The Quick Read: Borrowing against a rental you already own can cover a down payment when the equity left after the draw is real, the new rental’s rent covers its own payment, and you can carry the line’s payment and repay it from a refinance, a sale, or cash flow. The line and the purchase loan are two separate approvals. Passing one tells you nothing about the other.
- On this network, an investment-property line tops out at 70% combined loan-to-value (CLTV) and $500,000, with a 700 minimum credit score.
- The purchase lender decides whether borrowed money counts as down payment. The equity line does not decide that.
- A DSCR loan reviews the new property’s rent against its own payment. The line’s payment sits outside that ratio but still has to be paid.
- Short holds and value-add deals fit best. A long hold funded entirely by a floating-rate line fits worst.
Key Terms Defined
Seven terms come up repeatedly, so here they are in plain words.
- HELOC (home equity line of credit): a revolving credit line secured by a property you already own, which you draw on as needed.
- CLTV (combined loan-to-value): all loans secured by the property, added together, divided by its value.
- Draw period: the stretch when you can borrow from the line, usually with interest-only payments.
- DSCR (debt service coverage ratio): monthly rent divided by the property’s monthly debt service, which a DSCR loan uses as its main test.
- PITIA: principal, interest, taxes, insurance, and any association dues, which together make up the monthly payment.
- Seasoning: the time borrowed or deposited money must sit in your account before a lender treats it as settled funds.
- Reserves: liquid cash you hold after closing, usually counted in months of PITIA.
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 an Investment Property HELOC Actually Do?
It turns equity in a property you own into cash you can use as the down payment on the next one. That is all it does. Nothing about it makes the purchase lender accept the cash.
Picture two loans stacked in sequence. The first is the equity line, secured by the property you already own. The second is the purchase loan on the new rental, secured by the new rental. Each lender looks at its own collateral and its own risk.
Lendmire is a broker, so it arranges equity lines through select wholesale partners rather than lending directly. The investment-property parameters on this network are tight, and they shape everything below.
| Feature | Investment-property line |
|---|---|
| Maximum CLTV | 70% |
| Maximum line | $500,000 |
| Minimum credit score | 700 |
| Draw / repayment | 5-year draw, 25-year repayment |
| Title | Individual or revocable living trust |
Credit above 700 buys eligibility, not extra leverage. A 720 score and a 700 score both reach the same 70% ceiling. Every figure is subject to lender guidelines and full file review, and none of it is a commitment to lend.
One more point on structure. At least 75% of the line is drawn at closing. Pricing floats through both the draw and repayment periods and never converts to fixed. You start paying on most of the line on day one, whether or not you have a purchase contract.
How Does Underwriting Treat a HELOC-Funded Down Payment?
Two reviews happen in sequence, and each has its own questions. Here is the order, step by step.
Step 1: The line is underwritten on the source property. The lender looks at your credit, your debt-to-income ratio (DTI), and the equity in the property securing the line. DTI on this network maxes out at 50%, and the lender reviews your file on the interest-only payment calculated on the maximum draw. Lines of $500,000 or less usually run on an automated valuation rather than a full appraisal.
Step 2: You draw the cash and keep the paper trail. Keep the line agreement, the draw record, and the deposit into your account. Lenders ask where large deposits came from. A clean trail answers that question before it is asked.
Step 3: The funds may need to season. Some purchase lenders want borrowed money to sit in your account for a period before they treat it as settled. Others accept a documented draw right away. Seasoning rules vary by lender and program, so ask before you draw, not after.
Step 4: The purchase lender reviews the new loan on the new rent. A DSCR loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. Your personal DTI is not the main test. The lender still reviews your credit, your reserves, and the source of your down payment.
Step 5: The line’s payment still needs a source. The line’s payment generally does not enter the DSCR ratio, but it is still a real obligation. You pay it from another rental’s cash flow, your own income, or savings, and a good file shows where.
Separately from underwriting, keep records of how you used the money. Tax treatment can depend on how the funds are used and how the property is held; borrowers should speak with a qualified tax professional before relying on any deduction.
Will the Purchase Lender Accept Borrowed Down Payment Funds?
It depends on the lender and the program. Across a wholesale network, you see the full range. Some programs accept a documented line draw toward the down payment and closing costs. Others cap the borrowed share or require some of your own money in the deal.
Reserves are a separate test. A program that accepts borrowed funds for the down payment may still exclude them from reserves. Plan to hold your own cash cushion, commonly around six months of PITIA, though reserves vary by lender, leverage, loan size, and transaction type.
Lenders are wary of a fully borrowed down payment for a simple reason. If the line covers the whole down payment, the new property is effectively financed at nearly 100% of its price. Both loans then rest on one rent stream.
For contrast only, Fannie Mae’s guide for conventional loans treats borrowed funds secured by an asset as an acceptable source of down payment. DSCR loans are not agency products. That rule does not govern them, so confirm each DSCR program’s treatment directly.
Pre-approval is not final approval, either. Some applications ask you to attest that no part of the down payment is borrowed. Disclose the plan to the purchase lender before you draw, so the new debt does not surprise the file.
Can You Borrow Against the Rental, or Only Your Home?
You can borrow against either, but the two choices carry different risks. The line on a rental is harder to get. Experian reports that requirements for rental-property lines are stricter than for a primary home, and that lenders in the broader market typically cap loan-to-value at 80%. On this network, the investment-property ceiling is 70% CLTV, with a 700 minimum score.
Availability is also narrower than the DSCR side. Lendmire arranges these equity lines in 16 full-service states, while its DSCR investor programs cover 41 markets, including Washington, D.C.
Borrowing against your primary home reaches higher. Primary-residence lines can reach 90% CLTV, but only at a 720 or better credit profile. The tradeoff is collateral. If your home secures the line, missed payments put your home at risk, not just the rental.
How Much Equity Do You Actually Need?
You need enough for the down payment, the closing costs, and the reserves, and the line has to leave your source property with a cushion. This is where thin deals fail.
Run an illustration in percentages. Say your existing rental already carries a first mortgage equal to 55% of its value. A 70% CLTV ceiling then leaves room for a line equal to 15% of that value. Now look at the purchase side. Most DSCR purchases land at 75% to 80% LTV, which means 20% to 25% down. Select programs reach 85% LTV, or 15% down, at roughly a 700+ score. Leverage, reserves, and pricing vary by lender and program; the final terms follow the full file review.
If the two properties are similar in value, the 15% of room does not cover a 20% down payment. It also does not cover closing costs or reserves. The line would fall short before you even pay the lender’s fees. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
Now flip it. A source property with a first mortgage at 40% of value leaves 30% of value on a 70% CLTV line. That is enough to cover a 20% down payment on a similar-priced rental, with some left for costs. Maximum available equity is not the right amount to draw. Draw what the deal needs. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.
Loan size matters on the DSCR side too. Standard DSCR loans run up to $3,000,000 on standard programs (smaller balances available through select lenders). Credit also matters. A 620 floor exists in parts of the network, most programs want around 660, and 700+ unlocks the strongest leverage tiers.
Does the New Rental Still Work After Both Payments?
It has to pass two tests. The first is the lender’s: does the new rent cover the new payment? Most files are judged on a DSCR ratio of 1.00 or higher. Stronger ratios open better pricing and leverage. A separate select-lender path goes below 1.00, with leverage and terms adjusted. A larger down payment lowers the monthly payment and can lift the ratio. It never erases leverage caps, credit floors, or reserve rules.
The second test is yours, and no lender runs it for you. Clearing 1.00 is not the same as positive cash flow. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities, and capital expenses sit outside the calculation. Then add the equity line’s payment on top.
Here is an illustrative stress run, using modeled assumptions rather than market data. Say the new rental clears about 1.25x on base-case rent. If rent drops 20% for a vacancy stretch or a soft lease renewal, that same property falls to roughly 1.00x. The equity line’s payment keeps coming due either way. If the line is floating and the market moves against you, the pressure builds from both sides.
Payment shock is real. Bankrate explains that the payment can jump sharply when a line moves from its draw period to repayment, and that some lines carry balloon payments. On this network’s investment line, the draw is interest-only for five years before a 25-year repayment starts. The jump is built in, so plan for it.
Where Does This Strategy Work, and Where Does It Break?
The rule of thumb: the shorter your planned use of the line, the better the fit. Here is a decision table.
| Makes sense when | Pause when | Skip when |
|---|---|---|
| You have a named payoff source | The source property’s equity is thin | The line would fund the entire down payment |
| The deal is a short hold or value-add | The purchase lender has not confirmed treatment | You have no cushion for reserves |
| Another rental’s cash flow carries the line | Your DTI is close to 50% | The rental can’t hold up under a vacancy stress |
| Cash left after closing covers reserves | The credit score sits under 700 | Your only plan is hoping rents rise |
A named payoff source is the single best test. It means a specific event repays the line: a refinance, a sale, or saved cash. Nasdaq notes that a draw period usually lasts five to ten years and repayment often runs ten to twenty, so the line can outlast a short plan. Interest-only payments during the draw make the line feel cheap. That feeling is the danger, because the balance never shrinks.
Many investors use the line as a bridge. They buy, improve the property, and then refinance. On a standard-rental cash-out refinance, most of the network tops out around 75% LTV, and about six months of seasoning is the common expectation. On short-term-rental collateral, cash-out is capped at 70%. Those limits shape how much a refinance can repay. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
If you own the source rental through an entity, check title before anything else. Lines on this network require the individual borrower or a revocable living trust to hold title. 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 lender program eligibility for the LLC-titled loan.
More edge cases:
- Exposure limits. A borrower can hold at most three lines, and an investor who owns more than 15 financed properties is not eligible.
- Listed properties. In some states, a property listed for sale, or listed within the past 60 days, is ineligible.
- Property types. The line covers single-family, 2-4 units, PUDs, townhomes, and condos, including non-warrantable condos. Manufactured homes, co-ops, condotels, log homes, and commercial or mixed-use properties are not offered. On the DSCR side, manufactured homes, log homes, and barndominiums are likewise not offered.
- Credit events. A bankruptcy needs four years of seasoning from discharge or dismissal. Investment files with foreclosure history follow a seven-year path, or four years for a deed-in-lieu, pre-foreclosure, or short sale.
HELOC, Cash-Out Refinance, or Savings: Which Fits?
Each route suits a different situation. This table compares the structural differences.
| Option | Strength | Tradeoff |
|---|---|---|
| Investment HELOC | Keeps your first mortgage in place | Floating payment, 70% CLTV cap |
| Cash-out refinance | One loan, a defined term | Replaces your existing loan |
| Savings | No new debt | Slower, and ties up your cash |
A cash-out refinance on a standard rental reaches about 75% LTV, while short-term-rental collateral stops at 70%. It replaces your current loan, which is a cost if your existing loan terms are favorable. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.
Savings is the cleanest route. It is also the slowest, and spending it can leave you short on reserves. Many investors blend the sources: some savings, a documented draw, and a rental that covers itself.
For program comparisons, Lendmire’s guide to the best investment property HELOC programs for a down payment goes deeper on the product side. The complete DSCR loans guide covers the purchase-loan side, including coverage ratios, leverage, and reserves.
A Go or No-Go Check Before You Draw
Run these questions in order. A “no” on any of them is a reason to pause.
1. Has the purchase lender confirmed that a documented line draw counts toward the down payment?
2. Does the source property keep a cushion after the line, within the 70% CLTV ceiling?
3. Does the new rental clear its own coverage test on rent alone?
4. Does it still hold up if rent drops 20%?
5. Can you pay the line from sources other than the new rental?
6. Do you hold reserves that do not depend on the borrowed funds?
7. Do you have a named payoff source and a date by which you expect it?
8. Does the line’s draw-to-repayment shift still work in your plan?
The sequence matters too. Apply for the line before you go under contract, because an equity line is not something you want to chase mid-deal. Confirm the purchase lender’s rules first. Then draw, document, and season as that lender requires.
Frequently Asked Questions
Can an equity line be the whole down payment?
Sometimes, but many lenders limit it. A fully borrowed down payment leaves the new property financed at nearly 100% of its price. Programs differ on the borrowed share they accept, so ask the purchase lender what portion of your own funds it wants to see.
Does the line’s payment count against my DSCR?
Generally no. The DSCR ratio compares the new rental’s rent to its own PITIA. The line’s payment is a separate obligation, and you still have to pay it from other income or cash flow.
Can an LLC borrow on the line?
No. Title must sit with the individual borrower or a revocable living trust on this network. A rental already deeded to an LLC needs a vesting change, or a DSCR cash-out instead.
Do I need an appraisal?
Usually not on an investment line. The $500,000 maximum puts investment lines in the automated-valuation lane, and full appraisals begin only above $500,000. A borrower can still request one.
What if I’d rather avoid a floating payment?
Look at other routes. A cash-out refinance on the source property gives a defined term, and savings avoids new debt entirely. Investment lines on this network never convert to a fixed payment, so a fixed structure means a different product.
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. Any calculator on this page gives an illustrative estimate only.
Start from the exit and work backward. Name the payoff first, then size the draw.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage broker. Home equity lines of credit — on a primary residence, a second home or an investment property — are arranged through wholesale lenders in Lendmire’s 16 full-service states, and every line is underwritten by the lender under its program 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. Fannie Mae Selling Guide, B3-4.3-15
2. Experian
3. Bankrate: HELOC pros and cons
4. Nasdaq: Pros and cons of a home equity line of credit
This article is part of Lendmire’s investment property HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Banks That Offer an Investment Property HELOC Without a Home Appraisal · Top Investment Property HELOC Providers to Fund New Construction · Banks That Offer an Investment Property HELOC With Interest-Only Payment Options
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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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.