The Quick Read: For most investors, the best program for the situation is a standalone second-lien line that sits behind the existing first mortgage and leaves its balance, term, and payment untouched, and on investment property in the network it tops out at 70% combined loan-to-value and $500,000, subject to lender guidelines. The line is open only to individuals and revocable living trusts with a 700 minimum credit profile, in the 16 states where Lendmire offers full-service lending.
- The first mortgage stays as written, but its balance still counts against your combined leverage.
- Investment lines reach 70% CLTV at both the 700 and 720 credit tiers, so a higher score does not buy more leverage.
- LLC-titled rentals are not eligible for this line. A DSCR cash-out refinance is the usual alternative for them.
- At least 75% of the line is drawn at closing, so it works poorly as a draw-as-needed rehab fund.
- Every figure here is subject to lender guidelines and a full file review. Nothing here is a commitment to lend.
What Does Keeping the First Mortgage Actually Mean?
It means the lender on your first loan is not paid off, and the loan keeps running on its own terms. The new line is recorded behind it as a second lien. The new money is priced and structured on its own, and the old loan is not repriced. That matters most when the first mortgage is a cheap loan you do not want to give up.
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.
“Keeping” protects some things and leaves others exposed. This is where most files go wrong, because investors assume the first loan drops out of the picture.
| Item | Stays the same | Still affected |
|---|---|---|
| First-loan payment and term | Yes | |
| First-loan pricing | Yes | |
| Combined leverage | The first balance counts in full | |
| Debt-to-income | The first payment stays in the ratio | |
| Foreclosure exposure | Two liens now secure the property | |
| Line test | Run on the maximum draw, not the amount you take |
The last row catches people. The line is qualified on the interest-only payment calculated on the maximum draw. A borrower who plans to draw half still gets tested as if the whole line were drawn.
Key Terms Defined
Second lien: a loan recorded behind the first mortgage, paid after the first lender if the property is ever sold to satisfy debts.
Combined loan-to-value (CLTV): all recorded liens added together, divided by the property value.
Draw period: the stretch when you can borrow against the line and pay only interest. On investment lines in the network this is five years.
Repayment period: the stretch after the draw ends, when you can no longer borrow and the balance amortizes. On investment lines this is 25 years.
Automated valuation: a computer-generated value estimate used in place of a traditional appraisal.
Vesting: how title is held, whether in your personal name, a revocable trust, or an entity.
How Much Room Does Your First Mortgage Leave?
The formula is simple. Maximum line equals the property value times the CLTV ceiling, minus every lien balance already recorded. On an investment property in the network, the ceiling is 70% CLTV, and the line itself cannot exceed $500,000.
Run three versions, all in percentages of value:
1. Low first balance. A first mortgage at 40% of value leaves up to 30% of value for the line. At higher values the $500,000 cap becomes the binding limit instead.
2. Mid first balance. A first mortgage at 55% of value leaves 15% of value. The line exists, but it is small.
3. High first balance. A first mortgage at 65% of value leaves 5% of value. Most investors will find that too thin to justify the structure.
Notice what does not appear in the formula: the first loan’s pricing. A cheaper first mortgage creates no extra room. Only a smaller balance does. A second lien or tax lien already on the property comes out of the same pool and shrinks the room further.
Valuation is usually painless. Because an investment line caps at $500,000, and full appraisals begin only above $500,000, these files ordinarily run on an automated valuation. A borrower can still request a full appraisal. Sometimes a higher CLTV triggers a secondary valuation, but the ceiling here is 70%.
What Does the Network’s Investment Line Look Like?
The line is a standalone product in first or second lien position. With a mortgage already in place, it sits second. A free-and-clear rental can take a first-lien line. Putting a first-lien line on a mortgaged rental generally means paying off the old loan, which defeats the purpose.
The parameters that matter for investment property, each subject to lender guidelines:
- Leverage: 70% CLTV on investment property at both the 720 and 700 credit tiers. Credit above 700 buys eligibility, not extra leverage.
- Credit: 700 is a hard floor for investment property, with no tier beneath it. The score model is a single-bureau pull keyed to the primary wage earner, and the report can be no more than 90 days old at closing.
- Line size: $25,000 to $500,000 on investment property (Michigan’s floor is $10,000). Lines above $500,000 are for primary residences only.
- Structure: a 5-year interest-only draw, then a 25-year fully amortizing repayment. At least 75% of the line is drawn at closing, and pricing floats through both periods without converting to fixed.
- Debt-to-income: 50% maximum, with the test run on the interest-only payment at the maximum draw.
- Exposure: a borrower is limited to three lines, and an owner of more than 15 financed properties is not eligible.
- 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.
Availability is narrower than the DSCR footprint. These lines are offered only in the 16 states where Lendmire provides full-service lending: AL, CA, CO, FL, GA, IN, MI, MT, NM, NC, OH, PA, TN, TX, VA, and WA. Lendmire’s DSCR investor programs cover 41 markets, including Washington, D.C., so an investor outside those 16 states is looking at a different product.
Does a Second Lien Trigger the First Lender’s Due-on-Sale Clause?
Generally no. Federal law governs due-on-sale clauses, and the statute at 12 U.S.C. §1701j-3 lets lenders enforce them even where state law would not. A Duke Law Journal note covers the background of the Garn-St Germain Act, which carved out exceptions to that enforcement.
Law firm commentary on the Act says a loan subordinate to the first mortgage, such as a second mortgage or HELOC, does not trigger the clause as long as it does not transfer occupancy rights. The same commentary says the Act’s protections apply to residential property with fewer than five dwelling units. Treat that as a general explanation, not legal advice. The exceptions are written mainly around owner-occupied and family-transfer situations. Read your own note and deed of trust, and confirm with counsel or your servicer before you record anything.
Who Fits, and Where the Rule Breaks
The best program for your situation depends on title, property type, credit, and how you plan to use the money. Here are the named edge cases that decide most files.
LLC title. This is the sharpest structural difference from a DSCR loan. Only the individual borrower or an inter vivos revocable living trust can hold title. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot. A rental already deeded to an LLC needs a vesting change first, or a DSCR cash-out instead. Check the vesting before anything else, because it ends more files than any other item.
Property type. Single-family, 2-4 units, PUD, townhome, and condominium, including non-warrantable condos, are eligible. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned properties are not.
Listed properties. A property listed for sale, or listed within the past 60 days, is ineligible in NC, PA, TN, TX, and WA.
Texas. Investment properties are eligible as non-homestead transactions, and Texas properties are limited to 10 acres.
Hard money first. A short-term first loan changes the exit plan, because a second lien must be handled when the first is paid off.
Later refinance of the first. A second lien has to be subordinated or paid off when the first is refinanced. Stacking a line and a later cash-out tightens the combined-leverage cap each time.
Staged-capital plans. Because at least 75% of the line funds at closing, this tool fits a defined need, not a rehab you will draw on over months.
Line or Cash-Out Refinance: Which Fits?
Run this comparison when the first mortgage is cheap and you need a defined sum. The DSCR side is a separate program family, and its figures apply to standard rentals, subject to lender guidelines.
| Factor | Second-lien investment line | DSCR cash-out refinance |
|---|---|---|
| First mortgage | Kept as is | Paid off and replaced |
| Leverage ceiling | 70% CLTV | Around 75% LTV |
| Review basis | Credit, equity, DTI | Rent against PITIA |
| Title | Individual or revocable trust | LLC allowed, subject to lender program eligibility |
| Cash delivery | At least 75% at closing | Lump sum at closing |
Two different tests sit behind that table. The line looks at your personal credit and debt-to-income. The DSCR loan compares rent to PITIA, with 1.00 as the point where select programs start. A separate select-lender path takes coverage below 1.00 with leverage and terms adjusted. Clearing 1.00 does not mean positive cash flow, because repairs, vacancy, management, utilities, and capex sit outside the calculation.
Cash-out refinances commonly expect about 6 months of seasoning and often around 6 months of PITIA in reserves, though reserves vary by lender, leverage, and loan size. For an investor with a large portfolio or hard-to-document personal income, the DSCR path may fit where the line does not. The complete DSCR loans guide walks through those mechanics.
Thinking out loud: when the first mortgage is cheap and the equity is deep, the line usually wins on cost of the new money. When the first balance is high or the title sits in an LLC, the refinance often wins by default.
What Are the Risks?
The CFPB’s explanation of a HELOC describes the structure plainly: you borrow during a draw period, then move to a repayment period when borrowing stops. The same page warns that payments often jump significantly once repayment begins and that some plans can require the whole balance at that point.
On this network the draw period is interest-only, so the payment steps up when amortization starts. Pricing floats through both periods and never converts to fixed. Plan for the step-up before you draw, not after.
Then there is foreclosure exposure. Two liens secure the property now, and a default on either one puts the property at risk. The first mortgage still counts in your debt ratios, and the line is tested at its full limit.
Last, ask what the money is for. Funds used to buy another rental, fund a rehab, or build reserves are different uses with different tax consequences. Tax treatment varies; consult a qualified professional.
What Documents and Steps Does the File Need?
1. Check title first. Confirm the deed shows you or your revocable trust. Fix vesting before applying.
2. Pull the first-mortgage payoff statement. Get the current balance and confirm no second or tax liens are recorded.
3. Run the room formula. Value times 70%, minus all lien balances, capped at $500,000. If the answer is thin, stop here.
4. Gather credit and income documents. A single-bureau credit report must be no more than 90 days old at closing. DTI is qualified on the maximum draw.
5. Confirm property eligibility. Check the property type, any recent listing, and state restrictions.
6. Collect insurance and lease evidence. Declarations pages and current leases help the lender review the file.
7. Request a valuation preference. Most files run on an automated valuation, but you can ask for a full appraisal.
Common Mistakes
- Assuming a cheaper first loan creates more room. Only a smaller balance does.
- Applying with the property still in an LLC.
- Planning to draw slowly when 75% funds at closing.
- Counting on a higher credit score to lift leverage on investment property.
- Ignoring the 50% debt-to-income test on the maximum draw.
- Overlooking an existing second lien or tax lien.
Lendmire’s role here is a broker’s: it matches the property, equity, credit profile, and goals against several wholesale HELOC lenders and places the file with the program that fits.
Frequently Asked Questions
Can I get a HELOC on a rental that already has a mortgage?
Yes, through a second-lien line recorded behind the first mortgage. On investment property in the network, the line cannot push combined leverage past 70% CLTV or exceed $500,000, and it requires at least a 700 credit profile.
Does my first mortgage count against the limit?
Yes. Every recorded lien counts toward combined leverage, so a larger first balance leaves less room for the line. The first payment also stays in your debt-to-income ratio.
Can an LLC hold title on the property?
Not for this line. Only individuals and revocable living trusts qualify. A property already in an LLC needs a vesting change, or a DSCR cash-out refinance, subject to lender program eligibility.
Does a higher credit score raise the leverage?
No. A 720 score and a 700 score both reach 70% CLTV on investment property. Above 700, credit does not add leverage.
Does the property need a tenant?
The investment line is reviewed on credit, equity, and debt-to-income, not on rent. Lease evidence still helps the file, and DSCR cash-out refinances do rest on rental income.
Where This Leaves You
If you own a rental with a first mortgage you want to keep, the first step is to check title, then run the room formula. 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. You can reach the team at 828-256-2183.
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.
Investors who want the broader program framework can review how DSCR loans work.
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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. 12 U.S.C. §1701j-3, Cornell Legal Information Institute
2. Duke Law Journal note on Garn-St Germain
3. Legal commentary on Garn-St Germain exceptions
4. CFPB’s explanation of a HELOC
This article is part of Lendmire’s investment property HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Best Investment Property HELOC Program on a Property With a Hard Money First Mortgage · Best Investment Property HELOC Program on a Fourplex for a First-Time Landlord · Best Investment Property HELOC Program to Buy Rental Property
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.