The Quick Read: The right program is the one whose lien position, combined leverage ceiling, credit tier, occupancy rules and ownership requirements match your property. A line behind your first mortgage leaves that loan untouched, but it is sized by every lien on the property, not just the first. Lendmire is a mortgage broker, not a lender. It places these files with select wholesale lenders, and every figure below is subject to lender guidelines and full file review.
- A line behind your first mortgage is sized by combined loan-to-value (CLTV), which counts every loan on the property.
- Leverage depends on occupancy. An investment-property line tops out at 70% CLTV, while a primary-residence line can reach 90% CLTV at a 720-or-better credit profile.
- This product is reviewed against personal debt-to-income ratio. It does not qualify the rental on its rent.
- Title must sit with you personally or in a revocable living trust. An LLC cannot hold title on this product.
- If the first mortgage is not worth keeping, or the deed sits in an LLC, a DSCR cash-out refinance is usually the better tool.
What Does “Behind the First Mortgage” Actually Mean?
It means second lien position. Your first mortgage stays exactly as it is, and the new line is recorded behind it. If the property is ever sold or foreclosed, the first lender is paid first and the line is paid from what remains.
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.
That ranking is why these lines carry tighter leverage than a first-lien loan. The lender takes more risk, so it asks for more equity cushion and stronger credit.
A home equity line of credit is an open-end loan, meaning you can borrow, repay and borrow again. The CFPB’s HELOC guide describes a draw period when you borrow, followed by a repayment period. It also warns that if you cannot repay on schedule, you could lose the property.
Many big banks and large retail lenders decline lines on non-owner-occupied rentals, especially when a mortgage already exists. So the “best” program is mostly a matching exercise. Across a wholesale network, a broker can see which programs actually write second-lien lines on a given property and borrower.
Key Terms Defined
Second lien: A loan recorded behind your first mortgage. It is repaid second if the property is sold or foreclosed.
CLTV (combined loan-to-value): Every loan secured by the property, added together, divided by the property’s value. Plain LTV counts only the first mortgage.
Draw period: The stretch when you can borrow from the line, usually paying interest only.
Repayment period: The stretch after the draw period when the balance amortizes, meaning each payment includes principal.
DTI (debt-to-income ratio): Your monthly debt payments divided by your monthly income.
DSCR (debt service coverage ratio): Monthly rent divided by the property’s monthly payment, including principal, interest, taxes, insurance and any HOA dues.
How Is the Line Sized? The CLTV Math
Sizing is simple arithmetic. Start with the CLTV ceiling that applies to your occupancy and credit tier. Subtract what you already owe, as a share of value. What remains is your room.
Here is the walk-through in percentages:
1. Find the property’s value through the lender’s valuation.
2. Add the first mortgage balance, any older second lien and any other recorded liens.
3. Divide that total by value. That is your current CLTV.
4. Subtract it from the ceiling. The gap, applied to value, is the most the line can be.
5. Check the result against the program’s minimum and maximum line size.
Take an investment property with a first mortgage equal to 50% of value. The ceiling on an investment-property line is 70% CLTV, so the room is about 20% of value. Now take a property whose first mortgage is 68% of value. Room is about 2% of value, which is likely too small to fit the program’s $25,000 minimum line on most properties.
A low first-mortgage balance creates room. The first mortgage’s interest rate does not. Only its balance counts toward the combined position.
The CFPB’s HELOC booklet illustrates the same logic. Credit limits are set as a percentage of appraised value, minus the mortgage balance. No lender lets you borrow your full equity.
What Ceilings Apply by Occupancy?
Occupancy changes everything. Never read a single leverage number without asking which kind of property it belongs to.
Lendmire brokers this product through two wholesale programs. The higher-leverage program reaches the top CLTV tiers. The longer-runway program has a five-year draw option and stricter tradeline standards. Each figure below applies within its own program’s terms, and it is subject to lender guidelines.
| Occupancy | Minimum credit | Top CLTV tier | Maximum line |
|---|---|---|---|
| Primary residence | 600 | 90% at 720+ | $500,000 at 90% CLTV; $750,000 at 75% CLTV, 700+ (720 on the longer-runway program) |
| Second home | 640 | 90% at 720+ | $500,000 |
| Investment property | 700 | 70% | $500,000 |
On a primary residence, leverage steps down with credit. A 640 profile reaches 80% CLTV, a 620 profile reaches 70%, and a 600 profile reaches 60%. On a second home, a 640 profile reaches 75% CLTV.
On an investment property, 70% CLTV is the ceiling at both the 700 and the 720-plus tiers. No higher tier exists. A line above $500,000 is primary-residence only. It requires a credit profile of 700 or better (720 on the longer-runway program), caps at 75% CLTV and requires a full appraisal.
Market-wide, many equity-line lenders advertise CLTV caps around 80% on owner-occupied homes. That figure describes the broader market, not an investment-property line on this network, where the ceiling is 70% CLTV.
How Does Underwriting Treat This Line, Step by Step?
Think of it as a homeowner-style review applied to a rental. The lender checks six things in this order.
1. Valuation. Lines at or below $500,000 ordinarily use an automated valuation instead of a traditional appraisal. A higher CLTV may trigger a secondary valuation. Every line above $500,000 needs a full appraisal, and you can request one at any size.
2. Credit. The floor is 600 on a primary residence, and the investment floor is 700. The lender pulls a single-bureau score keyed to the primary wage earner. The report must be no more than 90 days old at closing, and rescores are not available. The longer-runway program also wants two tradelines seasoned 12 months, or one seasoned 24.
3. Housing history. On the longer-runway program, history is checked across all financed properties. A 640-plus profile can show 0x30 in the last six months and no more than 1×30 in twelve. A 600 to 639 profile needs 0x30 in twelve.
4. DTI. The maximum is 50%. It drops to 45% for credit profiles from 600 to 679, and a ratio above 45% needs a 680 minimum. The lender reviews your file on the interest-only payment calculated on the maximum draw.
5. Property type. Single-family homes, 2-4 units, PUDs, townhomes and condominiums, including non-warrantable condos, are eligible. Modular homes are eligible on the longer-runway program only. A 2-4 unit property needs a 640 minimum on that program.
6. Title and exposure. You hold title personally or in a revocable living trust. You are limited to three lines, and you cannot own more than 15 financed properties.
Notice what is missing. The rent does not qualify the loan. Your personal income and debts do. That is the biggest difference from a DSCR loan, and it is the reason many portfolio investors hit a wall at the DTI step.
What Structures Exist?
The product is a standalone line in either first or second lien position. Choosing second position is deliberate, because a first-position line could pay off the existing mortgage. Behind a first mortgage you want to keep, second position is the point.
Primary residences and second homes have two draw structures. One is a three-year interest-only draw with a 17-year repayment period. The other is a five-year interest-only draw with a 25-year repayment period. Investment lines run only the five-year draw and 25-year repayment structure.
Three structural facts surprise people:
- At least 75% of the line is drawn at closing. This is not a dry-powder line you open and leave empty.
- Pricing floats through both the draw and repayment periods and never converts to a fixed amount.
- Subsequent draws after closing carry a $1,000 minimum, as stated by the longer-runway program.
The line size runs from $25,000 to $750,000, though a line above $500,000 is primary-residence only. Availability is also narrower than Lendmire’s DSCR footprint. This product is offered in only 16 full-service states.
Where Does the General Rule Break?
Several situations change the answer.
The rental is deeded to an LLC. This is the sharpest edge. LLCs, corporations, partnerships and irrevocable, blind or land trusts cannot hold title on this product. A property already in an LLC needs a vesting change or a different structure, such as a DSCR cash-out. Moving a deed has consequences for your existing first mortgage and title policy, so check with your lender and an attorney before you change anything.
The property type is not offered. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use and agriculturally zoned property are not offered on this product.
You already have a second lien. An older second or existing line counts in CLTV and eats your room. Combined exposure also caps at $2,000,000 on the higher-leverage program and $750,000 on the longer-runway program.
Credit history has dings. A bankruptcy needs four years of seasoning from discharge or dismissal on both programs. Foreclosure history splits. One program seasons a foreclosure at seven years and a deed-in-lieu, pre-foreclosure or short sale at four. The other declines that history regardless of age. Sub-640 profiles are limited to single-family residences with a clean 12-month housing history under the longer-runway program, and that restriction reaches primary residences only.
A converted home carries consumer terms. If a former primary residence became a rental, read your existing loan documents. Some consumer lines restrict renting the property. Applying as an owner-occupant when you plan to rent is a misrepresentation risk, so don’t do it.
Lines can change. Lenders can reduce or freeze a line if the property’s value falls. Selling the property generally requires paying the line off in full. Don’t plan an exit around an undrawn balance.
The property was recently listed for sale. In several states, a property listed for sale, or listed within the past 60 days, is ineligible.
When Is a DSCR Cash-Out the Better Tool?
Often, when the rental itself should carry the financing. 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. The loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines.
Compare the two paths side by side:
| Factor | Second-lien HELOC | DSCR cash-out |
|---|---|---|
| First mortgage | Stays in place | Replaced |
| Reviewed on | Your DTI | Rent vs. payment |
| Investment leverage | 70% CLTV max | Around 75% LTV |
| Title | You or revocable trust | LLC possible* |
| Maximum size | $500,000 | Up to $3,000,000 |
*Subject to program terms.
The DSCR side works like this across most programs in the network. Cash-out tops out around 75% LTV on a standard rental, and about six months of seasoning is the common expectation. A 1.00 coverage ratio is where select programs start, and stronger ratios open better pricing and leverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Credit floors run as low as 620 in parts of the network, most programs want around 660, and 700-plus unlocks the strongest tiers. Standard loan sizes run up to $3,000,000 on standard programs (smaller balances available through select lenders).
One caution. Clearing 1.00 does not mean positive cash flow. DSCR compares rent to the monthly payment only. Repairs, vacancy, management and capital expenses sit outside the calculation.
The trade-off is plain. A DSCR cash-out replaces your first mortgage. If that loan is the reason the property cash flows, replacing it may cost more than the equity is worth. Lendmire’s piece DSCR HELOC vs Cash-Out Refinance for Borrowing Behind the First Mortgage You Already Have walks through that decision. If your first mortgage is itself a DSCR loan, the article on the best DSCR HELOC program behind a DSCR first mortgage covers that setup. For the full picture of how these loans work, see the complete DSCR loans guide.
Which Situation Fits Which Structure?
| Your situation | Likely fit |
|---|---|
| Rental in your name, low first balance, 700+ credit | Second-lien line |
| Rental in an LLC | DSCR cash-out |
| High first balance, little equity room | Neither yet |
| Strong income, many properties | Check DTI first |
| First mortgage not worth keeping | DSCR cash-out |
Say you own a rental personally, owe roughly half its value, and have a 740 score. A line behind the first mortgage keeps your existing loan intact and adds a second payment. Run the DTI math first.
Now picture an investor with several financed rentals held in LLCs. The line can’t take title in an LLC, and portfolio debt strains DTI. A DSCR cash-out is the more natural fit.
The honest toss-up sits in the middle. An investor with a low-balance first mortgage, personal title and moderate DTI may find both work. The line preserves the first loan, but the cash-out can offer more size and does not depend on DTI. Weigh what the first mortgage is worth to you before deciding.
Checklist Before You Apply
- Confirm how the deed is vested and whether a change is needed.
- Total every lien on the property and compute CLTV.
- Pull your credit and check your tradelines and housing history.
- Add up all monthly debts across your portfolio for the DTI test.
- Read your first mortgage documents for any restriction on junior liens.
- Confirm the property type is eligible.
- Decide how much you will draw at closing, since at least 75% of the line is drawn then.
Frequently Asked Questions
Does a HELOC replace my first mortgage?
No. A line in second position sits behind the first mortgage and leaves its balance, term and payment unchanged. You pay both. Only a first-position line or a cash-out refinance can pay the existing mortgage off.
Can an LLC-owned rental get this kind of line?
Not on this product. Title must sit with you personally or in a revocable living trust. A property already deeded to an LLC needs a vesting change or a DSCR cash-out instead, subject to program terms.
What credit score do I need on a rental?
An investment-property line has a 700 minimum, and the 70% CLTV ceiling applies at 700 and above. A primary residence can start at 600, with leverage rising as the score rises. All figures are subject to lender guidelines.
Does an existing second lien matter?
Yes. CLTV counts every recorded lien, so an older second or existing line reduces your room dollar for dollar. It also counts toward the three-line limit and the combined exposure caps.
Is this the same as a DSCR line?
No. This product is reviewed against personal debt-to-income ratio. A DSCR loan is reviewed for the property on rent against its payment. The names get blurred in the market, but the underwriting is different.
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. You can reach the team at 828-256-2183. The best program for your situation depends on those inputs, and a broker who shops multiple wholesale lenders can match the file to the right one.
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
2. CFPB – What You Should Know About Home Equity Lines of Credit (booklet)
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 HELOC Program With a Mortgage That Is Not yet Paid Off · Best Investment Property HELOC Program on a Fourplex for a First-Time Landlord · Best HELOC Program to Buy a Second Home
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
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- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
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.