The Quick Read: A home equity line placed behind a low first mortgage leaves the first loan untouched. On the investment lines in Lendmire’s wholesale network, it is underwritten on the owner’s credit, income and debt ratio rather than on rent, with combined leverage capped at 70% CLTV on an investment property. The first mortgage’s low pricing never enters the math. Only its balance does.
- Combined leverage on an investment property tops out at 70% CLTV, and a 700 credit score is the hard floor.
- Lines run from $25,000 to $500,000, with a 5-year interest-only draw and a 25-year amortizing repayment.
- Title must sit with an individual or a revocable living trust. An LLC cannot hold title on the line.
- Debt-to-income is capped at 50% and tested on the interest-only payment at the full line amount.
- Lines in this network are available only in 16 states, which is narrower than the 41-market DSCR footprint. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
Every figure here is subject to lender guidelines and full file review. This is not a commitment to lend.
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 Is a Second-Lien HELOC on a Rental, and Why Keep the First?
A home equity line of credit (HELOC) is an open-end credit line secured by the property. A second lien means it sits behind the existing first mortgage in repayment priority. The first loan keeps its balance, its term and its pricing. The new line adds a second payment on top.
Investors do this when the first mortgage is cheap and a cash-out refinance would replace it. A cash-out pays off the old loan and writes a new one, so the old terms are gone. The line leaves the old terms alone and adds only the amount needed.
There is a trade-off. The line adds personal debt and is underwritten on the borrower. NerdWallet notes that HELOCs on investment properties are harder to get than on a primary home. Lenders see higher default risk, fewer lenders offer them, and requirements vary by lender.
Across the wholesale network, the line can be placed in first or second position. The first-lien version is a separate question.
How Does Underwriting Treat the Line, Step by Step?
Underwriting a second-lien line on a rental follows a set order. Each step can stop the file, so the order matters.
1. Pull the first-mortgage balance and value the property. On lines of $500,000 or less, an automated valuation model usually sets the value. A full appraisal is required only above $500,000, and an investment line cannot go above that. A borrower may still request a full appraisal. A higher CLTV can also call for a second valuation.
2. Compute combined loan-to-value (CLTV). Add the first-mortgage balance to the full line limit. Divide by property value. Compare the result to the 70% ceiling on an investment property. While a line is in its draw period, lenders count the full limit, not the drawn balance.
3. Size the line. The line is the smaller of two numbers: 70% of value minus existing liens, or the $500,000 program maximum. The floor is $25,000.
4. Qualify the borrower, not the rent. Credit, income and debt ratio decide the file. Rent coverage is not tested. That is the biggest difference from a DSCR loan.
5. Test DTI at the full line. The 50% maximum is calculated on the interest-only payment at the maximum draw. A line drawn lightly still gets tested as if it were fully drawn.
6. Check title, property type and exposure. The next sections cover those.
7. Close with at least 75% of the line drawn. This is not a fully idle revolving line. Pricing floats through the draw and repayment periods and never converts to fixed.
What Are the Requirements at a Glance?
The table lists the investment-property requirements in Lendmire’s wholesale network. Primary-residence and second-home lines follow different, more generous tables, so none of these figures carry over to those.
| Factor | Investment property line |
|---|---|
| Max combined leverage | 70% CLTV |
| Minimum credit score | 700 (720 gives no added leverage) |
| Line size | $25,000 to $500,000 |
| Structure | 5-year interest-only draw, 25-year repayment |
| DTI | 50% max, tested at full line |
| Title | Individual or revocable living trust |
| Valuation | Automated model; appraisal above $500,000 |
| Credit report age | 90 days or less at closing |
| Financed properties | Not eligible past 15 |
Credit above 700 buys no extra leverage on an investment line. A 720 profile and a 700 profile reach the same 70% ceiling. The score is an eligibility gate, not a leverage dial. Scores come from a single-bureau model keyed to the primary wage earner. Reports allow no rescores.
Eligible property types are single-family, 2-4 units, PUDs, townhomes and condominiums, including non-warrantable condos. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use and agricultural-zoned property are not offered.
A borrower is limited to three lines in total. A bankruptcy needs 4 years of seasoning from discharge or dismissal. On investment files, a foreclosure is seasoned 7 years. A deed-in-lieu, pre-foreclosure or short sale is seasoned 4 years.
These lines are offered only in AL, CA, CO, FL, GA, IN, MI, MT, NM, NC, OH, PA, TN, TX, VA and WA. A property listed for sale, or listed within the past 60 days, is ineligible in NC, PA, TN, TX and WA.
How Do You Work Out the Headroom?
Headroom is the room left under the CLTV ceiling after the first mortgage. The low first-mortgage pricing does not enter the formula. Only the balance does.
Run it on a modeled rental, with every input stated as a percentage of value.
- Property value: 100%.
- First mortgage balance: 40% of value.
- CLTV ceiling on an investment property: 70%.
- Headroom: 70% minus 40%, or 30% of value.
The line can be at most 30% of value, and never above the $500,000 cap. Now add an existing second lien at 10% of value. The headroom drops to 20%. The same property supports a smaller line because the ceiling counts every lien.
Now test a heavier first mortgage at 60% of value. The headroom is 10% of value. On many properties that falls under the $25,000 line floor, and the file stops before it starts.
Count the full line limit in the CLTV math, even if the plan is to draw only part of it. Investors who size the line on the planned draw can find the file over the ceiling once the full limit is counted.
What the Low Rate Does and Doesn’t Do
The first mortgage’s low pricing is the reason to keep it. It does not help the line qualify. Underwriting reads the first loan for its balance and its monthly obligation. The balance feeds CLTV. The payment feeds the borrower’s debt ratio.
A cheap first loan can help in one way. A small payment on the first lien leaves more room under the 50% debt ceiling. That lowers the DTI contribution, not the CLTV contribution.
The line also does not change the first loan’s DSCR. A line qualified on the borrower leaves the first loan’s rent-to-payment relationship alone. Property cash flow is still thinner after the second payment starts.
Check the first mortgage’s own paperwork before applying. The note and deed of trust may restrict additional liens. Read them, or ask the servicer, before the file is submitted.
What Variations Exist?
There are three structural choices. Only the third is a choice on an investment property.
- Lien position. The network places the line in first or second position. Behind a low first, it is second.
- Draw structure. Primary residences and second homes have two draw-and-repayment structures. Investment lines run one structure only: a 5-year interest-only draw and a 25-year amortizing repayment.
- Title vehicle. Title can be held in the individual’s name or in a revocable living trust. Both are accepted. Irrevocable, blind and land trusts are not.
The CFPB’s HELOC overview explains that a draw period is followed by a repayment period. It describes variable pricing and says payments can rise sharply when repayment begins. In some cases the whole balance can come due. The CFPB’s HELOC booklet also covers interest-only options during the draw. The 25-year amortizing repayment on the network’s investment lines is built to avoid a balloon, but the payment step-up at the end of the draw still applies.
Because pricing floats, the payment can move during both phases. A rental plan should hold up if the payment rises.
Where the General Rule Breaks
The 70% CLTV rule and the 700 floor are firm. The edge cases below are where files stop or change shape.
LLC-held rentals. An LLC cannot hold title on the line. A property already deeded to an LLC needs a vesting change, or a different product. A DSCR cash-out is the usual alternative. LLC-titled DSCR loans are available subject to lender program eligibility.
Scores under 700. The line is unavailable on an investment property. DSCR programs reach lower: a 620 floor exists in parts of the network, and most programs want around 660.
DTI above 50%. The line fails on the borrower’s debt, no matter how strong the rent is. The investor needs a product that tests the property’s income instead.
Needs above $500,000. An investment line cannot exceed $500,000. Larger lines exist only on primary residences, with a full appraisal and different credit terms.
Owner use. If the owner lives in or uses the property personally, it may not be classed as a rental. Rental income on a tax return or a management agreement can lead a lender to classify it as investment. Occupancy is a file-level question.
Short-term rentals. NerdWallet notes that some lenders restrict by location or by year-round renting. Short-term rental rules can vary by city, county, HOA and property type. Investors should confirm local rules before relying on projected rental income.
Divorce. A pending case can restrict new liens, depending on the state. A joint line stays joint until it is paid off, closed or refinanced.
Listed for sale. The 60-day lookback applies in five of the 16 states, as noted above. A property that was recently listed and pulled can still be ineligible.
Portfolio size. A borrower with more than 15 financed properties is not eligible.
HELOC or DSCR Cash-Out: Which Fits?
The choice comes down to a few differences. The table compares the network’s investment line with a DSCR cash-out refinance.
| Factor | Second-lien HELOC | DSCR cash-out |
|---|---|---|
| Reviewed on | Borrower credit, income, DTI | Property rent vs. payment |
| First mortgage | Stays in place | Paid off and replaced |
| Leverage | 70% CLTV, investment property | About 75% LTV, standard rentals |
| Credit | 700 minimum | 620 floor in parts; ~660 typical |
| Title | Individual or revocable trust | LLC allowed, subject to program terms |
| Size | $25,000 to $500,000 | Up to $3,000,000 on standard programs |
| Seasoning | None stated | About 6 months typical |
A DSCR loan is a business-purpose loan designed for non-owner-occupied investment property. Lendmire’s complete DSCR loans guide covers the full program. In short, it qualifies primarily on property-level rental income covering the payment, subject to lender guidelines.
DSCR floors vary by program. A 1.00 ratio is where many 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. Reserves on DSCR files commonly run around 6 months of PITIA, though they vary by lender, leverage and loan size. Clearing 1.00 is also not the same as positive cash flow. Repairs, vacancy, management and capex sit outside the ratio.
The HELOC tends to fit when the first mortgage is worth keeping, the cash need is moderate, the property is held personally and the borrower’s credit and debt ratio are strong. The DSCR cash-out fits when the property sits in an LLC, the borrower’s DTI is high, the credit score is under 700 or the cash need is large.
The HELOC is the wrong tool in these cases:
- The property is in an LLC and the owner wants to keep it there.
- Personal debt is already near the 50% ceiling.
- The cash need is more than the headroom allows.
- The rent covers a new loan comfortably but the borrower’s income does not support a second payment.
A cash-out can release more cash than the line when the first lien is very low. The extra leverage is 75% LTV versus 70% CLTV on standard rentals. The trade is that the low first mortgage goes away. Lendmire’s piece How to Qualify for an Investment Property HELOC When Keeping a Low First Mortgage covers the qualification side in more detail. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.
What Are the Risks of Keeping the First and Adding a Line?
The risks are structural, and they are worth listing plainly.
- Payment movement. Pricing floats and never converts to fixed. The payment can change in the draw and in repayment.
- Payment step-up. The interest-only draw ends after 5 years. The payment then rises as the loan amortizes over 25 years.
- Foreclosure exposure. The line is secured by the same property as the first mortgage. Missing either payment puts the property at risk.
- Personal liability. The line is underwritten on the borrower and adds to personal debt, which can affect the next purchase.
- Later refinance. A second lien must be paid off or subordinated when the first mortgage is refinanced.
- Thin cash flow. Rent still has to cover two payments, plus repairs, vacancy and management.
What Should You Gather Before Applying?
- A recent first-mortgage statement showing balance and payment.
- Proof of title and how it is vested, whether personal or a revocable trust, with trust documents if applicable.
- Income and debt documentation for the borrower.
- A credit report no older than 90 days at closing.
- A property valuation, if the borrower wants a full appraisal.
- Any existing second lien or other liens on the property.
- A review of the first mortgage’s terms on additional liens.
Key Terms Defined
HELOC: An open-end credit line secured by the property that can be drawn on, repaid and drawn again during the draw period.
Second lien: A loan recorded behind the first mortgage, which has priority if the property is sold or foreclosed.
CLTV: Combined loan-to-value, which is all lien balances, with the full line limit during the draw, divided by property value.
Headroom: The room left under the CLTV ceiling after existing liens, which sets the largest line available.
DSCR: Debt service coverage ratio, which compares a property’s rent to its full monthly obligation of principal, interest, taxes, insurance and any HOA dues.
Draw period: The stretch when the line is open for borrowing, which is 5 years of interest-only payments on the network’s investment lines.
Revocable living trust: A trust the owner can change or end, which is accepted as the title holder on these lines.
Frequently Asked Questions
Does the low rate on my first mortgage help me qualify for the line?
No. Only the first mortgage’s balance and monthly payment enter the file. The balance feeds the CLTV calculation and the payment feeds the debt ratio. A small first-lien payment can leave more room under the 50% DTI limit, but the pricing itself is not scored.
Can my LLC hold title and still get the line?
Not on this product. Title must be held by an individual or a revocable living trust. An LLC, corporation, partnership or irrevocable, blind or land trust cannot hold title. A property already deeded to an LLC needs a vesting change, or a DSCR cash-out instead, subject to program terms.
What credit score does the line need on a rental?
A 700 score is the hard floor on an investment property, and no tier sits beneath it. A 720 score reaches the same 70% CLTV ceiling, so a higher score adds no leverage on an investment line. Lenders pull a single-bureau score keyed to the primary wage earner, and the report must be 90 days old or less at closing.
Will the line need a full appraisal?
Usually not. An investment line caps at $500,000, and full appraisals are required only above that size. An automated valuation model typically sets the value. A higher CLTV may call for a second valuation, and a borrower may request a full appraisal in any case.
How much of the line has to be drawn at closing?
At least 75% of the line is drawn at closing. That differs from a typical revolving consumer line. A borrower who wants only a small amount available should size the line to the need, not to the maximum headroom.
Is the line the same as a DSCR loan?
No. A DSCR loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. The HELOC is reviewed on the borrower’s credit, income and debt ratio. The two answer different problems, and some files use one after the other.
Next Steps
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 brokers these loans through select lenders in its wholesale network and is not the lender. The site’s illustrative calculator can give a rough sense of scale before a file is built. For DSCR cash-out and purchase financing, Lendmire arranges loans.
Headroom is arithmetic, and the low first mortgage only decides how much of that headroom is left.
About Lendmire
As a mortgage broker (NMLS# 2371349), Lendmire helps homeowners and real estate investors in its 16 full-service states open home equity lines of credit arranged through wholesale lenders. Lendmire is never the lender; line amounts, ceilings and terms are set by the lender under its 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
1. NerdWallet – HELOC on an investment property
2. CFPB: What Is a Home Equity Line of Credit 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: How to Qualify for an Investment Property HELOC on Their Rental · Can You Get an Investment Property HELOC After Refinancing Into a Very Low Mortgage?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
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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.