The Quick Read: A DSCR HELOC suits a two-to-four-unit rental where every unit but at most one carries a lease, because signed leases supply most of the rent evidence. The line qualifies primarily on property-level rental income covering the qualifying payment, subject to lender guidelines. Your personal income is never calculated.
- The lender counts rent unit by unit, using the lesser of the lease or the appraiser’s market rent.
- A two-to-four-unit property may have at most one vacant unit, subject to underwriting.
- The coverage test runs against the entire credit limit, not just the amount you draw.
- A live-in owner unit is a different product and is outside this program.
- Combined leverage and credit score decide how much line the rent can support.
This article reads “all other units leased” the way most investors mean it: a duplex, triplex or fourplex where one unit is empty or in transition and every other unit has a tenant on a lease. Below, you will see how underwriting treats that building, where the rule bends, and what the decision looks like in practice.
What a DSCR HELOC Actually Is
A DSCR HELOC is a revolving line of credit secured by a non-owner-occupied rental. DSCR stands for debt service coverage ratio, which compares the property’s monthly rent to the monthly payment the lender tests. HELOC means home equity line of credit.
The line is written as a standalone second lien behind a first mortgage you keep. It can also be a standalone first lien on a rental with no mortgage. It is never closed together with a purchase, and it is never a third lien.
Because the rent qualifies the line, the file does not require traditional personal-income documentation such as W-2s or pay stubs, and it does not use a debt-to-income ratio. That is not the same as skipping verification. The lease, the credit report and the property valuation are all documented.
The owner can hold title in an LLC, subject to program eligibility. The members sign as guarantors. If a title holder is not a borrower, that person signs a non-borrowing owner acknowledgment and the security instrument.
Lendmire is a broker. It places this line through a wholesale lender in its network, and the program is offered in 15 of Lendmire’s 16 licensed states, every licensed state except Tennessee. For the broader picture of how rent-qualified lending works, see the complete DSCR loans guide.
How Underwriting Treats a Building With All Other Units Leased
The lender works through the file in a set order. Here is how that order plays out when one unit is empty.
Step 1: Eligibility screen. The property must be a rental you do not live in. It must be a single-family home, PUD, townhome, condominium or a two-to-four-unit building, among other eligible types. The program carries property exclusions, covered below.
Step 2: Valuation. On lines up to $400,000, the lender uses either an automated valuation (confidence score of 85 or better) with a property inspection report, or a full interior appraisal. Larger lines take a full interior appraisal. Appraisal waivers are not accepted. The appraiser’s rent schedule (Form 1007) supplies the market rent for each unit.
Step 3: Rent, unit by unit. Each unit stands on its own. For a leased unit, the counted rent is the lesser of the lease or the appraiser’s market rent. A lease below market pulls the number down. A lease above market can count when three months of rent receipts back it up, subject to underwriting.
Here is why “all other units leased” matters. Most of the rent in the file rests on signed leases. Only the empty unit depends on an appraiser’s opinion. How that unit counts is governed by the lender’s own coverage calculation. This program requires a lease in place and allows at most one vacant unit in a two-to-four-unit building.
Step 4: The qualifying payment. The lender does not test the payment on what you drew. It tests a fully amortizing payment on the entire credit limit at the start rate plus 2 percentage points. That is a stress payment, built to be higher than what you will actually pay during the interest-only years. On a second lien, the lender’s coverage calculation governs whether the first-mortgage payment joins that test.
Step 5: The ratio. Gross monthly rent divided by the qualifying payment must reach at least 1.10x. Any arithmetic you run yourself is illustrative until the lender runs its own numbers.
Step 6: Leverage and credit. The rent can pass while combined leverage or credit fails the file. More on that below.
A Worked Example: Fourplex With One Empty Unit
Run the numbers on a fourplex with four equal units. These are modeled assumptions, not market data. Say the building’s full rent covers the stress payment on a given line at 1.40x.
| Scenario | Share of full rent counted | Illustrative coverage |
|---|---|---|
| All four units leased at market | 100% | about 1.40x |
| Three leased, fourth empty and not counted | 75% | about 1.05x |
| Three leased, one lease 10% under market | 72.5% | about 1.02x |
| Empty unit leased at market before valuation | 100% | about 1.40x |
At 1.05x, this file falls under the 1.10x minimum. The honest read is that one empty unit in a fourplex can cost more than a quarter of the cushion.
You have three practical moves. First, lease the fourth unit at market before the valuation. Second, ask for a smaller line, which lowers the qualifying payment. Third, wait until the building is stabilized. Whether any structure works still depends on lender guidelines, credit approval and property review.
Shrinking the line is a powerful lever because the test is proportional to the limit. Cut the line roughly in half, and the stress payment drops roughly in half. In the model above, the three-leased case moves from about 1.05x to about 2.10x. The tradeoff is less available equity.
How Much Does One Empty Unit Cost?
The smaller the building, the more one empty unit hurts. Assume equal units and the same 1.40x coverage when full.
| Building | Rent lost with one unit empty | Illustrative coverage |
|---|---|---|
| Duplex | 50% | about 0.70x |
| Triplex | about 33% | about 0.93x |
| Fourplex | 25% | about 1.05x |
A duplex with one empty unit has no cushion at all. A triplex is close to the line. Only the fourplex lands near the 1.10x minimum, and even there it needs room to spare. If your building is small, filling the last unit before you apply usually matters more than any other step.
What If the “Other” Unit Isn’t Simply Vacant?
“All other units leased” sounds clean. Real buildings are messier, and these cases come up often.
- Two or more vacant units. A two-to-four-unit property may have at most one vacant unit under this program. A second empty unit is an eligibility problem, not a ratio problem.
- Month-to-month or expired leases. A lease in place is required. Whether a rolling tenancy counts as a lease varies by lender, so treat it as a question to settle before you apply. Renewing the lease first is often the cleaner path.
- Tenants who are relatives. Many lenders look harder at related-party leases. Expect a request for evidence that the rent is paid and sits at market.
- A unit under renovation. If the unit is not lease-ready, it is generally a different problem from a vacant, rent-ready unit. Finish the work and lease it first.
- A non-paying tenant. A lease on paper does not mean rent is arriving. Programs differ on how they count it, and recent rent receipts matter.
- A short-term rental unit. Nightly bookings are not a lease in the ordinary sense, and the program requires a lease in place. Treat a unit run as a short-term rental as a question to settle with the lender before you apply, and put a standard lease on it first if you want it counted.
The owner-occupied unit. If you live in one unit, this is the wrong product. The line is never offered on an owner-occupied home or a second home. DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage. The CFPB’s Regulation Z commentary treats credit to acquire, improve or maintain a rental that is not owner-occupied as business purpose, regardless of unit count.
The reverse matters for how you use the money. Draws spent on the property fit the investor frame, while personal spending can muddy it. 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.
Why the Whole Line Is Tested, Not the Drawn Balance
Many investors expect the lender to test only what they borrow. This program does not.
At least 80% of the line, and never less than $50,000, is drawn at closing. Later draws are at least $5,000 each. Yet the qualifying payment is computed on the full limit, because the whole line is available to you.
Say you open a line and draw only the required portion. The test still assumes you could use all of it, amortized, at a stressed rate. So a bigger line demands more rent, and a smaller line demands less.
This is why sizing the line to the building’s rent often beats asking for the maximum. It also protects you later. A line you can cover at the stress payment is far less likely to strain the property when the repayment period begins.
Leverage, Credit and File Rules
The rent only gets you in the door. Leverage and credit decide how large the line can be. These figures are ceilings and floors available through select programs, subject to underwriting.
| Factor | Second lien (behind your first mortgage) | First lien (no mortgage) |
|---|---|---|
| Maximum leverage | 70% CLTV at 720 or better | 75% LTV at 740 or better |
| Mid tiers | 720 to 739: 70% CLTV | 700 to 739: 70% LTV |
| Line size | $50,000 to $500,000 | To $500,000, then to $1,000,000 |
| Larger lines | Not offered above $500,000 | 65% LTV at 720 or better |
| Minimum credit score | 720 | 700 |
CLTV means combined loan-to-value: your first mortgage balance plus the new line, divided by the property’s value. LTV is the same idea with a single loan. A flag for a declining market lowers the ceiling by 5 points.
Credit rules are simple. You need no 30-day mortgage late in the last 12 months. You also need 48 months since any bankruptcy, foreclosure, short sale or deed-in-lieu. Reserves and cash to close are not required. A borrower can have at most 5 loans or $2,500,000 with the program.
Seasoning is the waiting period between events. 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).
Terms are the same for every line. You get a 5-year interest-only draw period on the drawn balance, then a 25-year fully amortizing repayment period, with a 30-year maturity. The rate is variable.
Several properties are outside this lane, as listed below:
- rural-designated property, row homes and condotels
- commercial, agricultural and mixed-use property
- leaseholds, land trusts and age-restricted communities
- modular and log homes, hobby farms and land contracts
- a property listed for sale in the prior 2 months, or one with a solar lien
Borrowers must be US citizens, permanent residents or non-permanent residents with a Social Security number. Foreign nationals and ITIN borrowers are not eligible.
Moving Out of a Unit? Get the Order Right
Many house-hackers ask this. You bought a small building, lived in one unit, and now want to move and tap the equity.
The sequence matters. Move out, lease your old unit at market, then let the seasoning clocks run before you apply. Only then does the building look like what this program covers: a rental with leases in every unit. Applying while you still live there points you toward a different, owner-occupied product.
A related Lendmire piece covers how to qualify for a DSCR HELOC when all other units are leased. It goes deeper on the qualification steps.
The Documents to Pull Together
Gather these before you talk to a broker:
- signed leases for every leased unit
- a rent roll, which lists each unit’s tenant, rent and lease dates
- three months of rent receipts for any lease above market
- the current mortgage statement, if you keep a first mortgage
- hazard insurance, plus flood coverage where required
- entity documents, if the property sits in an LLC
A clean rent roll does a lot of work. When leases, receipts and the rent schedule line up, the file reads simply.
Is a DSCR HELOC the Right Tool?
It depends on what you want from the equity. Here is a plain comparison.
| Option | Pick this if | Watch for |
|---|---|---|
| DSCR HELOC | You want to keep your first mortgage and borrow as needed | Variable rate, stress test on the full line |
| DSCR cash-out refinance | You want a new first loan and a lump sum | Replaces your existing mortgage |
| Investment HELOC qualified on personal income | Your income documents are strong | That program’s income rules apply |
| Bank statement HELOC | You are self-employed with strong deposits | That program’s own documentation rules |
The first row keeps your existing first mortgage intact. If your first mortgage is one you would not want to replace, a standalone second lien is the main reason to choose this line. If you want to restructure the whole debt, a cash-out refinance fits better.
Risks and When to Skip It
The line is flexible, but it is not a cheap mortgage. Three risks stand out.
The payment can jump. The rate is variable, so payments can move. Once the 5-year interest-only period ends, you begin repaying principal over 25 years. Consumer-credit explainers, such as Experian’s overview of the draw period on a HELOC, note that payments rise when a line shifts from interest-only to principal-and-interest repayment. On a rental, interest-only years can make cash flow look better than it will later.
Coverage today is not coverage later. The test happens at application. If a tenant leaves after closing, the property carries the line anyway. Keep a cushion above the minimum.
The loan is personal. Members of an LLC sign as guarantors, so a title in an LLC does not remove your personal exposure.
Skip the line if the building has more than one empty unit, if you plan to live in it, or if the ratio only barely clears. In those cases, fill the building first.
Key Terms Defined
Rent roll: a unit-by-unit list of tenants, rents and lease dates.
Stress payment: the fully amortizing payment on the entire credit limit at the start rate plus 2 percentage points, used only to test coverage.
CLTV: combined loan-to-value, meaning your first mortgage balance plus the new line, divided by the property’s value.
Lien position: whether the lender is first in line (first lien) or second behind your existing mortgage (second lien).
Draw period: the 5 years in this program when you pay interest only on the drawn balance.
Seasoning: the waiting period a lender requires between a purchase or refinance and the new loan.
Frequently Asked Questions
Does one vacant unit disqualify me?
Not by itself. A two-to-four-unit property may have at most one vacant unit under this program, subject to underwriting. The bigger issue is the ratio, because the empty unit removes rent from the test. On a duplex or triplex, that loss can be large.
Is the coverage test run on the drawn amount or the full line?
The full line. The qualifying payment is a fully amortizing payment on the entire credit limit at the start rate plus 2 percentage points. A smaller line lowers that payment and raises your ratio. The lender’s own calculation governs.
Can I live in one of the units?
No. This line is never offered on an owner-occupied home. If you live in one unit, you would be looking at a different, owner-occupied product. After you move out and lease the unit, the building can be reviewed as a rental.
Do leases with relatives count?
It depends on the lender, and many look harder at related-party leases. Expect a request for proof that rent is actually paid and sits at market. The rule that each unit counts at the lesser of lease or market rent still applies.
Does the program ask for my tax returns?
No. The line is reviewed on the rental’s income: no traditional personal-income documentation, W-2s or personal income calculation, subject to lender guidelines. The lease, rent receipts where needed, credit report and valuation are still documented.
Next Step
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. This is not a commitment to lend. Each file is underwritten individually, and programs can change.
A small building with one empty unit rewards patience: the same property that misses the test today can clear it comfortably once the last lease is signed.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage serving homeowners and real estate investors in its 16 full-service states. Home equity lines of credit are arranged through wholesale lending channels; Lendmire brokers the line and the lender underwrites each application under its occupancy-based guidelines. 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. CFPB — Regulation Z §1026.3 Exempt transactions
2. Experian — What Is a Draw Period on a HELOC
This article is part of Lendmire’s DSCR HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How a DSCR HELOC Works in a Declining Market · How a DSCR HELOC Works for Storm Repairs · How a DSCR HELOC Works Qualified on Assets
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Legal disclosures. Lendmire (NMLS# 2371349) is a state-licensed mortgage brokerage that arranges financing through wholesale lender relationships. Lendmire is not a direct lender, depository institution, or registered financial advisor. The discussion above is general informational content about real estate financing — it is not financial, legal, or tax advice, and readers should consult licensed professionals for guidance on their individual circumstances. Loan inquiries are subject to lender underwriting; this article does not represent a commitment to lend. Loan terms, rates, and qualification standards vary by borrower, property, and state, and are subject to change at any time. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.