The Quick Read: A few lenders will place a second-lien line behind a cheap first mortgage on a rental, and your first loan stays exactly as it is. Through Lendmire’s wholesale network, an investment-property line is a narrow product with tight limits and a borrower-based test, not a rent-based one. Lines are available only in Lendmire’s 16 full-service states.
- An investment line tops out at 70% combined loan-to-value (CLTV) and $500,000.
- Minimum credit is 700. A 720 score does not raise leverage on an investment line.
- The line is a first or second lien, and pricing floats for the life of the line.
- Title must sit with you or your revocable living trust. An LLC cannot hold it.
- Lendmire is a broker, not the lender. Every figure is subject to lender guidelines and full file review.
You bought a rental years ago with a first mortgage you would never get again. Now you want cash for the next deal. Refinancing would swap that loan for a new one. A line behind it lets you keep the old loan and borrow against the equity left over.
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.
Key Terms Defined
Second lien: a loan that sits behind your first mortgage. If the property is sold or foreclosed, the first lender is paid first.
Combined loan-to-value (CLTV): your first mortgage balance plus the new line, divided by the property’s value.
Draw period: the stretch when you can borrow from the line, usually paying interest only.
Repayment period: the stretch after the draw period when you pay the balance down on a fixed schedule.
Open-end credit: credit you can borrow, repay, and borrow again, as the CFPB’s HELOC explainer describes it.
Can You Really Get a Line Behind a Low First?
Yes, but the lender pool is small. Many large retail lenders will not write a home equity line on a rental at all. A second-lien lender takes on more risk, and a non-owner-occupied property adds to it.
Our network is a different kind of channel. Lendmire brokers to select wholesale partners that write standalone lines in first or second position. If you have a first mortgage, the line goes second and that loan stays untouched. If there is no first mortgage, the line goes first, and the “keep the low first” benefit disappears because there is nothing to keep.
This is a different product from the investor loans most people associate with Lendmire. Our complete DSCR loans guide covers rent-based financing. A line behind your first works on a different logic, covered below.
How Much Line Does Your Equity Support?
Start with the CLTV ceiling. On an investment property in our network, that ceiling is 70% CLTV. The CFPB’s HELOC booklet lays out the standard method: take the allowed percentage of the appraised value, then subtract what you still owe on the first mortgage. What remains is the most the line can be.
Three pictures show how this plays out. None needs a dollar figure.
- Ample equity. A rental with a first mortgage well under half of its value. After the 70% ceiling, plenty of room remains, so the line is limited by the $500,000 cap or by what you actually need.
- Moderate equity. A first mortgage near 55% to 60% of value. The room under the ceiling is a thin slice, and you should ask whether that slice justifies a second lien at all.
- Thin equity. A first mortgage at or above 65% of value. Almost nothing is left. The line is probably not worth pursuing, and a different structure deserves a look.
The pattern is simple. The lower your first-mortgage balance relative to value, the bigger your line. A very cheap first often means a long-held property with plenty of equity, which is why this strategy suits older purchases.
Credit above 700 does not help here. Both the 720 tier and the 700 tier reach the same 70% CLTV on an investment line, so a higher score buys eligibility, not leverage. And 700 is a hard floor with no tier beneath it.
How Underwriting Treats This Line, Step by Step
Here is the sequence a file follows.
1. The first-mortgage balance is pulled. The line can only use the room left under 70% CLTV.
2. The lender values the property. Because an investment line caps at $500,000 and full appraisals begin only above that, these lines run in the automated-valuation lane. Many close with no traditional appraisal. A higher CLTV may call for a secondary valuation, and you can always request a full appraisal.
3. Your credit is checked. The network uses a single-bureau score keyed to the primary wage earner. The report must be no more than 90 days old at closing, and there are no rescores.
4. Your debt-to-income ratio (DTI) is tested. The maximum is 50%. A ratio above 45% requires a 680 score, and 700 is already your floor. Your DTI is calculated on the interest-only payment at the maximum draw.
5. Property and title are reviewed. More on this below.
Notice what is missing: rent. The CFPB booklet says lenders test repayment ability through income, debts, other obligations, and credit history. That matches how these lines work in our network. A rental line looks at you as a borrower. A rent-based loan looks at the property. Don’t confuse the two.
That matters if your personal DTI is already stretched by a large portfolio. Rent coverage does not rescue a line that your income cannot support. For more on how these files are tested, Lendmire’s piece on how investment property HELOC underwriting works behind a first lien goes deeper.
Where This Line Breaks the Usual Rules
Edge cases decide more of these files than the headline numbers do.
LLC title. This is the sharpest difference from a rent-based loan. The title must be held by you as an individual or by your inter vivos revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title. If your rental is already deeded to an LLC, you need a vesting change first, or a DSCR cash-out instead. Whether to re-vest is a case-by-case call, so talk it through with your attorney.
Property type. Single-family, 2-4 units, PUD, townhome, and condominium, including non-warrantable, are eligible. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural zoning are not offered.
Portfolio size. You are limited to three lines. Combined exposure caps at $2,000,000 on the higher-leverage wholesale program and $750,000 on the longer-runway program. A borrower with more than 15 financed properties is not eligible.
Listed properties. A property listed for sale, or listed within the past 60 days, is ineligible in NC, PA, TN, TX, and WA.
The first lender. Check your first mortgage documents for any restriction on junior liens. Rules differ by lender, so read the paperwork before you apply.
A later refinance. If you refinance the first loan down the road, a junior line must be paid off or subordinated. Plan for that before you borrow.
What the Structure Looks Like
Investment lines run a single structure: a 5-year interest-only draw followed by a 25-year fully amortizing repayment. At least 75% of the line is drawn at closing. Pricing floats across the draw and the repayment period and never converts to fixed.
Line size runs $25,000 to $750,000 across the network, with Michigan’s floor at $10,000. Anything above $500,000 is for primary residences only, so an investment line stops at $500,000. After closing, the minimum subsequent draw is $1,000 on the longer-runway program, except Texas at $4,000.
Two payment realities follow. First, your payment steps up when repayment begins. Second, a floating price means your cost can move in either direction. The CFPB’s guidance on HELOCs notes draw periods can run long, but the payment shock at the end is the risk to model.
In practice, a thin-margin rental is the worst fit. If your rent barely covers the first mortgage, adding a second payment can turn a steady property into a stress test.
Keep the First or Replace It?
This is the real decision. Use the table as a frame, not a verdict.
| Factor | Line behind your first | Cash-out that replaces it |
|---|---|---|
| Your existing first loan | Stays untouched | Paid off and replaced |
| Qualifies primarily on | Your income, DTI, credit | Property rent covering payment |
| Title | Individual or revocable trust only | LLC possible, per lender terms |
| Investment ceiling | 70% CLTV, $500,000 line max | About 75% on standard rentals |
| Pricing | Floats, never fixed | Fixed structures available |
| Best fit | Cheap first, modest cash need | Large cash need, entity-held rental |
A standard-rental cash-out tops out around 75% LTV across most of the network, and about six months of seasoning is the common expectation. On short-term-rental collateral, the cash-out ceiling is 70%. Rent-based files qualify primarily on property-level rental income covering the payment, subject to lender guidelines.
Keep the first if the rate gap is wide, your cash need is modest, and your own income and DTI can carry a second payment. Replace it if you need a lot of cash, hold the rental in an LLC, or your equity is too thin for the line to matter. Lendmire’s comparison of an investment property HELOC versus a cash-out that replaces a low first walks through the blended-cost thinking.
Thinking it through honestly: when the first mortgage is truly cheap and the line is small, keeping it usually wins. When the line would be large, the floating price on a big balance is a bigger risk than the savings on the first. That is a genuine toss-up for mid-sized needs.
Risks You Should Price In
- Lien order. The second lien sits behind the first in a foreclosure. Lenders price that in, and you should too.
- Cross-default. Missing payments on either loan puts the property at risk.
- Line freezes. Lenders can freeze or reduce lines only in circumstances the rules list, such as a significant drop in property value. The Federal Reserve’s compliance outlook describes the notice and cure rules on consumer lines. Whether those protections reach a business-purpose rental line depends on your line agreement, so read it. An open line is not guaranteed cash.
- Debt stacking. Keeping the first does not make it vanish from your debt ratio or leverage math.
- Variable pricing. Payments can rise during both the draw and the repayment period.
Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.
How to Shop for These Lenders
Here is the order that saves time, plus a question list.
Order of approach. Start with a broker who sees several wholesale partners, then check portfolio banks and credit unions in your area. Ask each whether they write non-owner-occupied lines at all before anyone pulls your credit.
Questions to ask:
1. Do you write lines on non-owner-occupied rentals, and in first or second position?
2. What is the maximum CLTV on an investment property, and the maximum line?
3. Is title in an LLC accepted, or must it be in my name or a revocable trust?
4. How is the property valued: automated model or appraisal?
5. Do you qualify me on the interest-only payment at the maximum draw?
6. What share must be drawn at closing, and what are the later draw minimums?
7. How does pricing float, and does it ever convert to fixed?
8. What happens to the line if I later refinance my first mortgage?
Skip lenders that cannot answer questions 1 through 3. You will save a credit pull.
What a Broker Sees on These Files
Files like these tend to stall on three items: title held in an LLC, a first-mortgage balance too high for the 70% ceiling, and a DTI that a large portfolio has already pushed up. Checking those three first saves the most time. A rate-based savings story rarely survives thin equity.
Frequently Asked Questions
Can I do this if my rental is in an LLC?
Not as the line is structured here. An LLC cannot hold title on these lines. A property already deeded to an LLC needs a vesting change, or a DSCR cash-out refinance instead, subject to lender program terms. Talk to your attorney before moving title.
Will my first lender object to a second lien?
Some first-mortgage documents restrict junior liens, so read yours before applying. A lender’s reaction depends on those terms and not on the new line itself. Your first mortgage stays in place either way.
What if I want to refinance the first loan later?
The junior line must then be paid off or subordinated. Plan for that choice before you draw, because it can limit how freely you refinance the first mortgage later.
Does clearing a DSCR of 1.00 mean this line is easy to get?
No. This line qualifies you as a borrower through income, DTI, and credit, not through the property’s rent. Rent coverage and the cash left after repairs, vacancy, and management are separate questions from whether the line is approved.
How is this different from a DSCR cash-out?
A line behind your first leaves the first loan alone and tests you personally. A DSCR cash-out replaces the first loan and qualifies primarily on property-level rental income covering the payment, subject to lender guidelines.
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. Rental-income rules can vary by lender, so confirm fit before you assume a line is available.
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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References
3. Philadelphia Fed Consumer Compliance Outlook
This article is part of Lendmire’s investment property HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can a BRRRR Investor Get a DSCR Cash-Out Refinance With No Seasoning? · Does an All-Cash Buyer Qualify for Delayed Financing After Using a HELOC? · How a Low First-Lien Mortgage Changes the Cash-Out vs HELOC Math
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.