Best HELOC Program to Fund a Down Payment on a New Home

The Quick Read: There is no single best program, because the right one is where two approvals line up: a home equity line sized to your equity, credit profile, and property type, and a purchase loan that accepts secured borrowed funds toward the down payment, with rent that still covers the new loan. Lendmire is a mortgage broker, not a lender. It matches your file to programs across a wholesale network instead of pushing one product.

• The ceiling on your line depends on which property secures it: an investment property tops out at 70% combined loan-to-value, while a primary residence or second home can reach 90% only at a 720 credit profile or better.
• The purchase lender decides whether borrowed money counts as a down payment, and that rule varies by program.
• On a DSCR loan, the line payment generally stays outside the coverage math, but it still comes out of your pocket every month.
• Lendmire’s home equity line programs are available in 16 full-service states, which is narrower than its DSCR footprint.

What a HELOC Down Payment Actually Is

A home equity line of credit (HELOC) is a revolving credit line secured by a property you already own. You borrow against your equity, which is the property’s value minus what you owe on it. For a down payment, you draw cash from the line, move it into your bank account, and use it at closing on the new home.

The line is a separate loan with its own approval. It does not wait for your purchase contract, and the purchase lender does not control it. That split is why the question “which program is best” has two halves.

Two kinds of collateral exist. You can secure the line with a home you live in, or with a rental you already own. Lines on a primary residence or second home reach higher leverage. Lines on an investment property are held to a lower ceiling. Both are underwritten as consumer-style credit lines to you personally, which matters later when we reach title and entities.

What Makes One HELOC Program Better Than Another?

The better program is the one whose ceiling, credit floor, and structure fit your equity and the occupancy of the collateral. Combined loan-to-value (CLTV) is all liens on a property divided by its value. Across Lendmire’s wholesale partners, the ceiling depends heavily on occupancy.

Those tops are not where most borrowers land. On a primary-residence line, a 700 score typically reaches 85% CLTV up to $500,000, or 75% up to $750,000. A 660 score reaches 85% up to $500,000. A 640 score reaches 80%, and the lowest tiers drop to 70% and 60% with smaller maximum lines. On a second-home line, a 660 score typically reaches 80%, and a 640 score reaches 75%.

An investment-property line is the tightest of the three. It requires at least a 700 score and stops at 70% CLTV on every tier. If you hold equity in both a primary home and a rental, the primary home usually gives you more room.

Beyond the ceiling, compare these features:

• Draw structure. Primary and second-home lines come in two shapes: a 3-year interest-only draw followed by a 17-year repayment, or a 5-year draw followed by a 25-year repayment. Investment lines use the 5-year and 25-year shape only.
• Drawn at closing. At least 75% of the line is drawn when the line closes, so interest starts on most of it right away. Size the line to what you need, not to the maximum.
• Payment behavior. Pricing floats through both the draw and repayment periods and never converts to fixed.
• Line size. Lines run from $25,000 to $750,000. Anything above $500,000 is primary-residence only and requires a full appraisal.

How Underwriting Treats the Borrowed Down Payment, Step by Step

The HELOC lender and the purchase lender each run their own test, and neither one reads the other’s approval as permission. Here is the order that works.

1. Pick the collateral. Choose which property secures the line, using the ceilings above. Title must sit with you personally or in a revocable living trust.

2. Qualify for the line. The lender looks at credit, debt-to-income (DTI), and value. DTI is your monthly debts divided by your monthly income. It is capped at 50%, or 45% for scores from 600 to 679, and it is calculated on the interest-only payment on the maximum draw.

3. Value the property. Lines at or below $500,000 ordinarily use an automated valuation with no traditional appraisal. A higher CLTV may require a second valuation. You can also request a full appraisal in any case.

4. Close the line, then draw. Draw the cash into your own account. The statement showing the advance and the deposit becomes your paper trail.

5. Show the purchase lender where the money came from. On a purchase loan, the lender asks for sourcing on the down payment. A secured draw is documented debt, which is different from an unexplained deposit.

6. Close the purchase and carry three obligations. You now pay the first mortgage on the home that secures the line, the HELOC, and the new loan.

Sequence matters. Open and fund the line before you go under contract, and confirm with the purchase lender that borrowed funds are acceptable before you draw. A draw you cannot use is interest you pay for nothing.

How the Line Fits Next to a DSCR Purchase Loan

When the new home is a rental, the purchase loan is usually a DSCR loan. The debt service coverage ratio compares the property’s monthly rent to its monthly payment of principal, interest, taxes, insurance, and any association dues, known together as PITIA. Lendmire’s complete DSCR loans guide covers that math in full. A DSCR loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. That is why the line on your home generally does not enter the coverage ratio.

Here is what the purchase side typically looks like across the network:

• Most purchase files land at 75% to 80% loan-to-value (LTV), meaning 20% to 25% down.
• Select programs reach 85% LTV, which is 15% down, with roughly a 700-plus score.
• A 620 credit floor exists in parts of the network, most programs want around 660, and 700-plus opens the strongest leverage.
• Loans reach up to $3,000,000 on standard programs, with smaller balances available through select lenders.
• Coverage of 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted.

Reserves are the cash you must hold after closing, usually counted in months of PITIA. They commonly run around 6 months. Conservative rate-and-term files at modest leverage under $1,500,000 can see reserves waived, and larger loans typically step up to about 9 months. Some programs accept secured borrowed money toward the down payment but not toward reserves, so a line can fund the down payment while reserves still need your own cash.

Picture an investor buying a rental at 75% LTV on the purchase loan. The rent clears roughly 1.2x on the new payment. The remaining down payment comes from a line secured by the investor’s primary home. The 1.2x describes the new property alone. It says nothing about the line payment, which the investor pays from other income or from portfolio cash flow. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.

That gap is where good deals go wrong. Clearing 1.00 does not mean positive cash flow. Repairs, vacancy, management, utilities, and capital expenses sit outside the calculation. Add a variable line payment on top of that, and a 1.2x deal can feel tight in a slow month.

A larger down payment lowers the monthly payment and can lift the coverage ratio. It never erases leverage caps, credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.

Structures and Variations Worth Knowing

Lien position. The line can sit in first or second position. Most borrowers with an existing mortgage get a second-lien line. A borrower with no mortgage on the collateral can place the line in first position.

Fully borrowed versus partly borrowed. Some purchase programs accept a fully borrowed down payment. Others cap the borrowed share or want part of it unborrowed. A fully borrowed down payment is close to 100% financing when you count both loans together. That leaves you no equity cushion in the new property on day one.

HELOC versus a cash-out refinance. A line leaves your existing first mortgage in place. A cash-out refinance replaces it and resets seasoning on that property. Seasoning is the waiting period a lender wants between events, such as owning a property before refinancing it. On DSCR cash-out refinances, tops run around 75% LTV across most of the network, and about 6 months of seasoning is the common expectation. If you hold a low first mortgage, the line often keeps more of that advantage.

Property types. Eligible collateral includes single-family homes, 2-4 unit properties, PUDs, townhomes, and condominiums, including non-warrantable ones. A 2-4 unit property requires a 640 minimum on the longer-runway structure, meaning the 5-year draw and 25-year repayment. Modular factory-built homes are eligible on that structure only. Manufactured homes, co-ops, condotels, log homes, and commercial, mixed-use, or agricultural-zoned properties are not eligible.

Where the General Rule Breaks

The line comes with its own risks. As the Consumer Financial Protection Bureau explains, a HELOC is an open-end line you can draw on during a draw period, followed by a repayment period. It also warns that falling behind can cost you the home. When a primary residence secures a down payment for a rental, you are putting your own house behind someone else’s tenant.

Your line can shrink. Federal rules let a lender freeze or reduce a line on specified triggers, such as a significant drop in the home’s value, per 12 CFR 1026.40. A line that was available when you wrote the offer can be smaller by closing. Draw early and document the deposit.

Selling and renting restrictions. A line’s terms may prohibit renting the home to others, and the balance is generally due in full if you sell. Read your line’s terms before you plan to convert the collateral home into a rental.

An LLC cannot hold title. The collateral must be held by you individually or by a revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title on the line. A property already deeded to an LLC needs a vesting change or a DSCR cash-out refinance instead. This is the sharpest structural difference from a DSCR loan, where the purchase itself may sit in an LLC, subject to program terms.

Credit history gets scrutiny. A bankruptcy needs 4 years of seasoning from discharge or dismissal. Foreclosure-family history splits by program: one seasons a foreclosure in 7 years and a deed-in-lieu or short sale in 4, while the other declines that history entirely.

Exposure limits. A borrower is limited to three lines. A borrower with more than 15 financed properties is not eligible.

Listing status and location. In some states, a property listed for sale or listed within the past 60 days is ineligible for the line. Lendmire’s home equity line programs are available only in 16 full-service states.

Is This the Right Move for You?

Use a line when you have real equity, a credit profile that reaches a workable tier, and rent that clears your target coverage with room to spare. It fits best when the alternative is selling an asset, draining reserves, or refinancing a low first mortgage.

Skip it when the numbers only work if nothing goes wrong. Three payments compete for the same income, and one of them floats. A thin coverage ratio plus a variable line payment is a stack that breaks under a vacancy or a repair.

Compare the borrowed-funds rule on the purchase loan before you commit to the line. If you are weighing a second line on a rental you already own, Lendmire’s piece Best Investment Property HELOC Program to Cover a Down Payment on Another Home covers that tradeoff.

Key Terms Defined

HELOC: A revolving line of credit secured by a property you own, drawn against your equity.

CLTV (combined loan-to-value): All loans secured by a property, added together and divided by its value.

DSCR: The property’s monthly rent divided by its monthly PITIA payment.

PITIA: Principal, interest, taxes, insurance, and any association dues on a property.

Seasoning: The waiting period a lender wants between two events, such as buying and then refinancing.

Reserves: Cash you must still hold after closing, usually counted in months of payments.

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. Programs and figures are subject to lender guidelines and full file review, and nothing here is a commitment to lend.

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.

References

1. Consumer Financial Protection Bureau

2. eCFR – 12 CFR 1026.40, Requirements for home equity plans