The Quick Read: The best program depends on the property’s occupancy, your credit profile, and how much room the first mortgage leaves under the combined leverage ceiling. A standalone second-lien line leaves your first mortgage untouched, and the wholesale programs Lendmire places files with size it from combined loan-to-value, not from the drawn balance alone.
- On an investment property, the network ceiling is 70% CLTV, with a 700 minimum credit score and a maximum line of $500,000.
- On a primary residence, ceilings reach 90% CLTV, but only at a 720 or better credit profile.
- Titling matters: the borrower or a revocable living trust must hold title, and LLC-held rentals are not eligible.
- The first mortgage must allow a junior lien, so read the note and deed of trust before anything else.
- If you refinance the first mortgage later, the junior lender must agree to stay behind it.
Most investors who search this phrase want a new line recorded behind a first mortgage they plan to keep. That is the main subject here. A second meaning exists, where an existing line agrees to stay behind a new first mortgage, and it gets its own section below.
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.
What Does “Subordinating Behind an Existing First” Actually Mean?
The phrase covers two different events, and mixing them up causes most of the confusion. In the first, a new line of credit is recorded as a junior lien behind a first mortgage you intend to keep. In the second, a line already on the property agrees to remain behind a brand-new first mortgage after a refinance.
Nolo explains that a home equity loan or line is recorded as a lien and called a junior or subordinate mortgage, ranking below the first. In the refinance case, the older line would normally move up to first position because it was recorded first. The new lender asks the line holder to sign a subordination agreement so the order stays the same.
Notice who has the power in each case. In the first, you choose a program and a lender decides whether to write a second behind your first. In the second, the existing junior lender holds the decision, and it can say no.
How Does Underwriting Treat a Second-Lien Line? Step by Step
Underwriting follows a short, predictable sequence. Knowing it lets you check your own file before applying.
1. First-mortgage review. The lender needs the first mortgage to permit a junior lien. This is a document question, not a rate question.
2. Combined loan-to-value. All recorded liens are added together and divided by property value. The maximum line is the CLTV cap times value, minus every recorded lien.
3. Valuation. On the network’s programs, lines at or below $500,000 ordinarily run an automated valuation, though a higher CLTV may require a secondary valuation. Every line above $500,000 needs a full appraisal, and a borrower may request one in any case.
4. Borrower review. This is a personal-credit product. The review weighs credit, debt-to-income, and the first-mortgage payment. Debt-to-income tops out at 50%, drops to 45% for profiles from 600 to 679, and any ratio above 45% requires a 680 minimum. Qualification runs on the interest-only payment calculated on the maximum draw.
5. Recording. The line is recorded as a second lien. The first mortgage keeps its balance, terms, and maturity.
Run the arithmetic early. Suppose the first mortgage already consumes most of the allowed CLTV. Then the room left for a line is thin, and a cash-out refinance that replaces the first may be the better comparison.
One structural point is worth stating plainly. Lenders count the line limit toward CLTV, not just what you draw, so a conservative first draw does not shrink the size of the combined exposure the lender reviews.
Which Program Structure Fits Your Property?
Occupancy decides the ceiling, and the network does not offer one number for everyone. The figures below are typical program guidelines, subject to lender guidelines and full file review.
| Occupancy | Max CLTV | Min credit | Max line |
|---|---|---|---|
| Investment property | 70% | 700 | $500,000 |
| Second home | 90% (at 720+) | 640 | $500,000 |
| Primary residence | 90% (at 720+) | 600 | $500,000 at 90% CLTV; $750,000 at 75% CLTV, 700+ (720 on the longer-runway program) |
On a primary residence, ceilings step down with credit. A 720 profile reaches 90% CLTV up to $500,000, while a 620 profile sits at 70% up to $400,000. Investment lines do not have a higher tier: 70% CLTV is the top, no exceptions.
Texas treats a primary residence as a homestead, which caps it at 80% combined loan-to-value. Second homes and investment properties there follow the standard tables.
Market surveys, such as NerdWallet, note that lenders view rentals as higher default risk, so the pool is smaller and limits are lower than against a primary home. That matches what a broker sees. The network figure for an investment line is 70% CLTV, and few lenders write the product at all.
Draw and repayment structure
The line can sit in first or second position. Investment lines run a 5-year interest-only draw followed by a 25-year fully amortizing repayment. Primary residences and second homes also have a 3-year draw with a 17-year repayment option. At least 75% of the line is drawn at closing, and pricing floats through both the draw and repayment periods without converting to fixed. After closing, the minimum subsequent draw is $1,000 on the longer-runway structure.
That 75% draw requirement deserves attention. A HELOC is usually pitched as a flexible reserve you tap later. Here, most of it is used at closing. Investors who want a mostly undrawn standby line should plan around that.
Does Your First Mortgage Allow a Junior Lien?
For most conventional residential first mortgages, creating a second lien does not trigger the first lender’s due-on-sale clause. FedLaws summarizes the federal Garn-St Germain exceptions, including a subordinate lien that does not transfer occupancy rights, and notes the protections apply only to residential property with fewer than five dwelling units.
That statute protects you from acceleration. It does not guarantee a second-lien lender will lend, and it does not override restrictive covenants in the first-lien documents themselves. A first mortgage that bars additional financing can end the deal regardless of equity.
So read three things before you apply:
- The note and the deed of trust or mortgage, looking for additional-lien language.
- Any riders attached to the first loan.
- Whether the first mortgage is a private, portfolio, or non-traditional loan with its own terms.
Have an attorney read the language if it is ambiguous. This is general information, not legal advice.
Where the General Rule Breaks: Edge Cases
Several situations flip the answer.
LLC-owned rentals. This is the sharpest difference from a DSCR loan. Title must be held by an individual borrower or a revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title on this product. A rental already deeded to an LLC needs a vesting change, or a DSCR cash-out refinance instead. Investors who hold everything in entities will often find the DSCR route is the only workable one.
An existing second lien. An existing line counts against CLTV, and this product does not go behind another junior lien in a third position. Usually the existing line must be paid off or replaced.
A paid-off rental. If nothing is recorded ahead of the new line, it takes first position. That changes the sizing math entirely, because the whole CLTV allowance is available.
Property type. Single-family, 2-4 units, PUDs, townhomes, and condominiums, including non-warrantable condos, are eligible. Manufactured homes, co-ops, condotels, log homes, and commercial, mixed-use, or agricultural properties are not offered.
Exposure limits. A borrower is limited to three lines, and anyone with more than 15 financed properties is not eligible. Large portfolio owners hit that ceiling sooner than expected.
Availability. This is a full-service product available in only 16 states: AL, CA, CO, FL, GA, IN, MI, MT, NM, NC, OH, PA, TN, TX, VA, and WA. That is narrower than Lendmire’s 41-market DSCR footprint.
Listed properties. A property listed for sale, or listed within the past 60 days, is ineligible in NC, PA, TN, TX, and WA.
HELOC Behind the First, Cash-Out Refinance, or DSCR Cash-Out: Which Fits?
The core decision is whether to keep or replace the first mortgage. This table frames it.
| Factor | Second-lien line | Cash-out refinance |
|---|---|---|
| First mortgage | Stays in place | Replaced |
| Reviewed on | Personal credit and DTI | Rent coverage (DSCR) |
| Title | Individual or revocable trust | LLC possible, per program terms |
| Leverage on investment | Up to 70% CLTV | Up to about 70% LTV |
| Existing second lien | Must be cleared | Can be rolled in |
Keep the first mortgage and add a line when the first has terms worth protecting, your personal income supports the debt-to-income test, and title sits in your own name. Replace it with a cash-out refinance when the property is in an LLC, personal debt-to-income is tight, or the first already uses most of the allowed leverage. A DSCR cash-out qualifies primarily on property-level rental income covering the payment, subject to lender guidelines, which is a different test from a personal-credit line. Lendmire’s complete DSCR loans guide walks through how that route works.
Honestly, this is a genuine toss-up for many investors. The line is cheaper to keep alive when the first is valuable, but the personal-income test shuts out self-employed borrowers whose tax returns show modest income. For them, the DSCR path often wins on qualification alone.
What Happens When You Refinance the First Later?
Now the second meaning of subordination. If you replace the first mortgage while a line sits behind it, the line would move into first position unless its holder signs a subordination agreement. Three points matter.
It is a consent, not a right. The junior lender decides. The new first lender only asks. If it declines, you have two options: pay off and close the line, or fold everything into one new first mortgage.
A zero balance does not remove the lien. A recorded line with nothing drawn still needs a subordination or a formal payoff and release. Confirm that the line is closed, not just paid down.
Subordination changes lien order only. It does not change the line’s payment or terms. And a prior subordination does not carry over to a later, different first mortgage.
Because the junior lender holds the decision, ask about its subordination policy before you open the line. This matters most if you may refinance the first within a few years. The CFPB’s home equity line booklet also reminds borrowers that a line is secured by the home and generally comes due in full on a sale, so an exit plan belongs in the decision from the start.
What a Broker Sees: Pattern Notes From Files Like This
Across wholesale files, the most common surprise is not credit. It is combined leverage. An investor sees substantial equity on paper, then discovers that a 70% CLTV cap on an investment property leaves little after the first mortgage. The second most common surprise is title. Rentals held in an LLC simply do not fit this product, and the borrower learns it late.
Run both tests early. The strongest files have enough equity and a clean vesting structure before an application is ever submitted. A broker that shops multiple wholesale lenders can match the scenario to the program that fits, which matters when the pool of lenders writing investment-property lines is small.
Key Terms Defined
Junior lien: A claim on a property that ranks below another lien in payment priority.
Subordination agreement: A signed consent in which an existing lienholder agrees to stay in a lower position than a new loan.
Combined loan-to-value (CLTV): All recorded liens divided by the property’s value.
Draw period: The initial years of a line during which you borrow and pay interest only.
Revocable living trust: A trust you can change or cancel, which the program accepts as a title holder.
Who Should Look Elsewhere
Skip the second-lien route if any of these apply:
- The property is titled in an LLC and you do not want to change vesting.
- Your personal debt-to-income is already stretched, since qualification runs on the interest-only payment at the maximum draw.
- Your credit sits below 700 and the property is a rental.
- The property is a manufactured home, log home, or other ineligible type.
- You want mostly undrawn flexibility, given the 75% draw at closing.
Tax treatment varies; consult a qualified tax professional before relying on any deduction.
Frequently Asked Questions
Is a HELOC a second mortgage?
Usually, yes, when a first mortgage already exists. The line is recorded behind the first and called a junior lien. On a paid-off property the same line would take first position, since nothing ranks above it.
Do I need my first lender’s permission for a new line?
Generally not, because a new junior lien does not require the first lender to subordinate. Still, the first mortgage’s own documents can restrict additional liens, so read them. The new lender will also review your first mortgage details during underwriting.
Does adding a line change my first mortgage?
No. You carry two payments, and two liens now secure the property, so a missed payment on either puts the asset at risk.
Can the junior lender refuse to subordinate when I refinance?
Yes. Subordination is a consent, and the junior lender can decline. Your alternatives are paying off and closing the line, or rolling both balances into a single new first mortgage.
Can I put this line on a rental held in an LLC?
Not through this product. Title must sit with the individual borrower or a revocable living trust, so LLC-held rentals are not eligible. A DSCR cash-out refinance, subject to program terms, is the usual alternative.
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 every figure here is subject to lender guidelines and is not a commitment to lend.
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.
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. Nolo – What a Subordination Agreement Means
2. NerdWallet
3. FedLaws – Garn-St. Germain Due-on-Sale Triggers and Exceptions
4. CFPB – What you should know about home equity lines of credit
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: Best DSCR HELOC Program Without Income Verification · Best DSCR HELOC Program on a Rental to Keep Your Low First Mortgage · Best DSCR HELOC Program on a Triplex
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
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.