How an Investment Property HELOC Works With All Other Units Leased

The Quick Read: A line of credit on a leased two- to four-unit rental is underwritten mainly on you, not on the rent roll: the lender checks credit, debt-to-income and combined leverage, and full occupancy supports the file without raising the leverage ceiling.

• On an investment property, the network ceiling is 70% combined loan-to-value (CLTV), and the line tops out at $500,000.
• A credit score of 700 is the floor, and 720 buys the same 70% as 700.
• Leases show your income is real, but they do not change the CLTV cap or fix a weak credit file.
• A property titled in an LLC cannot be used, because only the individual borrower or a revocable living trust can hold title. A DSCR cash-out refinance is an alternative worth considering, or the title can be changed.
• Availability runs through Lendmire’s 16 full-service states, which is narrower than its DSCR footprint. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.

What Is an Investment Property HELOC?

An investment property HELOC is a revolving credit line secured by a rental you own. You borrow against the equity, repay, and borrow again within a set window.

NerdWallet reports that these lines exist but come from a smaller pool of lenders. They carry stricter requirements than a line on your own home. Some lenders restrict them by location or by whether the property is rented all year.

Across the wholesale network Lendmire works with, the structure is a standalone line in first or second lien position. The investment version uses a 5-year interest-only draw period followed by a 25-year repayment period. At least 75% of the line is drawn at closing. On this program, pricing floats during both the draw and the repayment period and does not convert to fixed.

Lendmire is a broker. It arranges these lines through select wholesale lenders and does not lend itself. Every figure here is subject to lender guidelines and full file review.

Key Terms Defined

HELOC: A home equity line of credit, which lets you borrow repeatedly against equity up to a set limit.

CLTV (combined loan-to-value): All loans secured by the property, added together and divided by its value.

Lien position: Your place in line for repayment if the property is sold. A first lien is paid before a second lien.

DTI (debt-to-income): Your monthly debts divided by your monthly income, the main test on a personal-income line.

DSCR (debt service coverage ratio): Monthly rent divided by the monthly housing payment, which includes principal, interest, taxes, insurance and any HOA dues.

Draw period: The stretch when you can borrow from the line, followed by repayment.

How Does the Line Work, Step by Step?

The lender verifies the property is a leased investment rental, tests you on credit, DTI and CLTV, values the building, then opens a line you draw from and repay on a set schedule. Each step below has its own pass-or-fail point.

1. Eligibility screen. The building must be a non-owner-occupied single-family, 2-4 unit, townhome, PUD or condo property. Manufactured homes, co-ops, condotels, log homes, commercial and mixed-use properties are not eligible.

2. Credit check. An investment line starts at a 700 score. The score model keys off the primary wage earner, and the report can be no more than 90 days old at closing.

3. DTI test. The ceiling is 50%. The lender reviews your file on the interest-only payment calculated on the maximum draw, so an unused line still counts against you at full size.

4. CLTV test. Add your first mortgage balance to the new line and divide by value. The total must stay at or under 70% on an investment property.

5. Valuation. Lines at or below $500,000 ordinarily run an automated valuation with no traditional appraisal. A higher CLTV may trigger a secondary valuation, and you can request a full appraisal anyway.

6. Draw and repay. You borrow during the 5-year draw period, paying interest on what you use. Then the balance amortizes over 25 years. Lenders can freeze or reduce a line under the terms of the agreement, as the CFPB’s HELOC booklet explains.

The CFPB describes a HELOC as an open-end line you can use repeatedly. That revolving feature separates it from a cash-out refinance, which pays out once.

What Does “All Other Units Leased” Actually Prove?

Full occupancy proves the building produces real income. It does not raise your leverage cap, offset a thin credit file, or cure a title problem.

Think of it as supporting evidence. Signed leases back every dollar of rent a lender might consider. That reduces guesswork about whether the building is truly rented. On a personal-income line, rent may or may not be counted at all, and the treatment varies by lender.

The arithmetic of vacancy is simple. On a duplex, one empty unit removes about half the rent. On a fourplex, it removes about a quarter. A fully leased building keeps that risk off the table.

Still, the lender is underwriting you. Strong leases cannot lift you from the 70% CLTV ceiling, and a score under 700 does not become eligible because the rent roll is full.

When the Other Unit Isn’t Leased: Edge Cases

Most of the variation comes from the one unit that is not a standard lease. Details vary by lender.

The owner lives in one unit. The building then becomes a primary residence, and a primary-residence line follows a different CLTV table. Rent from the unit you occupy is not rental income. Only units rented to others add anything.

The title sits in an LLC. This is the sharpest structural difference from a DSCR loan. Title for these lines must be held by you as an individual or in an inter vivos revocable living trust. LLCs, corporations, partnerships and irrevocable, blind or land trusts cannot hold title. A building already deeded to an LLC needs a vesting change first, or a DSCR cash-out refinance instead, depending on lender program requirements.

The portfolio is large. A borrower is limited to three lines, with combined exposure capped at $2,000,000 on the higher-leverage program and $750,000 on the longer-runway program. An investor with more than 15 financed properties is not eligible.

Short-term rentals. Short-term rental rules can vary by city, county, HOA and property type, so investors should confirm local rules before relying on projected rental income.

A Worked Example With Percentages

Picture a leased fourplex and run the math in percentages rather than dollars. Assume the first mortgage balance sits at 50% of the building’s value.

The 70% CLTV cap leaves room for a line equal to 20% of value. If the building is worth less than the lender’s valuation expects, that room shrinks. If your balance is already near 65% of value, the available line is thin.

Now check DTI. The lender calculates the interest-only payment on the full line, not on what you have drawn so far. If that payment pushes your DTI past 50%, the line fails even when equity is ample. A fully leased building does not change this test.

Compare that to a market benchmark. On the network’s investment line, the ceiling is 70% CLTV and the draw period is 5 years.

When Is a DSCR Cash-Out the Better Fit?

When your personal income is the problem, not the building. A DTI-tested line can stumble on a strong rental if your taxable income looks thin after depreciation, or if you hold several financed properties.

Cash-out leverage tops out at 75% LTV on standard long-term rentals and 70% on short-term-rental collateral, and about 6 months of seasoning is the common expectation. For 2-4 unit buildings, lenders commonly use an appraisal with unit-level rent, a format that shows rent unit by unit. DSCR loans are not agency loans, but that format is still widely used for small multifamily collateral.

The tradeoff is structural. A cash-out refinance replaces your first mortgage. A line sits beside it. If your existing first mortgage is one you want to keep, the line may be the better route. Lendmire’s piece on HELOC versus cash-out refinance on a fully leased duplex walks through that comparison. The complete DSCR loans guide covers how coverage ratios and leverage fit together.

One caution applies either way. DSCR compares rent to the full housing payment only. Clearing the ratio is not the same as positive cash flow, because repairs, vacancy, management, utilities and capital costs sit outside the calculation.

Using the Proceeds Wisely

A line fits one-time costs that lift rent or value, such as renovating a leased building. It is a poor patch for a rental that does not cover itself.

Because pricing floats and lenders can freeze or reduce lines, your rent should cover the full payment with room to spare. An improvement may support a higher appraised value, depending on comps and underwriter review. It is never a guaranteed lift.

Tax treatment can depend on how the funds are used and how the property is held; borrowers should keep clear records and speak with a qualified tax professional before relying on any deduction.

Pre-Application Checklist

Gather these before you apply:

• Current leases for every rented unit, with recent rent receipts.
• Your first mortgage statement and an estimate of the building’s value.
• A current credit report review. The network needs 700 or better on an investment line.
• Title or vesting documents showing you or your revocable trust as owner.
• Insurance for the building.
• A DTI estimate using the interest-only payment on the full line you want.

If the first three items look solid and the fourth shows an LLC as owner, solve title before anything else.

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. For the DSCR route, the team arranges investor loans in 41 markets, including Washington, D.C., through select wholesale lenders. Reach Lendmire at 828-256-2183 or request a quote at the mortgage quote page.

A leased building can make the file cleaner, but the equity and the credit still decide how much the line can be.

About Lendmire

As a mortgage broker (NMLS# 2371349), Lendmire helps homeowners and real estate investors in its 16 full-service states open home equity lines of credit arranged through wholesale lenders. Lendmire is never the lender; line amounts, ceilings and terms are set by the lender under its guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. NerdWallet

2. CFPB – HELOC Booklet

3. CFPB