How an Investment Property HELOC Works for a Vacation Home Down Payment

The Quick Read: An investment property HELOC is a revolving line secured by a rental you own, and its draw becomes the down payment on a separate vacation-home loan. It only works if the purchase lender accepts documented borrowed funds, the line sits at or under the network’s 70% combined loan-to-value ceiling for investment property, and the new property’s numbers hold up.

• The line supplies cash only. A second loan buys the vacation home.
• On an investment property, the network ceiling is 70% combined loan-to-value (CLTV), with a 700 minimum credit score and a $500,000 maximum line, subject to lender guidelines.
• Borrowed funds are commonly accepted for the down payment and closing costs, and commonly excluded from reserves.
• The vacation home’s classification (second home or investment property) decides how the purchase loan is underwritten.

What Is an Investment Property HELOC?

It is a home equity line of credit secured by a rental property instead of your residence. You borrow against the equity, which is the property’s value minus what you owe on its mortgage. You can draw, repay and draw again during the draw period. After that, the line moves into a repayment period.

Two versions of this strategy exist. One line is secured by your primary residence. The other is secured by an existing rental. The rental version puts only that rental at risk. It is also harder to get, because lenders treat investment collateral as riskier. White Coat Investor makes the same point about investment-property lines.

Market-wide, surveys of lenders report credit-score expectations of 720 or higher on investment-property lines, with at least 20% equity left after a full draw. Across Lendmire’s wholesale network, the investment-property line works differently. It has two credit tiers, 720 and 700, and both reach the same 70% CLTV. A score above 700 therefore adds no extra leverage. Seven hundred is a hard floor with no tier beneath it.

How Underwriting Treats It, Step by Step

The process runs in a fixed order. Each step depends on the one before it.

1. Open the line first. It must close and be drawn before you go under contract on the vacation home. Underwriters see the draw, so avoid other large credit changes in the meantime.

2. Size the line. The credit limit comes from a percentage of the property’s value, minus the mortgage balance. On this network, an investment line runs $25,000 to $500,000 and caps at 70% CLTV.

3. Value the collateral. Full appraisals are required only on lines above $500,000, and those lines are limited to primary residences. An investment line therefore sits in the automated-valuation lane. A traditional appraisal is commonly not required, though a borrower can request one.

4. Draw and move the cash. The program requires at least 75% of the line to be drawn at closing, and you can draw again later within the draw period. Many files then have you move the funds into your own account. The purchase lender wants a clear paper trail from the line statement to the deposit.

5. Choose the purchase loan. This is where the vacation home’s classification matters. The next sections cover it.

6. Bucket the funds. Lenders treat the down payment, closing costs and reserves as three separate pots. Borrowed funds are commonly accepted for the first two and commonly excluded from reserves. Reserves vary by lender, leverage and loan size, and are commonly around six months of the monthly housing obligation.

On the line itself, a lender checks a 50% maximum debt-to-income ratio. It is reviewed around the interest-only payment calculated on the maximum draw, not on what you actually borrowed. A borrower may hold up to three lines, and anyone with more than 15 financed properties is not eligible.

Two Collateral Choices Side by Side

The right line depends on what you can pledge and what you can afford to put at risk.

Two details sit behind the table. A line above $500,000 is for primary residences only, requires a full appraisal and caps at 75% CLTV. And a primary-home line carries leverage the rental line cannot match, but default puts your home on the line. Yahoo Finance notes that foreclosure risk falls on the home securing the line.

Neither line has a fixed price. Pricing floats through the draw and the repayment period and never converts to fixed. The CFPB’s HELOC overview warns that payments can change month to month and are often significantly higher once repayment starts. Some borrowers may owe the whole balance at that point. A line sized on today’s budget needs a stress test against the end of the draw period.

What Does “Vacation Home” Mean to a Lender?

The label changes the loan. It can mean three different things, and the purchase lender needs the occupancy stated accurately.

Second home. This is a personal-use property. The loan is underwritten on your income and debts, and projected rental income does not help you qualify. The new line’s payment lands in your debt-to-income ratio, which is why high-DTI borrowers often look elsewhere.

Investment property or vacation rental. This usually points to a DSCR loan. These are business-purpose investor loans, 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, so the line payment is not part of the debt-to-income math. Many files use a coverage floor of 1.00 on select programs, and higher ratios open better pricing and leverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted.

A second home that is really a rental. Mislabeling is the danger zone. Do not use an investment product for planned personal occupancy, and do not call a full-time rental a second home. Occupancy must match how you will actually use the property.

For short-term-rental purchases, programs commonly cap at 75% LTV and expect a 640+ score with a 1.00 coverage floor. They look for about 12 months of hosting history or a market-data projection. Short-term rental rules can vary by city, county, HOA, and property type, so investors should confirm local rules before relying on projected rental income. The complete DSCR loans guide explains how these purchase tiers fit together, and standard purchases generally land at 75% to 80% LTV.

Where the General Rule Breaks

A few edge cases decide whether a plan works.

Borrowed-funds policy splits three ways. Across a wholesale network, some programs accept documented secured borrowing, some cap the borrowed share, and some want part of the down payment unborrowed. A fully borrowed down payment may meet resistance at the stricter programs. Unsecured borrowing, such as a credit-card advance, is generally not acceptable. Confirm the purchase lender’s position before you draw.

The line does not replace the down payment. It changes where the money comes from. The purchase loan still carries its leverage cap. A stronger down payment can lift coverage and lower the payment, but it never erases credit floors, reserve rules or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage. Clearing the coverage test on the new property does not account for the line’s payment, so your cash flow still has to carry it.

Reserves are a separate pot. Because borrowed funds are commonly excluded from reserves, you may need liquid cash beyond what the line provides.

The cabin problem. Rustic vacation properties often hit eligibility walls. Log homes, barndominiums and manufactured homes are not offered in the network’s DSCR programs. The equity line side excludes manufactured homes, co-ops, condotels, and log homes too. Condominiums, including non-warrantable ones, townhomes, PUDs and 2-4 unit properties are eligible on the line side, subject to program minimums.

Title. Lines go to individuals or revocable living trusts. A rental already deeded to an LLC cannot hold the line. It needs a vesting change or a DSCR cash-out instead.

Where it is available. Lendmire arranges home equity lines in its 16 full-service states only, narrower than its 41-market DSCR footprint, which includes Washington, D.C.

Key Terms Defined

HELOC: A revolving line secured by a property, where you borrow and repay against equity during a draw period.

CLTV: Combined loan-to-value, which adds the line to the first mortgage and divides by the property’s value.

Draw period: The stretch when you can borrow from the line, often with interest-only payments.

DSCR: The debt service coverage ratio, which compares a property’s monthly rent to its own monthly principal, interest, taxes, insurance and HOA dues.

Seasoning: How long funds or a loan have been in place before a lender will count them.

What the Decision Looks Like in Practice

Picture an investor with a rental carrying solid equity and a vacation-home target. The first question is how much of the down payment the line should fund. Funding all of it pushes total borrowing across both properties toward the full purchase price. Funding part of it, with the rest in cash, leaves a cushion.

The second question is whether the vacation home needs its own rent to carry both payments. A DSCR test compares rent to the new property’s payment only. Clearing 1.00 is not positive cash flow, because repairs, vacancy, management, utilities and capex sit outside the calculation. The line’s payment sits outside it too. The rent should cover the new mortgage and the line together for the plan to work comfortably. If it does not, the shortfall comes from your pocket.

The third question is classification. If the property will be mostly rented, a DSCR purchase fits better than a second-home loan. If you will use it mostly yourself and rent it occasionally, a second-home loan with debt-to-income underwriting may fit, at a lower required down payment.

Sequence matters most. Open the line before the contract. Draw it, move the funds, and keep the statements. Then let the purchase lender review a clean file.

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. Lendmire is a mortgage broker that arranges financing through select wholesale partners and is never the lender. You can reach the team at 828-256-2183 or request a quote.

For current guidelines and terms, see Lendmire’s investment-property HELOC programs page.

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.

References

1. White Coat Investor – HELOC on Investment Property

2. Yahoo Finance

3. CFPB’s HELOC overview