How Much Can You Borrow on an Investment Property HELOC on a Jointly Owned Home?

The Quick Read: Usually up to 70% combined loan-to-value on an investment property, measured on the whole home’s value, minus every lien already recorded, with the line itself capped at $500,000 no matter how small your ownership share, and every titled owner generally signing the lien.

On an investment property, the network ceiling is 70% combined loan-to-value, reached at a 700 or 720 credit profile. The maximum investment line is $500,000, and the minimum is $25,000. A co-owner can sign only the lien and stay off the note, but then their income and credit do not count. These lines are available in 16 full-service states, which is narrower than the 41-market DSCR footprint. Everything is subject to lender guidelines and full file review.

How Is the Limit Calculated When the Home Has Two Owners?

The formula is the same as for a single owner. Take the whole property’s value, apply the combined loan-to-value cap, then subtract every lien already recorded. What remains is the most the line can be.

A lender values the entire property because it takes a lien on the entire property. A 50% co-owner and a 100% owner are measured against the same collateral.

Here is a modeled example. Call the home’s value 100%. On an investment property, the cap is 70% combined loan-to-value. Say the first mortgage is 45% of value. That leaves room for a line worth 25% of value. If the first mortgage were 60% of value, the room would shrink to 10% of value.

Then two more limits apply. The line cannot exceed $500,000 on an investment property, and it cannot fall below $25,000. If 25% of value happens to be more than $500,000, the dollar cap wins.

Think of it as two tests. The equity test sets the ceiling, and the borrower test can lower it.

Why Is the Investment Cap Lower Than a Primary Home Cap?

Lenders treat a rental as higher risk. NerdWallet says a line on an investment property is harder to get than one on a primary home, and that not all lenders offer it.

The network’s ceilings depend on occupancy. Primary residences and second homes can reach 90% combined loan-to-value, and only at a 720 or better credit profile. An investment property tops out at 70%. Nothing above 70% exists on an investment line.

The investment table has only two tiers. A 720 score and a 700 score both reach 70% combined loan-to-value, so credit above 700 buys eligibility rather than more leverage. A 700 score is a hard floor, with no tier below it.

What Else Can Shrink the Line?

The borrower tests can cut the line below the equity ceiling. These lines are qualified on the borrower and the collateral, not on rent coverage the way a DSCR loan is.

• Credit. A 700 score is the investment floor. The score model uses a single bureau and keys to the primary wage earner. The report can be no more than 90 days old at closing.
• Debt-to-income. The maximum is 50%. The payment used is the interest-only payment calculated on the maximum draw, so a large line weighs on the ratio even if you plan to draw little.
• Derogatory history. A bankruptcy needs 4 years of seasoning from discharge or dismissal. On investment files, a foreclosure needs 7 years, and a deed-in-lieu, pre-foreclosure, or short sale needs 4.
• Exposure. A borrower is limited to three lines. A borrower with more than 15 financed properties is not eligible.
• Valuation. Because investment lines cap at $500,000, they typically run on automated valuation with no traditional appraisal. A borrower can still request a full appraisal. A higher combined loan-to-value may call for a secondary valuation.

Lines above $500,000 are available only on primary residences. They require a full appraisal and a 700 or better credit profile (720 on the longer-runway structure), and they cap at 75% combined loan-to-value. None of that applies to a rental.

Do All Owners Have to Sign?

Almost always, yes. The lender wants a lien on the whole property, and a lien on the whole property needs every titled owner’s signature. FedLaws explains that when only one co-owner signs, the mortgage generally attaches only to that person’s interest, which makes the loan much riskier for the lender. A line sized on the full value does not work with a lien on a fraction.

Signing the lien is not the same as borrowing. The note is the promise to repay. The lien is the pledge of the property. A co-owner who signs only the lien pledges the home but is not personally liable on the line.

Federal law also limits what a lender can demand. Under 12 CFR 1002.7, a creditor generally cannot require a person who is not an applicant to sign credit instruments if the applicant qualifies alone. For secured credit, the creditor may require signatures on instruments needed under state law to make the property available to satisfy the debt on default. That is the lien, not the note.

If both owners’ income is needed to qualify, both go on the note, and each is liable for the full line. That is the point many co-owners miss. The line is not split in half between them.

Whose Income and Credit Count?

Only the borrowers’. A co-owner who signs just the lien contributes nothing to income, credit, or debt-to-income. Their score will not lift the file, and their debts will not weigh on it.

One more detail matters here. The network’s score model keys to the primary wage earner. If the stronger credit profile belongs to the owner who is not borrowing, that profile does not help the file.

How Does the Form of Title Change the Picture?

It changes who can pledge what. The rules differ by state, so treat this section as orientation rather than legal advice.

Nolo explains that a tenant in common can generally mortgage only their own share. A joint tenant who mortgages their interest may sever the joint tenancy. In tenancy by the entirety, which is available to married couples only, one spouse cannot encumber the property alone. Community-property states add their own rules on spousal consent.

For a lender sizing a line on the whole property, none of this lowers the requirement. Every titled owner is expected to sign, whatever the form of title. The form of title determines how hard it is to pledge the property without everyone.

Title vesting also matters on its own. The network requires the property to be held by an individual borrower or a revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title on these lines. A property already deeded to an LLC needs a vesting change first, or a different product altogether. This is the sharpest structural difference from a DSCR loan, which can close in an LLC subject to lender program eligibility.

Inherited homes with several heirs raise the same signature issues.

How Does the Line Work After Closing?

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. It is the only structure offered on investment properties.

At least 75% of the line is drawn at closing. Pricing floats during both the draw and the repayment period and does not convert to a fixed payment. A borrower should size the line knowing most of it is outstanding from the start.

The CFPB describes the general structure the same way: an open-end line you can draw on repeatedly, with a draw period followed by a repayment period.

For co-owners, there are two practical points. The draw typically cannot be split into separate private balances, since the line is one account secured by one lien. And a line on a jointly held rental affects any exit the owners plan together, because the balance has to be paid when the property is sold.

Key Terms Defined

• Combined loan-to-value (CLTV): The first mortgage plus the full limit of the new line, divided by the property’s value.
• Lien: The legal claim on the property that lets the lender foreclose if the debt is not paid.
• Note: The signed promise to repay, which makes the signer personally liable.
• Tenancy in common: Shared ownership in which each owner holds a share that can be mortgaged on its own.
• Joint tenancy: Shared ownership with equal shares, which can be severed if one owner mortgages or transfers their interest.
• Tenancy by the entirety: Joint ownership by spouses only, in which neither can commit an interest without the other.

What If a Co-Owner Will Not Sign?

You have four realistic paths.

1. Buy out the co-owner. Once you are the only titled owner, you can apply alone, and the equity test runs on your title.

2. Retitle. Where both owners agree, moving title to the borrower or a revocable living trust can simplify the file.

3. Use a different property. A line on a property you own alone avoids the signature issue entirely.

4. Move to a DSCR cash-out refinance. This is a different mortgage product, so every titled owner still has to be part of the new loan. But the file does not depend on a personal debt-to-income ratio.

The comparison below sets the two products side by side.

Across the network, a DSCR cash-out refinance tops out around 75% LTV on a standard rental, and about 6 months of seasoning is the common expectation. Coverage of 1.00 is where many select programs start, while a separate select-lender path takes coverage below 1.00 with leverage and terms adjusted. Clearing 1.00 does not mean the property produces positive cash flow, since repairs, vacancy, management, and capex sit outside the calculation. The complete DSCR loans guide covers the full program range. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.

Which Properties Are Not Eligible?

Single-family homes, 2-4 unit properties, PUDs, townhomes, and condominiums are eligible, including non-warrantable condos. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned properties are not eligible. A property listed for sale is ineligible in some states, so confirm that before you apply.

A Pre-Application Checklist for Co-Owners

• Confirm exactly how title is held and who is named on the deed.
• Confirm that title is held by an individual or a revocable living trust, not an entity.
• Pull the current first-mortgage balance and any other liens.
• Decide which owner is the borrower and whether one income can qualify alone.
• Check that the borrower’s credit profile is 700 or better.
• Ask every titled owner whether they will sign the lien.
• Count your financed properties and existing lines against the exposure limits.

Next Step: Check Your Numbers

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. Lendmire is a mortgage broker that places these files through select wholesale partners. It is never the lender, and every figure here is subject to lender guidelines and full file review. This is not a commitment to lend.

About Lendmire

Lendmire (NMLS# 2371349) is a DSCR-focused mortgage broker. Its investor loan programs span 40 states plus Washington, D.C., which makes 41 markets in total. Home equity lines are placed in a narrower set of states, and DSCR lender review runs primarily on the property’s rental income, subject to lender guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. NerdWallet – HELOC on investment property

2. FedLaws – Liens on jointly owned property

3. eCFR – 12 CFR 1002.7

4. Nolo – Joint property ownership

5. CFPB