The Quick Read: You borrow against the equity in a duplex you live in, prove income with 12 to 24 months of bank deposits instead of tax returns, and the lender reviews the building as your primary residence while the rented unit supports the file without sizing the line. Occupancy decides the leverage ceiling. The deposits decide the income. The rent mostly plays a supporting role.
- Live in one unit and the duplex is reviewed as a primary residence, which opens the highest leverage tier on the network.
- Rent both units, or move out, and the file drops to the investment tier with lower leverage and a higher credit floor.
- Statements change only how income is proven. Credit, equity, debts, title, and valuation are still tested.
- Rent from the other unit does not raise the line on the programs Lendmire places files with.
- Lendmire is a mortgage broker, not a lender. Every figure below is subject to lender guidelines and full file review, and none of it is a commitment to lend.
Key Terms Defined
Bank statement HELOC: A revolving line of credit secured by your home, where the lender reads your income from account deposits rather than tax returns.
CLTV (combined loan-to-value): Your first mortgage plus the new line, divided by the property’s value.
Primary residence: A home you live in as your main address. A duplex counts when you occupy one of the two units.
Expense factor: A percentage the lender subtracts from business deposits to estimate what you actually keep.
Draw period: The early stretch when you can borrow from the line and pay interest only.
Repayment period: The later stretch when the balance amortizes and you can no longer draw.
DSCR (debt service coverage ratio): Monthly rent divided by the full monthly property payment. It is the test used on a separate product, the DSCR loan, which is built for non-owner-occupied rentals.
Lien position: Where a loan stands in line to be repaid. A line behind your first mortgage sits in second position.
How large a line the equity supports.
An equity line is sized by combined loan-to-value, occupancy, and credit — not by rental coverage. Switch the occupancy or the credit band and the ceiling moves with it.
Investment-property lines require a 700 minimum credit score; second-home lines start at a 640 minimum and primary-residence lines at 600, and the combined-LTV ceiling steps down as the credit band drops on primary-residence and second-home lines and holds on investment-property lines; the line cap steps down on primary-residence lines and holds at every tier on investment-property and second-home lines.
A debt-to-income ratio above 45% requires 680+ credit. Profiles under 640 are limited to single-family homes. At least 75% of the approved line is drawn at closing. Ceilings, floors, and caps update from Lendmire’s centralized guideline source.
Line estimate
Illustrative estimate only — not a quote, Loan Estimate, approval, or commitment to lend. The rate is an editable assumption; equity-line pricing is variable through both the draw and repayment periods and never converts to fixed. Occupancy and credit drive the ceiling together: an investment property tops out at 70% combined LTV (minimum credit 700, line cap $500,000); a second home tops out at 90% combined LTV (minimum credit 640, line cap $500,000), with the ceiling stepping down as the credit band drops (the cap holds at every tier); a primary residence tops out at 90% combined LTV (minimum credit 600), and its $750,000 maximum line is available only at 75% combined LTV or below with a 700-or-better credit profile (720 on the longer-runway program) and a full appraisal. Lines above $500,000 require a full appraisal. Credit, debt-to-income, property type, and full underwriting review all affect the final line.
How Does a Lender Classify a Duplex When You Live in One Unit?
If you live in one unit, the lender reviews the duplex as a primary residence, even though the other unit is rented. That classification is the single most valuable fact on the file. It unlocks leverage that an investment property cannot reach.
The two tiers look like this on the network Lendmire works with:
| Factor | You live in one unit | Both units rented |
|---|---|---|
| Review as | Primary residence | Investment property |
| Max CLTV | Up to 90% (720+ credit) | 70% |
| Credit floor | Lower tiers apply below 720 | 700 minimum |
| Max line | Up to $750,000 | Up to $500,000 |
The 90% figure exists only for borrowers at 720 or better. Below that, a lower leverage tier applies. On an investment line, 720 and 700 both reach the same 70% ceiling, so a higher score buys eligibility rather than extra leverage.
Occupancy is verified. Claiming you live in the building while every unit is leased is misrepresentation, and lenders check it. Duplexes also sit in a middle zone for many large retail lenders, and some depository institutions simply decline two- to four-unit buildings. A broker shopping several wholesale lenders can route around that.
How the Lender Turns Your Deposits Into Income
The underwriter averages 12 or 24 months of deposits into one monthly income figure. Self-employed owners and landlords use this path because tax returns often understate real cash flow. Depreciation and write-offs shrink reported income, even when money moves through the account every month.
The process runs in four steps:
1. The lender pulls personal or business statements for the chosen period.
2. Non-income deposits come out, including transfers between your own accounts, loan proceeds, and one-time windfalls.
3. An expense factor is applied to business accounts. Personal-account deposits are often counted closer to full value.
4. The cleaned total is divided by 12 or 24 to produce monthly qualifying income.
Business accounts need a 680 minimum score for this deposit analysis. That is rarely the binding constraint, since an investment line already floors at 700.
This is full documentation with a different income method. Credit, equity, existing debts, and title are all still reviewed.
Does the Rent From the Other Unit Count?
On the programs Lendmire places files with, the line is sized from your personal file and your equity. A tenant’s rent does not raise it. Some lenders in the wider market count a share of rent as income on owner-occupied multifamily, but that is program-specific, so ask before assuming it.
Rent still matters in three ways:
| Mechanism | What it measures | Used here? |
|---|---|---|
| Averaged deposits | Your cash flow, rent included | Yes, as part of income |
| Lease or rent roll | Proof the unit is rented | Yes, as support |
| DSCR coverage | Rent versus the property payment | No, different product |
The risk to watch is double counting. If your tenant pays into the same account you use for the deposit analysis, that rent appears in your deposits. The lender may also see it on the lease. A careful underwriter screens it so it counts once. You can help by keeping rent deposits easy to identify, ideally in one account, and by handing over a clean lease so nobody has to guess.
Tenants who pay by app or in cash create a separate problem. Deposits that cannot be traced to a lease or a statement line are the first thing an underwriter strips out.
Walking Through One Hypothetical Owner
Picture a self-employed owner who lives in one half of a duplex and rents the other. Every number below is a modeled percentage, not a market statistic.
- Property: Value is set by the lender’s valuation.
- First mortgage: Balance equals 50% of that value.
- Credit: The owner holds a 720 or better profile.
- Income: Twelve months of cleaned deposits support the file.
Because the owner lives in the building, the primary-residence ceiling of 90% CLTV applies. That leaves room for a line equal to about 40% of value, before the $750,000 maximum, the debt test, and the valuation are applied.
Now suppose the owner moves out and rents both units. The ceiling falls to 70% CLTV, and the line shrinks to about 20% of value. The cap drops to $500,000, and the credit floor moves up to 700.
Same building. Same equity. Half the borrowing room. That is why occupancy timing matters more than almost anything else on the file.
The debt test works the same way in both cases. The maximum DTI is 50%. It falls to 45% for credit profiles from 600 to 679, and a ratio above 45% requires a 680 minimum. The lender reviews your file on the interest-only payment calculated on the maximum draw, not on what you plan to borrow. A bigger line means a bigger test payment, even if you never draw it all.
How the Line Works After Closing
The line has two phases, and the second one is where landlords get surprised. The CFPB’s HELOC booklet explains the general mechanics: payments can change over time, and a draw period is followed by a repayment period. After the draw period you may or may not be allowed to renew.
On the wholesale programs Lendmire places, the structures are specific:
- Primary residences: Two structures exist. One has a 3-year interest-only draw followed by a 17-year repayment. The other has a 5-year draw followed by a 25-year repayment.
- Investment lines: Only the 5-year draw with 25-year repayment is offered.
- At closing: At least 75% of the line is drawn.
- Pricing: It floats through both phases and never converts to fixed.
- Later draws: The minimum draw after closing is $1,000 on the longer-runway structure.
When the draw phase ends, the payment starts amortizing and jumps. Stress-test that future payment against your rent and your vacancy, not just the interest-only payment you see in the first years.
The existing first mortgage stays in place. A standalone line can sit in first or second position, and on a duplex you already finance, it usually sits second. That keeps a low first-lien payment intact, which is the main reason owners choose a line over a cash-out refinance.
Where the General Rule Breaks
You rent both units or move out. If you do, the file drops to the investment tier. One BiggerPockets discussion of an owner-occupied duplex HELOC advises pulling the line before you leave. The same discussion cautions against financing your entire next down payment, because that leaves you fully leveraged.
An LLC holds title. Title must sit with you as an individual or in a revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title. A property already deeded to an LLC needs a vesting change, or a different product.
The building is bigger or different. Two to four units are eligible. Mixed-use, commercial, and agricultural-zoned properties are not, and neither are manufactured homes, co-ops, condotels, or log homes.
You own a lot of property. A borrower is limited to three lines. Owning more than 15 financed properties makes you ineligible.
The valuation comes in light. Lines of $500,000 or less ordinarily use an automated valuation. Small multifamily has thin comparable sales, so that value can land lower than you expect. A full appraisal is required above $500,000, and you can ask for one at any size. Lines above $500,000 are primary-residence only, cap at 75% CLTV, and need that appraisal.
The second unit sits empty or goes short-term. A vacant unit can complicate how a lender views rental support. Short-term rental rules can vary by city, county, HOA, and property type, so confirm local rules before relying on projected rental income.
Your state is outside the footprint. This line is available only in Lendmire’s 16 full-service states, a narrower list than its DSCR footprint. State rules can also restrict the product, so availability is confirmed at the start.
Tax questions. Expenses covering the whole duplex, such as mortgage interest and property taxes, are generally divided between the rented and personal parts under IRS Publication 527, and tax treatment varies, so consult a qualified professional.
Which Route Fits: HELOC, DSCR Cash-Out, or Neither?
A bank statement HELOC fits when you live in the duplex and want to keep your first mortgage. A DSCR loan fits when you do not live there. 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.
| Situation | Likely route | Why |
|---|---|---|
| Live in one unit, keep first mortgage | Bank statement HELOC | Primary-residence tier |
| Rent both units, personal title | HELOC, investment tier | 70% CLTV ceiling |
| Rent both units, LLC title | DSCR cash-out refinance | Property-level qualification |
| Strong rent, thin personal income | DSCR cash-out refinance | Rent covers payment |
A DSCR cash-out refinance qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Across most of the network, cash-out on a standard rental tops out around 75% LTV, with about six months of ownership expected first. Coverage of 1.00 is where select programs start, and stronger ratios open better terms. A separate select-lender path goes below 1.00, with leverage and terms adjusted.
Clearing 1.00 does not mean positive cash flow. Repairs, vacancy, management, and utilities sit outside the calculation. The complete DSCR loans guide walks through that test in full.
If the HELOC route interests you, Lendmire’s pages on HELOC requirements on a duplex and on how to qualify for an investment property HELOC on a duplex go deeper on each tier.
Honestly, this is a close call for many house-hackers. The HELOC keeps your first mortgage intact. The DSCR refinance replaces it, but it ignores your personal income entirely. Which is better depends on the size of your first-lien balance and how much you need.
Steps to Apply
1. Confirm occupancy. Decide which tier you are in before anything else, and state it honestly.
2. Check title. Confirm the deed shows you or a revocable trust.
3. Gather statements. Collect 12 or 24 months for each account that carries your income.
4. Clean up deposits. Separate rent from transfers and one-off deposits where you can.
5. Collect property documents. You need the mortgage statement, vesting information, and a lease or rent roll for the rented unit.
6. Check your debts. Know your DTI before you apply.
7. Run the numbers. The site’s illustrative calculator can show roughly how combined leverage works.
8. Compare programs. A broker shopping multiple wholesale lenders matches the file to the program that fits.
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. Call 828-256-2183 to talk through your duplex.
Frequently Asked Questions
Does a duplex I live in count as an investment property?
Not when you occupy one unit. The program reviews it as a primary residence, which allows up to 90% CLTV at a 720 or better profile. If you rent both units or move out, it moves to the investment tier, with a 70% CLTV ceiling and a 700 minimum score.
Can I use my tenant’s rent as income?
Usually only as support. On the programs Lendmire places files with, the line is sized from your personal file and equity, and rent does not raise it. Some lenders elsewhere count part of the rent, but that is program-specific.
Is a bank statement HELOC the same as a no-documentation loan?
No. It is reviewed on documented income under the applicable program, subject to lender guidelines. The lender reviews 12 to 24 months of deposits and still checks credit, debts, title, and valuation.
Can an LLC own the duplex?
Not for this product. Title must be held by you or a revocable living trust. If an LLC owns the building, a DSCR cash-out refinance is the usual alternative, subject to program terms.
What changes if I move out later?
The occupancy label changes, and so does the leverage. That is why many owners pull the line while still living in the duplex. Your lender’s terms on the line also matter, so read them before you move.
About Lendmire
Lendmire, NMLS# 2371349, is a mortgage brokerage that arranges home equity lines of credit through wholesale lending partners in its 16 full-service states. Lines on primary residences, second homes and investment properties are each reviewed individually by the lender under the program’s occupancy, credit and combined-loan-to-value 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, What you should know about home equity lines of credit
2. BiggerPockets, Owner-occupied duplex HELOC
3. IRS Publication 527, Residential Rental Property
This article is part of Lendmire’s bank statement HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Top Bank Statement HELOC Providers During and After a Divorce · Top Bank Statement HELOC Providers After a Quitclaim Deed · Top Bank Statement HELOC Providers to Buy a Car
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.