How Much Can You Borrow on an Investment Property HELOC on One Rental to Buy the Next?

The Quick Read: Usually up to 70% combined loan-to-value (CLTV) on the rental, minus what you already owe on it, and never more than $500,000 on an investment line, because lenders cap leverage on rentals below what they allow on a home you live in. Subject to lender guidelines, the line must also fit your personal credit and debt-to-income profile.

• Investment-property lines through Lendmire’s wholesale network top out at 70% CLTV and $500,000.
• A credit score of 700 or better is the floor, and 720 does not buy more leverage.
• The rental must be titled to you or a revocable trust, not an LLC.
• The line is personal debt, so its payment counts against your debt-to-income ratio on the next purchase.
• A line above $500,000 is available only on a primary residence, not on a rental. Terms depend on the lender’s guidelines, the property type, the leverage, and a full review of the credit profile.

How the Amount Gets Calculated

The line equals the property value times the CLTV cap, minus every lien already on the property. That is the whole formula. The CFPB’s HELOC booklet describes the same logic: lenders take a percentage of appraised value, then subtract the mortgage balance owed. They also weigh your ability to repay and your credit history.

On this network, the investment cap is 70% CLTV. Here is how that plays out with percentages only:

Then apply the dollar ceiling. A line on an investment property runs from $25,000 to $500,000 in most states (Michigan’s floor is $10,000). A paid-off rental worth a large amount still stops at $500,000. A thin-equity rental may produce a number too small to be worth the setup.

NerdWallet reports that lenders generally see rentals as higher default risk and apply stricter standards than on a primary home. The figure that governs your file is the network’s 70% CLTV on an investment property, not a market-wide average.

Key Terms Defined

Combined loan-to-value (CLTV): Every loan secured by the property, added together, divided by the property’s value.

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

Repayment period: The stretch after the draw period, when the balance amortizes down.

DSCR: A ratio of a property’s rent to its full monthly housing payment, used to qualify DSCR loans on the property’s income rather than yours.

Source of funds: The paper trail the purchase lender wants showing where your down payment came from.

Who Can Open a Line on a Rental?

Individuals and revocable living trusts can. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title on these lines. This is the sharpest structural gap between a HELOC and a DSCR loan, which is commonly written to entity borrowers, subject to lender program eligibility. A rental already deeded to an LLC needs a vesting change or a DSCR cash-out refinance instead.

Eligible property types include single-family homes, 2-4 units, PUDs, townhomes, and condominiums, including non-warrantable condos. Not eligible: manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned property.

Availability is also narrower than the DSCR footprint. Lendmire arranges these lines in 16 states only: AL, CA, CO, FL, GA, IN, MI, MT, NM, NC, OH, PA, TN, TX, VA, and WA. The DSCR program covers 41 markets, including Washington, D.C.

Credit, Debt Load, and Valuation

The investment tier is simple. A 700 score is a hard floor with no tier beneath it. Both 720 and 700 reach the same 70% CLTV, so a higher score buys eligibility, not extra leverage. The network scores off a single bureau keyed to the primary wage earner, and the report can be no more than 90 days old at closing.

Debt-to-income runs to a 50% maximum. The lender reviews your file on the interest-only payment calculated on the maximum draw, not on what you plan to borrow. That detail catches people. A line sized at $400,000 gets underwritten as if fully drawn.

An investment line caps at $500,000, and full appraisals are required only on lines above that amount. The file therefore sits in the automated-valuation lane, and many lines close with no traditional appraisal. You can still request a full appraisal. A secondary valuation is possible in some files, though the investment ceiling stays at 70% CLTV either way.

Structure: What You Are Actually Signing

An investment line is a standalone line in first or second lien position. It runs a 5-year interest-only draw followed by a 25-year fully amortizing repayment. At least 75% of the line is drawn at closing. After closing, the minimum draw is $1,000 (Texas is $4,000). Pricing floats through both the draw and repayment periods and never converts to fixed. The FTC describes HELOCs the same way: revolving, with a typically variable APR.

Two consequences matter for a buyer. First, the 75% closing draw means you cannot open a large line and leave it undrawn as a standby reserve; most of it is borrowed and carrying interest on day one. Second, a floating payment means your carry cost can move after you have already bought the next property.

How the Draw Becomes a Down Payment

Here is the sequence that works, step by step.

1. Size backward from the target. Add the down payment (typically 20%-25% on a DSCR purchase), closing costs, and reserves. That total is the draw you need.

2. Test the line against the cap. Run value times 70%, minus liens. If the result falls short, the plan needs a smaller target, a cheaper purchase, or a different source of cash.

3. Open and fund the line. Expect the 75% closing draw to land in your account. Park it where the purchase lender can document it.

4. Present the draw as borrowed funds. The purchase lender applies its own source-of-funds and reserve rules. Borrowed down payments are generally acceptable on DSCR purchases but must be documented.

5. Expect the line payment to count. On a DSCR purchase, qualification runs primarily on property-level rental income covering that property’s payment, subject to lender guidelines. Your personal debt matters less there. On a conventional purchase, the HELOC payment lands in your debt-to-income ratio.

6. Plan the payoff. The balance does not retire itself. Decide in advance whether you repay by refinancing, selling, or amortizing.

Reserves vary by lender, leverage, loan size, and transaction type on the DSCR side. They commonly run around 6 months of PITIA, and larger loans step up. Reserves held in a line you already drew are cash you owe, not cash you own.

The Real Test: Does the Next Rental Carry Both Debts?

Clearing a coverage ratio is not the same as positive cash flow. DSCR compares rent to PITIA only; repairs, vacancy, management, utilities, and capex sit outside it. Add a HELOC payment on the first rental and a floating rate on top, and the portfolio can run thin even when the new property passes.

Picture an investor who draws against a rental with a modest first mortgage and puts 25% down on a second rental whose rent clears the 1.00 range. The new loan is reviewed on its own rent. The investor still owes the interest-only payment on the line, and it has to be paid from the first property’s income. If the first rental barely covers its own mortgage, the line payment comes from the investor’s wages. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.

Stress-test two numbers before drawing:

• The new property’s coverage ratio on its own debt.
• The first rental’s net income after its mortgage and the new line payment, with rates and vacancy both moved against you.

For most programs 1.00 is the standard starting point, and a ratio right at 1.00 leaves no room for the property to absorb the HELOC payment. A ratio in the 1.2x range or stronger gives the new asset breathing room. Select lenders in the network do offer sub-1.00 coverage, with leverage and terms adjusted, but that path asks for more cash down, which is the opposite of what a line-funded buyer wants.

HELOC Compared With the Alternatives

A primary-home line follows its own occupancy tiers. The network ceiling reaches 90% CLTV on primary residences and second homes, but only at a 720-or-better credit profile. That figure never applies to a rental. Larger lines work differently: anything above $500,000 is available only on a primary residence, requires a 700 score (720 on the 5-year draw structure), and needs a full appraisal. Those large lines cap at 75% CLTV, well below the 90% top tier. Using your home to buy a rental puts the roof over your head behind the new purchase. Exact terms depend on lender and investor guidelines, credit profile, reserves, and property review.

A DSCR cash-out refinance lands differently. Most of the network tops out around 75% LTV, with about 6 months of seasoning common, and it underwrites on property rent. For a deeper side-by-side, see Lendmire’s piece on investment property HELOC versus DSCR cash-out refinance. NerdWallet also lists cash-out refinances and a DSCR second mortgage among the alternatives to a rental HELOC. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.

Limits That Quietly Cap Your Plan

• Exposure: A borrower is limited to three lines. Combined exposure caps at $2,000,000 on the higher-leverage program and $750,000 on the program with the longer runway. Anyone owning more than 15 financed properties is not eligible.
• Derogatory history: A bankruptcy needs 4 years of seasoning from discharge or dismissal. Investment files follow a 7-year seasoning path for foreclosure and 4 years for deed-in-lieu, pre-foreclosure, or short sale.
• Listed property: A property listed for sale, or listed within the past 60 days, is ineligible in NC, PA, TN, TX, and WA.
• Texas: Properties are limited to 10 acres. The homestead rules bind primary residences only; investment properties are eligible as non-homestead transactions.
• New Mexico and Ohio: The CLTV cap depends on the credit profile.

Who Should Skip It

Skip the line if the first rental has thin equity, if the property sits in an LLC, if you need more than $500,000, or if the next deal pencils only at today’s payment. Also skip it if you plan to sell the first rental soon: the CFPB’s HELOC materials note that selling generally means paying the line off.

The line fits best when equity is deep, personal income is steady, and the target property clears coverage well above 1.00. In that case the line works as a bridge, and a later DSCR cash-out refinance can take its place. For loan mechanics on the purchase side, the complete DSCR loans guide explains how rent coverage, leverage, and reserves interact.

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. CFPB – What You Should Know About HELOCs (booklet)

2. NerdWallet – Can You Get a HELOC on an Investment Property

3. FTC – Home Equity Loans and Home Equity Lines of Credit