The Quick Read: A home equity line of credit (HELOC) is a revolving loan secured by your property that typically sits behind your existing mortgage, so you keep the first loan’s terms while borrowing against equity, but the line floats in price, runs in draw and repayment phases, and is capped by occupancy-based combined leverage and credit tiers.
- The first mortgage stays put. A line adds a second payment. A cash-out refinance replaces the first loan entirely.
- Occupancy sets the ceiling. Investment properties top out at 70% combined loan-to-value (CLTV). Primary residences and second homes reach 90% CLTV only with a 720 or better credit profile.
- It behaves more like a loan than a card. Most of the line is outstanding from the first day, so plan for the second payment immediately.
- The payment can move. Test the payment at the end of the draw period before you sign anything.
- Some properties cannot use one. LLC-titled rentals and properties under a first mortgage that restricts second liens usually point to a DSCR cash-out refinance instead.
What a HELOC Is and Where It Sits
A HELOC is a line you can borrow against, repay, and borrow against again, up to a limit, using your property’s equity as collateral. Equity is the property’s value minus what you owe on the first mortgage.
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.
The card comparison holds for a moment. You have a limit, and you draw what you need. It breaks fast, because the line is secured by real property. Miss payments, and the lender can go after the property.
Picture the stack. The first mortgage is the bottom layer, with its own balance, terms, and payment. The line is the layer on top. Lenders call it a second lien because it is paid second if the property is ever sold under pressure. On this network a line can also be placed in first position, but the second-lien case is the one that matters for owners who like their current mortgage.
That is the whole “better fit” argument. If your existing first mortgage has terms worth protecting, borrowing behind it leaves those terms alone. A cash-out refinance reprices and replaces the entire first balance, not just the new cash.
Keeping the first loan is not automatically the better choice, though. You are adding a second payment, and the new layer floats in price. Whether that trade works depends on how much you need, how long you will hold the debt, and what the property is.
How Much Can the Line Support?
The line is sized on combined leverage. The lender adds your first mortgage balance and the new line, then compares the total to the property’s value. That ratio is CLTV. The ceiling depends on how the property is used, and the credit tiers differ by occupancy.
| Occupancy | Max CLTV | Credit floor | Max line |
|---|---|---|---|
| Primary residence | 90% (720+ only) | 600 | $500,000 at 90% CLTV; $750,000 at 75% CLTV, 700+ (720 on the longer-runway program) |
| Second home | 90% (720+ only) | 640 | $500,000 |
| Investment property | 70% | 700 | $500,000 |
Those are program ceilings, not promises. They come from select wholesale lenders Lendmire places files with, and every figure is subject to lender guidelines and full file review. Lower credit tiers step the ceiling down. A primary residence at 700 can reach 85% CLTV on a line up to $500,000, and at 640 the ceiling is 80%.
Line size matters too. Lines run from $25,000 to $750,000. Anything above $500,000 is for primary residences only. It requires a credit profile of 700 or better (720 on the longer-runway structure), caps at 75% CLTV, and needs a full appraisal.
Here is the sizing math in percentages. Say your first mortgage is 50% of the property’s value and the property is your primary residence. At a 90% CLTV ceiling with a 720 or better profile, the line could reach up to 40% of value. On a primary residence at 75% CLTV, the room shrinks to 25% of value.
Now the same first mortgage on an investment property. The 70% CLTV ceiling leaves up to 20% of value. Same first loan, half the room.
The sliding-scale lesson is simple. The bigger the line relative to the first mortgage, the less the “keep the first loan” argument is worth. Borrow a small slice behind a large, low-cost first mortgage, and the blended cost barely moves. Borrow a large slice, and most of your debt now floats.
How Underwriting Treats the Line, Step by Step
A bank HELOC is underwritten to you, not to the property’s rent. That is the big difference from a DSCR loan, which qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Here is how the lines on this network get reviewed.
1. Eligibility screen. Is the property a type the program accepts, and can the borrower hold title in an eligible way? More on that below.
2. Credit. The program floor is 600, and the report can be no more than 90 days old at closing. The score model uses a single bureau score keyed to the primary wage earner. There are no rescores. Standards for tradelines and housing history vary by structure, and those standards apply across all financed properties, not just this one.
3. Debt-to-income (DTI). The maximum is 50%. Profiles from 600 to 679 are held to 45%. Going above 45% requires at least a 680 score. The lender reviews your file on the interest-only payment calculated on the maximum draw, not on what you plan to borrow.
4. Valuation. Lines at or below $500,000 ordinarily use an automated valuation with no traditional appraisal. A higher CLTV may require a secondary valuation. Every line above $500,000 needs a full appraisal, and you may request one in any case. A recent rehab is the classic reason to ask. An automated model may not see the value you added.
5. Derogatory history. A bankruptcy needs 4 years of seasoning from discharge or dismissal. Foreclosure history splits by program. One structure seasons a foreclosure at 7 years and a deed-in-lieu, pre-foreclosure, or short sale at 4 years. The other declines that history regardless of age. Investment files follow the 7-and-4-year path.
6. Exposure. A borrower is limited to three lines. A borrower with more than 15 financed properties is not eligible.
Notice what is missing. Rent coverage does not decide a line. Equity, credit, and your own debts do.
Draw Period, Repayment Period, and the Payment Change
The CFPB describes a HELOC as an open-end line you can borrow from repeatedly during a draw period. Many lines set minimum payments on the current balance. Available credit is replenished as you pay it down.
Experian notes repayment commonly runs about 20 years, and some lines instead end in a balloon, where the full balance comes due. Those terms are set by contract, not by rule.
The network’s structures are more defined. Primary residences and second homes have two draw structures:
- A 3-year interest-only draw followed by a 17-year fully amortizing repayment.
- A 5-year interest-only draw followed by a 25-year fully amortizing repayment.
Investment lines use the 5-year draw and 25-year repayment structure only. Other details apply to every structure:
- At least 75% of the line is drawn at closing.
- Pricing floats through both the draw and the repayment period, and it never converts to fixed.
- Later draws carry a minimum, commonly $1,000, on the structure that states one.
That 75% rule changes how you should think about the product. A card-style, borrow-as-you-go line is not what you get. Expect most of the money to be outstanding from the start, which means you carry the second payment from day one.
Interest-only is not the same as paying it down. The CFPB’s consumer booklet warns that minimum payments in some plans may not retire principal by the end of the term. When repayment begins, the payment steps up because principal now amortizes over the remaining years.
The same booklet makes two more points worth knowing. Lenders can freeze or reduce a line if the property’s value falls or your finances worsen, so the line is not guaranteed just because you were approved. And your property is the collateral, so default has consequences beyond a credit score.
The practical test is a stress test. Take the full line, assume it is fully drawn, and run the payment through the interest-only draw. Then run it again for the amortizing years. If the second number breaks your budget, the line is too large or the structure is wrong.
Where the General Rule Breaks
The general rule says a line preserves your first mortgage and costs less than refinancing. Several situations flip it.
LLC-titled property. Title must be held by you as an individual or by an inter vivos revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title. This is the sharpest structural difference from a DSCR loan. A rental already deeded to an LLC needs a vesting change, or a DSCR cash-out refinance instead, subject to program terms.
Property type. Single-family homes, 2-4 units, PUDs, townhomes, and condos, including non-warrantable condos, are eligible. Two- to four-unit properties need a 640 minimum on the longer-runway structure. Modular homes are eligible on that structure only. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned properties are not eligible.
Investment property limits. The ceiling is 70% CLTV and the credit floor is 700. A rental owner who counted on a market-wide 75% to 80% figure for second liens will find the network lower. Rental HELOC supply is thin across the market generally. NerdWallet says a line on an investment property is possible, but you may face fewer lenders and lower borrowing limits than on a primary home.
The first mortgage itself. Some first-mortgage notes restrict additional liens, so read yours before you apply. A line is also a second lien that must be paid off or subordinated if you later refinance the first loan. That matters if your plan is to refinance later.
Listings and availability. A property listed for sale, or listed within the past 60 days, is ineligible in several states. Lendmire’s home equity line placements cover 16 full-service states: AL, CA, CO, FL, GA, IN, MI, MT, NM, NC, OH, PA, TN, TX, VA, and WA. That is narrower than its 41-market DSCR footprint. New Mexico and Ohio add a CLTV cap that depends on the credit profile.
When a line is the wrong tool, the next step is not another bank line. It is a different product.
Keep the First Mortgage or Replace It?
A DSCR cash-out refinance is the usual alternative for an investment property. It replaces the first loan, so the new loan’s terms apply to the whole balance. It qualifies primarily on property-level rental income covering the payment, subject to lender guidelines.
| Factor | HELOC | DSCR cash-out refinance |
|---|---|---|
| First mortgage | Stays in place | Replaced |
| Reviewed on | Your credit and DTI | Property rent vs. payment |
| Investment leverage | 70% CLTV ceiling | Around 75% LTV, standard rentals |
| Title | Individual or revocable trust | LLC possible, per program terms |
| Pricing | Floats, never fixed | 30-year fixed spine |
On the cash-out side, about 6 months of seasoning is the common expectation. Credit floors start at 620 in parts of the network, most programs want around 660, and 700 or better opens the strongest leverage. Coverage of 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Reserves vary by lender, leverage, and loan size, and they commonly run around 6 months of PITIA, which is principal, interest, taxes, insurance, and any association dues.
One caution on DSCR math. Clearing 1.00 means rent covers PITIA. It does not mean the property cash flows. Repairs, vacancy, management, utilities, and capital expenses sit outside the calculation. For the full picture, see Lendmire’s complete DSCR loans guide.
Use these questions to decide:
- How big is the draw relative to the first mortgage? A small slice behind a large, favorable first loan favors the line. A large slice shifts the answer toward a refinance.
- How long will you hold the debt? A floating-price line suits a short bridge better than permanent capital. Counting on a later refinance to take it out can fail if values have not grown.
- Do you need staged access? With at least 75% drawn at closing, you get less staging than the product name suggests.
- Whose name is on title? An LLC points away from the line.
- Does your first mortgage have terms you would lose? If so, a second lien keeps them. If not, a refinance can simplify to one payment.
- Can the cash flow carry the second payment? Build it into the coverage test as an added obligation.
What to Have Ready
A clean file saves rework. Gather these before you apply:
- Government ID and a current credit authorization. The report must be no more than 90 days old at closing.
- Income documentation sufficient to support the DTI calculation, per the applicable program.
- Your latest first mortgage statement and the note, so the lender can check for lien restrictions.
- Your vesting documents, showing whether title sits with you or a trust.
- Property details: type, unit count, and any listing history within the past 60 days.
- A rehab scope and receipts, if recent improvements justify asking for a full appraisal.
Key Terms Defined
Combined loan-to-value (CLTV): the first mortgage plus the new line, divided by the property’s value.
Draw period: the window when you can borrow from the line, usually with interest-only minimum payments.
Repayment period: the phase after draws end, when the balance amortizes with principal and interest.
Second lien: a loan secured by the same property that ranks behind the first mortgage for repayment.
Subordination: an agreement that keeps a second lien behind a new first mortgage when the first loan is refinanced.
Debt-to-income (DTI): your monthly debt payments divided by your monthly income.
DSCR: debt service coverage ratio, which is the property’s monthly rent divided by its PITIA.
Frequently Asked Questions
Does a HELOC change my first mortgage?
No. A line sits as a separate loan behind your first mortgage, so the first loan’s balance, schedule, and terms stay as they are. You do add a second payment. If the first mortgage is later refinanced, the line must be paid off or subordinated.
Can I get a line on a rental held in an LLC?
Not on this network. Title must be held by an individual borrower or an inter vivos revocable living trust. A property already deeded to an LLC needs a vesting change, or a DSCR cash-out refinance instead, subject to program terms.
What happens when the draw period ends?
Draws stop and the balance amortizes with principal and interest, so the payment usually steps up. On this network the repayment runs 17 or 25 years depending on the draw structure, and pricing still floats. Some lines elsewhere in the market end in a balloon instead.
How much can I borrow against a rental property?
Investment property lines run up to 70% CLTV, with a 700 credit minimum and a $500,000 maximum line. Your first mortgage balance counts against that ceiling. Every figure is subject to lender guidelines and file review.
Is a HELOC cheaper than a cash-out refinance?
It depends on how the first mortgage compares with what a refinance would replace it with, and on how large the line is relative to that balance. A small line behind a favorable first loan often favors keeping it. A large draw on a floating line can erase that advantage.
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. Lendmire is a mortgage broker and arranges financing through select lenders in its wholesale network; this is not a commitment to lend. An illustrative calculator on the site can sketch the combined leverage before you apply.
About Lendmire
Lendmire is a mortgage brokerage (NMLS# 2371349) arranging home equity lines of credit — primary-residence, second-home and investment-property lines — through a wholesale lending network in its 16 full-service states. Eligibility is determined by the lender on each file. 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
2. Experian
3. CFPB HELOC consumer booklet
4. NerdWallet
This article is part of Lendmire’s HELOC & home equity loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How a DSCR HELOC Works to Refinance an Existing HELOC Into a DSCR Loan · DSCR HELOC Requirements on Little Income · DSCR HELOC Rules Before the Divorce Is Final
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.