How Much Can You Borrow on an Investment Property HELOC for a Vacation Home Down Payment?

The Quick Read: It depends on which property secures the line, but on an investment property the network Lendmire brokers through caps the line at 70% combined loan-to-value (CLTV, meaning all loans against the property as a share of its value) and $500,000, minus what you already owe.

• The formula: property value × 70% CLTV, minus every lien already on the property, up to a $500,000 line. Lines start at $25,000.
• Credit: investment-property lines need at least a 700 score. Credit above 700 does not raise the 70% cap.
• Primary and second homes: these lines reach 90% CLTV, but only at a 720-or-better credit profile.
• The second approval: the lender financing your vacation home decides whether borrowed money counts as your down payment. Ask before you draw.
• Draw size: at least 75% of the line is drawn at closing, so size the line to the need.

How Is the Maximum Line Calculated?

The maximum line is the property’s value times the allowed CLTV, minus all existing liens. Equity sets the ceiling. The cash you need does not.

A home equity line of credit (HELOC) is an open-end line you borrow against and repay over time. Lenders do not lend against all of your equity. NerdWallet reports that lenders generally want at least 20% equity left in an investment property. The network’s 70% cap on investment lines keeps that cushion in place.

The table below shows the room as a share of the rental’s appraised or estimated value, using modeled assumptions rather than market data.

Two things can shrink the result further. One is the line cap. The other is your personal qualification: credit, debt-to-income ratio (DTI, your monthly debts as a share of income), and property eligibility. A HELOC is underwritten on you, not on the rent.

Which Property Should Secure the Line?

Your primary residence supports higher leverage than a rental. The vacation home you are about to buy cannot secure the line at all, because you must own the collateral before the line opens.

On this network, the ceiling depends on occupancy:

Market surveys differ from the network. Experian reports that lenders across the broader market typically cap investment-property lines at 80% loan-to-value. On Lendmire’s network, an investment line stops at 70% CLTV. Do not plan around the higher market figure.

Whichever property you pledge, a missed payment can cost you that property. That tradeoff is the real price of the cash, and it deserves more weight than the line size.

Investment-property lines are also harder to find. Not every lender offers them, limits run below those on a primary home, and qualification is strict because lenders see higher default risk.

What Does the Investment-Property Line Look Like Here?

An investment-property line is a standalone line in first or second lien position, from $25,000 to $500,000, with a 700 minimum credit score and 70% CLTV. Every program detail below is subject to lender guidelines and full file review. Lendmire is a broker, not the lender.

• Draw and repayment: a 5-year interest-only draw, then a 25-year fully amortizing repayment. Pricing floats through both periods and never converts to fixed.
• Draw at closing: at least 75% of the line is drawn when you close. A $500,000 line you only partly need is a poor fit.
• Valuation: an investment line is capped at $500,000, and full appraisals begin only above that. So these lines commonly run on an automated valuation with no traditional appraisal. You can request a full appraisal anyway.
• DTI: 50% maximum, and the lender reviews your file on the interest-only payment at the maximum draw.
• Title: you or a revocable living trust must hold title. LLCs, corporations, partnerships, and irrevocable or land trusts cannot. A rental already deeded to an LLC needs a vesting change first, or a different tool.
• Exposure: under the network’s program rules, a borrower is limited to three lines, and a borrower who owns more than 15 financed properties is not eligible.
• Property types: single-family, 2-4 units, PUDs, townhomes, and condos, including non-warrantable condos. Manufactured homes, co-ops, condotels, log homes, and commercial, mixed-use, or agricultural properties are not offered.
• Availability: these lines are offered only in Lendmire’s 16 full-service states. That is narrower than the 41-market DSCR footprint.

A primary-residence or second-home line is a different product. The same fine print on title, exposure, and property types applies, but the CLTV ceiling and line size are higher. The 90% tier exists only at 720 or better.

Will the Vacation-Home Lender Accept Borrowed Money?

Not automatically. The HELOC lender approves the line. A separate lender decides whether drawn funds count as your down payment on the vacation home.

Across purchase programs, the policy on borrowed funds varies. Some accept a documented line draw. Some cap the borrowed share. Some want part of the cash unborrowed. No universal rule exists, so the order of operations matters. Confirm the purchase lender’s policy first, then open and draw the line, then write the offer.

Expect to document the draw. That usually means the line agreement, the draw statement, and the deposit trail into your account. Borrowed funds are also often excluded from reserves. A HELOC does not waive reserve rules, credit floors, or property eligibility on the purchase.

Is the Vacation Home a Second Home or a Rental?

How the property is classified changes the loan type, the down payment, and how the HELOC payment is treated. A personal second home is generally qualified on your income. A genuine rental can be financed on its own rent.

A DSCR loan is an investor loan that qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. DSCR means debt service coverage ratio: monthly rent divided by the full monthly obligation of principal, interest, taxes, insurance, and any HOA dues (PITIA). 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 complete DSCR loans guide walks through the full mechanics.

On a rental-purpose purchase, most programs in the network land at 75%-80% LTV, which means 20%-25% down. Select programs reach 85% LTV, with 15% down, at roughly a 700+ score. Most programs want around a 660 score, and a 620 floor exists in parts of the network. Coverage of 1.00 is where many select programs start. A separate select-lender path goes below 1.00, with leverage and terms adjusted. Stronger coverage generally opens better pricing and leverage.

Clearing 1.00 is not the same as positive cash flow. The ratio compares rent to PITIA only. Repairs, vacancy, management, utilities, and capital expenses sit outside it. Your HELOC payment sits outside it too, but you still pay it from real income.

If the vacation home will be a short-term rental, leverage differs again. A short-term rental purchase tops out at 75% LTV. 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. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.

Title matters on the DSCR side as well. A rental-purpose purchase can be vested in an LLC, subject to lender program eligibility. A HELOC cannot be held that way.

How Do You Work Backward From the Vacation-Home Price?

Start with the down payment you need, express it as a percentage of the vacation home’s price, and check that your equity room covers it. These are modeled assumptions.

Say you are buying a vacation rental on a rental-purpose DSCR purchase at 75% LTV. You need 25% of the price down, plus closing costs. Your existing rental is worth about the same as the new purchase price, and its first mortgage sits at 50% of value. The 70% CLTV cap leaves room equal to 20% of the rental’s value. That is short of the 25% you need. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.

Change one input and the picture shifts. At 80% LTV on the purchase, the down payment is 20%, and the 20% of equity room matches it exactly. Closing costs would still have to come from other cash. A second rental worth more than the purchase price gives more room. Leverage, reserves, and pricing vary by lender and program; the final terms follow the full file review.

The 75%-drawn-at-closing rule creates its own trap. If the line is far larger than your need, you carry a large floating-price balance from day one. A line sized close to the gap works better. If the numbers still fall short, a smaller vacation home, a larger cash contribution, or a different source of funds is the honest answer.

Another route is a cash-out refinance on the rental, which tops out around 75% LTV across most of the network. About six months of seasoning is the common expectation. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.

What Can Go Wrong?

A HELOC typically adds a second lien and a floating payment to your balance sheet. Combined leverage across both loans matters as much as the line size. A bigger draw means a smaller new mortgage, but you carry two payments.

The Consumer Financial Protection Bureau notes that a lender can freeze or limit further draws if the home’s value falls significantly. Its HELOC booklet explains that lenders set the limit as a percentage of appraised value, then subtract what you owe.

Other risks to price in:

• Floating cost: pricing floats and never converts to fixed. Your payment moves with the balance and the market, and after the interest-only draw it steps up to full repayment.
• Sale of the collateral: a HELOC generally has to be paid in full if you sell the property securing it.
• Stacked obligations: the first mortgage, the HELOC, and the new vacation-home loan all come out of the same cash flow.
• Lost line: a falling valuation or a changed borrower profile can cut off future draws, so do not count on a line as an emergency reserve.

Key Terms Defined

HELOC: a revolving line secured by a property you already own, which you draw on and repay over time.

CLTV: combined loan-to-value, meaning all loans against a property added together as a share of its value.

Lien: a lender’s legal claim on a property, which must be paid before or at sale.

Draw period: the stretch when you can borrow from the line and pay interest only.

DTI: debt-to-income ratio, your monthly debt payments as a share of your monthly income.

DSCR: the ratio of a rental’s income to its full monthly payment, used to qualify investor loans.

PITIA: principal, interest, taxes, insurance, and association dues, the full monthly obligation on a property.

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. Every file is reviewed subject to lender guidelines, and nothing here is a commitment to lend.

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. NerdWallet – HELOC on an investment property

2. Experian – HELOC on an investment property

3. Consumer Financial Protection Bureau

4. CFPB – HELOC booklet