. That is why a lender cannot approve a line that, once counted in full, takes you above the cap.

Investment lines run a single structure: a 5-year interest-only draw followed by a 25-year fully amortizing repayment. If you are comparing offers, make sure each quoted figure carries its own draw and repayment terms.

What if the Line Comes Out Too Small?

When the formula returns zero, or a number below the project’s cost, the next question is which tool fits your equity. Three options are common. A second-lien equity line is what we have covered. A cash-out refinance replaces your first mortgage with a larger one. A DSCR cash-out refinance does the same, but drives lender review primarily on property-level rental income covering the payment, subject to lender guidelines.

The cash-out ceiling is around 75% on standard rentals across most of the network, and 70% on short-term-rental collateral. At 30% equity, a 75% ceiling leaves room for roughly 5% of the value in new cash. The new loan replaces your whole first mortgage, though, so the balance rises and rent coverage falls. Strong coverage is what keeps that deal viable, and coverage on this product starts at 1.00 for select programs. A separate select-lender path takes coverage below 1.00 with leverage and terms adjusted.

Clearing 1.00 does not mean the property cash flows. DSCR compares rent to the payment only. Repairs, vacancy, management, utilities and capital expenses all sit outside it. You can read the full mechanics in Lendmire’s complete DSCR loans guide.

Keeping a low-cost first mortgage is the usual reason investors prefer a second lien. A line leaves that loan alone, while a refinance reprices the whole balance. That is a real advantage, but it only matters when the line actually has room.

Think of it as two tests. A line asks whether you have enough equity and a strong enough personal file. A DSCR loan asks whether the rent can carry the new payment. The strongest files clear both.

Pros, Cons and Risks at 30% Equity

The upside is real, but it is small at this equity level. A line keeps your first mortgage in place and gives you borrowing capacity you can draw on as needs arise. Interest-only payments during the draw period are lighter than amortizing payments.

The downsides are larger:

• Little or no room. At 30% equity, the 70% cap is already used.
• Floating pricing. The line never converts to fixed, so your cost can move.
• Personal exposure. The line qualifies you, so a stretched debt-to-income ratio matters.
• Value risk. A dip in value can shrink the room, and a weak market can leave you with a cap that no longer fits the balance.
• Ownership limits. An LLC cannot hold title.

Using a line for a down payment on another rental also adds debt to your personal file.

One more caution applies to anyone who rents out their own home. The CFPB booklet warns that renting your home to others may be prohibited by the terms of your line. Read the occupancy language before you assume a line on a primary home covers a rental.

Before You Apply: A Short Checklist

Gather these numbers first, and you will know in minutes whether the line makes sense:

1. Your current property value, ideally from a recent valuation. 2. The balance on every loan secured by the property. 3. Your equity percentage, which is value minus balances, divided by value. 4. Your credit score, checked against the 700 floor. 5. Your monthly debts and gross income, to estimate your ratio against the 50% limit. 6. How the property is titled, since an LLC cannot hold title on a line. 7. Whether the property is listed or recently listed, and its type.

If your equity is 30% or less, skip the HELOC and price a DSCR cash-out refinance instead. If it is above 30%, run the formula and check the result against the $25,000 minimum, since room of only a few points of value may fall below that minimum.

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 is a mortgage brokerage (NMLS# 2371349) arranging home equity lines of credit — primary-residence, second-home and investment-property lines — through a wholesale lending network in its 16 full-service states. Eligibility is determined by the lender on each file. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFPB – What you should know about home equity lines of credit (booklet)

2. NerdWallet’s explainer on HELOCs for investment properties

3. White Coat Investor – HELOC on investment property

4. CFPB’s plain-language HELOC page

5. Wall Street Prep – Combined loan-to-value (CLTV)