The Quick Read: Usually nothing, because a DSCR HELOC is secured by the whole rental. That takes a lien signature from every titled owner, even though the co-owner does not have to borrow. The line is then sized on the full property’s equity, credit and rent coverage rather than on your share alone. The co-owner signs the lien but stays off the note. If they refuse to sign, a whole-property line generally cannot close, and the sizing question never comes up.
- A second lien reaches up to 70% combined loan-to-value at a 720 score or better, subject to underwriting.
- Rent qualifies the line, so neither owner’s personal income is calculated.
- If the co-owner will not sign, the realistic paths are a buyout, a retitle, a line on a rental you own alone, or a different product.
Why the Dollar Answer Is Usually Zero
The better first question is “who has to sign,” because title decides whether a line exists at all.
A DSCR HELOC is a home equity line of credit on a non-owner-occupied rental of one to four units. It qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. The lender takes a lien on the rental as collateral. That lien is only as good as the title behind it, so the lender wants every owner of record to sign.
Think of two siblings who each own half of a duplex. One sibling wants a line and the other wants nothing to do with it. The borrowing sibling cannot get a smaller line by pledging only half. Across the wholesale network Lendmire places files with, programs of this type ask for a lien on the entire property. A lien on a fractional share is weak collateral, because a lender cannot easily foreclose on a slice of a building.
So no dollar figure exists for borrowing without the other owner. The structure is not offered in this lane. What you can do is borrow without the other owner being a borrower, and that distinction is where the real options sit.
Signing the Lien Is Not Borrowing
Two documents matter here. The note is the promise to repay. The security instrument is the lien that pledges the property.
Only borrowers sign the note. A titled owner who is not a borrower signs the security instrument and, where the program requires it, a non-borrowing owner acknowledgment. Their credit and income are generally not part of the file. They carry no repayment duty on the line. Their share of the property is still pledged.
| Title situation | Signs the note | Signs the lien |
|---|---|---|
| Co-owners, one borrows | The borrower only | Every titled owner |
| All owners borrow | All owners | All owners |
| Property held in an LLC | LLC; members as guarantors | The LLC as title holder |
| Spouse not on title | Not required | State law decides |
On LLC title, vesting in your own LLC is allowed on this program for investment property, subject to lender program eligibility. The borrowers on the line also need not be the borrowers on your first mortgage.
How the Line Is Sized When Everyone Signs
Once the title gate opens, five things set the line: the property’s value, the first mortgage you keep, your credit tier, the rent coverage and the program’s line limits. Your ownership percentage is not on that list. The leverage ceiling applies to the whole property’s value.
Here are the typical ceilings through select programs, subject to underwriting:
- Second lien on a rental with a first mortgage: up to 70% combined loan-to-value (CLTV) at a 720 score or better, on lines from $50,000 to $500,000. CLTV means the first mortgage balance plus the new line, divided by value.
- First lien on a rental with no mortgage: up to 75% loan-to-value (LTV) at 740 or better, and 70% LTV from 700 to 739, on lines up to $500,000.
- Larger first-lien lines: lines above $500,000, up to $1,000,000, carry a 65% LTV ceiling at 720 or better. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
A first-lien line exists only on a rental with no mortgage. If you keep a first mortgage, the line is a second lien.
Run the sizing this way, using modeled percentages. Say the rental is worth 100 points of value and your first mortgage sits at 50 points. A second lien at the 70% CLTV ceiling leaves up to 20 points of value for the line. A first mortgage near 65 points leaves only about 5 points, and the line may fall below the $50,000 minimum. Existing debt sets the room, not the number of owners.
Then the rent has to cover the line. Minimum coverage is 1.10x, which is gross monthly rent divided by a qualifying payment. That payment is a fully amortizing principal-and-interest payment on the entire credit limit, run at a stress level. Taxes and insurance are not part of it.
Rent is the lesser of the appraisal’s market rent and the lease, unless three months of receipts support a lease above market. A lease in place is required. A two-to-four-unit property may have at most one vacant unit. Confirm on the file how the lender treats the first-mortgage payment on a second lien, since the lender’s own coverage calculation governs.
The draw rules are fixed. At least 80% of the line is drawn at closing, and the closing draw is never less than $50,000. Later draws are at least $5,000 each. The draw period runs 5 years interest-only on the drawn balance. A 25-year fully amortizing repayment period follows, for a 30-year maturity. The rate is variable.
A rental bought or refinanced inside the last 6 months is not eligible (that clock runs from the last note date to the new note date), and the owner must have held title for 6 months (settlement date to note date). Lines up to $400,000 use an automated valuation with a property inspection report, or a full interior appraisal. Larger lines take the full interior appraisal. No reserves are required. Exposure per borrower tops out at 5 loans or $2,500,000 with the program.
Rural-designated property, row homes, condotels and leaseholds fall outside the program. For the full picture of how these loans fit together, see the complete DSCR loans guide.
Can You Pledge Just Your Share?
Legally, sometimes. Practically, not on this product.
Nolo explains that tenants in common can hold unequal shares, such as 80/20, while joint tenants must hold equal shares. A mortgage on one share reaches only that share. A lender that wants a clean path to collect on a default asks for the whole building instead.
You may wonder whether federal rules let you keep the co-owner out entirely. They do not. The Equal Credit Opportunity rule in CFPB Regulation B generally bars a creditor from requiring a non-applicant’s signature on the credit instrument when you qualify on your own. The same section carves out secured credit. A lender may require signatures on whatever instrument state law says is needed to create a valid lien on the collateral.
The practical result matches what happens at the closing table. A lender also may not routinely require a joint owner to sign an instrument that gives up their interest, such as a quitclaim deed. Signing a lien does not transfer ownership.
Where the Usual Rule Bends
| Situation | What changes |
|---|---|
| Tenancy by the entirety | Married co-owners in some states; both must sign |
| Joint tenancy | A lien can sever the joint tenancy; get attorney review |
| Spouse off title | State and community-property law decide who signs |
| Heirs, estate open | No line while the estate holds title |
| Heirs, deed recorded | Possible with all owners signing |
| Buyout to sole title | Restores a normal single-owner file |
| Non-owner helper | Cannot sign the lien |
Heirs deserve a closer look. If probate is open and the estate holds title, a line usually cannot be placed. Once the deed is recorded to the siblings, a line becomes possible with all of them signing. A buyout that leaves one person with sole title makes it a standard single-owner file.
State rules on entireties tenancy and spousal interests vary, and this article cannot settle them for your state. A title company or real estate attorney can tell you which setup you actually hold.
What If the Co-Owner Won’t Sign?
| Option | What it takes | Best fit |
|---|---|---|
| Buy out the co-owner | Cash or a refinance | You want sole control |
| Retitle the property | Check the existing mortgage first | Ownership should match who will sign |
| Borrow on another rental | A property you own alone, six months on title | You have equity elsewhere |
| Rent-qualified cash-out refinance | Every titled owner still signs | The partner agrees but wants a different structure |
The third path is often the cleanest. Equity does not pool across rentals, because each line attaches to one property. A solely owned rental can carry its own line while the co-owned one sits untouched.
An investor who wanted to protect a co-owner described the same wall in a BiggerPockets discussion of borrowing against a co-owned property. The co-owner had to sign the lien, and only one line fit on the house. The best reply there suggested a buyout paired with a junior lien. The thread is old, so treat it as an example of the problem, not current lender guidance.
If you would rather qualify on personal income instead of rent, that is a different program with its own rules. Lendmire’s piece How to Qualify for an Investment Property HELOC Without the Other Owner covers that route.
The Risk the Other Owner Takes
Your co-owner is not liable on the note. Their credit is not pulled. Their equity is still pledged.
If the borrower defaults, the lender can look to the property, and that includes the co-owner’s share. Draws also happen later without the co-owner’s involvement. After the closing draw, you can take later draws of $5,000 or more without asking anyone.
That is the real conversation to have before you apply. A co-owner who understands the pledge, and who agrees in writing how draws and repayments will be handled, is a co-owner who signs. Put the plan in a co-ownership agreement, and have an attorney review it first.
A short list of what that agreement should cover:
- Who may borrow and who may draw.
- How draws are repaid and who owns the repayment duty.
- What happens if the borrower stops paying.
- How either owner can exit or sell.
Key Terms Defined
Titled owner: anyone whose name is on the deed, whether or not they borrow.
Note: the signed promise to repay the line, which only borrowers sign.
Lien: the claim on the property that secures the line, which every titled owner signs.
Non-borrowing owner: a titled owner who signs the lien but not the note.
CLTV: combined loan-to-value, meaning the first mortgage plus the new line divided by the property’s value.
DSCR: debt service coverage ratio, meaning the rental’s gross monthly rent divided by the qualifying payment.
Frequently Asked Questions
Can I get a DSCR HELOC on a rental I co-own without my partner knowing?
No. Title is reviewed on every file, and every titled owner signs the lien. A line placed without the co-owner’s signature would not give the lender a valid lien on the whole property. Plan the conversation with your co-owner first.
Will my co-owner’s credit be checked if they only sign the lien?
Generally no. Only borrowers go through the credit and income review. A lien-only signer is not on the note and has no repayment duty, though their share of the property is pledged.
Does owning only 50% of the rental shrink the line?
No. The line is sized on the whole property’s value, your credit tier, the first mortgage you keep and the rent coverage. The co-owner’s share is part of the collateral.
Can I put the co-owned rental in my LLC for the line?
Possibly. Vesting in your LLC is allowed on this program for investment property, with the members signing as guarantors. Existing title and any current mortgage still matter, so check them before you retitle anything.
Can a power of attorney replace the co-owner’s signature?
That depends on the lender’s guidelines and state law. A power of attorney must be properly drafted, and lenders review it closely. Do not count on it as a substitute until the lender confirms it in writing.
Next Steps
If you are considering a home equity line on a rental property and want to see how the numbers work, Lendmire can help you compare DSCR HELOC options based on the property, the rent, the equity available, credit profile, combined leverage, and your goals. The program is offered in 15 of Lendmire’s 16 licensed states, every licensed state except Tennessee. All terms are subject to underwriting, and Lendmire is a broker, not a lender. You can reach the team at 828-256-2183.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage serving landlords and real estate investors in 16 licensed states. DSCR home equity lines of credit on non-owner-occupied one-to-four-unit rentals are arranged through wholesale lending channels; Lendmire brokers the line and the lender underwrites each application on the property’s rent, credit and leverage. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
1. Nolo, Co-Ownership for Unmarried Couples
2. CFPB, Regulation B § 1002.7
3. BiggerPockets, Equity from a Co-Owned Property
This article is part of Lendmire’s DSCR HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How Much Can You Borrow on a DSCR HELOC Without Changing the Deed? · How Much Can You Borrow on a DSCR HELOC for Landlords Choosing a Lender? · How Much Can You Borrow on a DSCR HELOC With an Appraisal Below the Purchase Price?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosure information. Lendmire is a state-licensed mortgage brokerage under NMLS# 2371349. Lendmire is not a depository institution, direct lender, or financial advisor — all loans referenced are placed through wholesale lender partners and are subject to each lender's underwriting standards. This article is provided for general informational purposes and is not a commitment to lend, nor does it constitute financial, legal, or tax advice. Loan programs, terms, rates, and qualification standards change without notice and depend on borrower profile, property type, and the state in which the subject property is located. Equal Housing Opportunity provider. NMLS Consumer Access: nmlsconsumeraccess.org.