Best HELOC Program to Buy Another Home Before Selling the First

The Quick Read: The right line is one opened on your current home before you list it, sized to the equity you actually have, and paired with a purchase loan that accepts borrowed money for the down payment, and it has to fit what you can carry if the old home takes a while to sell. No single product wins for everyone. The best program for your situation depends on your equity, credit profile, the occupancy of the home that secures the line, and how the next purchase loan treats borrowed funds.

• Open the line before you list the home. Once the home is under contract or sold, the collateral is gone.
• Across our wholesale network, equity lines on an investment property top out at 70% CLTV (combined loan-to-value, all liens against the home). Lines on a primary residence or second home can reach 90% CLTV, but only at a 720 or better credit profile.
• Most programs require at least 75% of the line to be drawn at closing, so you start paying interest on most of it right away.
• A DSCR purchase loan looks at the rental’s income, but you still pay the line from your own pocket every month.
• Whether the purchase lender accepts borrowed funds, and for which uses, varies by program. Ask before you open the line.

How Does a HELOC Let You Buy Before You Sell?

A HELOC lets you borrow against the equity in a home you already own. You use that money for the down payment and closing costs on the next property. When the old home sells, the sale proceeds pay off the line. That is the whole idea: you skip the sale-contingent offer and carry both homes for a stretch.

Here is the sequence, step by step.

1. Open the line first. Lenders need the home as collateral, so you apply before you list. NerdWallet advises against waiting until the last minute, because a line can take longer to approve than many buyers expect.

2. Size the equity. The lender takes a percentage of the home’s value, then subtracts what you owe on the first mortgage. What remains is roughly your line. The CFPB’s HELOC booklet walks through the same method, using 75 percent of appraised value as an illustration only. It is not a rule, and our network’s actual ceilings are in the next section.

3. Draw the funds. The money goes toward the down payment and closing costs on the new property.

4. Qualify for the new loan. The purchase lender decides how the line payment counts and whether borrowed money is acceptable.

5. Carry both properties. NerdWallet notes that buying first can leave you paying for the mortgage and upkeep on two homes at once.

6. Sell and repay. The closing statement pays off the first mortgage and the line. According to the CFPB’s HELOC brochure, you are generally required to pay a HELOC off in full when you sell the home.

What Equity Does a Lender Actually Require?

Equity limits depend on occupancy, credit score, and line size. Lendmire brokers these lines through select wholesale partners and is never the lender, so every figure below is a guideline subject to lender review, not a commitment to lend. The table shows the highest ceiling in each occupancy.

*The 90% ceiling on a primary residence applies to lines up to $500,000. A line above $500,000 is primary-residence only, requires a 700 or better credit profile (720 on the longer-runway program described below), caps at 75% CLTV, and needs a full appraisal.

Lower credit scores step the ceiling down. On a primary residence, a 660 profile reaches 85% CLTV, a 640 profile reaches 80%, and a 620 profile reaches 70%. A 600 profile is the program floor and reaches 60%. Most buy-before-sell borrowers are drawing on their primary residence, so that row matters most.

Other rules that shape the line:

• Debt-to-income: the maximum is 50%, or 45% for credit profiles from 600 to 679. The payment is qualified on the interest-only amount at the maximum draw, even if you plan to draw less.
• Valuation: lines at or below $500,000 ordinarily use an automated valuation instead of a traditional appraisal. A higher CLTV can trigger a second valuation.
• Property types: single-family, 2-4 units, PUDs, townhomes, and condos, including non-warrantable condos. Manufactured homes, co-ops, condotels, log homes, and commercial or agricultural properties are not eligible.
• Title: the borrower or a revocable living trust must hold title. An LLC cannot. A home already deeded to an LLC needs a vesting change or a different structure.
• Exposure: a borrower is limited to three lines and cannot own more than 15 financed properties.

If the line will sit on a rental instead, Lendmire’s piece on using an investment property HELOC to buy another home covers that route in detail.

How Do the Draw Structures Work?

Our network offers two HELOC programs. The first has a 3-year interest-only draw followed by a 17-year fully amortizing repayment. The second, the longer-runway program, has a 5-year interest-only draw followed by a 25-year repayment. Investment lines use the 5-year structure only.

Three features matter for a buy-before-sell plan:

• The line starts mostly drawn. At least 75% of it is drawn at closing. You cannot open a large line and leave it idle as a safety net without paying interest on most of it.
• Pricing floats. It never converts to a fixed structure, in either the draw or the repayment period.
• Later draws have a floor. Each draw after closing carries a minimum of $1,000 on the longer-runway program. The 3-year program does not state a subsequent-draw minimum.

Interest-only payments keep the monthly carry lower during the draw period. They also mean the balance does not fall until the old home sells.

How Does the Purchase Lender Treat the Borrowed Money?

This is the question that decides most buy-before-sell plans. A line is fine on its own, but the purchase loan has its own rules about where your cash came from.

On a conventional purchase, the line payment counts in your debt-to-income ratio. Some lenders also limit whether borrowed money may be used for a down payment at all. Bankrate notes that not every lender allows home equity funds toward a down payment when you are also taking a mortgage on the new property. Many lenders accept borrowed funds for the down payment but not for reserves, and some want the funds to sit for a period first. Ask each purchase lender in writing.

A DSCR loan works differently. DSCR is the debt service coverage ratio: the property’s monthly rent divided by its monthly payment of principal, interest, taxes, insurance, and any HOA dues (PITIA). The loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. That helps if your personal debt-to-income ratio would block a conventional loan. Our complete DSCR loans guide covers the full mechanics. Here are the pieces that touch this strategy.

• Leverage: on a purchase of an investment property, most files land at 75%-80% LTV (20%-25% down). Select programs reach 85% LTV (15% down) with roughly a 700 or better score.
• Coverage: 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Stronger ratios open better leverage and pricing.
• Credit: most programs want around 660. A 620 floor exists in parts of the network, and 700 or better unlocks the strongest leverage tiers.
• Reserves: these commonly run about 6 months of PITIA. They vary by lender, leverage, loan size, and transaction type, and loans above $1,500,000 typically step up to about 9 months.

A DSCR file does not make the line payment disappear. The ratio compares rent to the new property’s payment only. Your line payment sits outside it, and so do repairs, vacancy, management, and utilities. Clearing 1.00 does not mean positive cash flow.

Picture an investor buying a duplex at 75% LTV, with the 25% down payment and closing costs drawn from a line on a primary residence. The rent clears about 1.2x coverage, so the loan side looks solid. But that investor now pays the line, the new loan, and the old home’s costs from personal income until the old home sells. These specifics are subject to lender guidelines and a full review of property, leverage, and credit.

Where Does the Rule Break?

The standard path is open the line, draw, buy, sell, repay. These edge cases bend it.

• The home is already listed. In six of the sixteen states where we place HELOCs, a home listed for sale or listed within the past 60 days is ineligible. Ask about this before you list.
• The home does not sell. Both the line and the new loan stay outstanding, and the CFPB warns that you could lose the home if you cannot keep up with payments. Set a date by which you will cut the price or rent the old home.
• You plan to rent the old home. Some lines restrict renting the property. Read the terms before you decide, because a rental conversion may break them.
• The home’s value drops. Lenders may reduce or freeze a line if the home’s value falls, according to the same CFPB brochure. A line you counted on can shrink at the worst moment.
• A quick cash-out refinance to repay the line. Many DSCR loans carry a prepayment penalty that steps down over the first years. On a standard rental, cash-out refinances top out around 75% LTV and expect about 6 months of seasoning. Refinancing early to clear the line can cost more than it saves. The DSCR cash-out refinance guide explains how that works.
• The new property is ineligible. DSCR programs in our network do not offer manufactured homes, log homes, or barndominiums.
• Thin-margin rentals. A down payment funded entirely by a line makes the deal effectively 100% financed. A rental has to cover its own payment and absorb the line’s carry, so thin-margin deals get harder. Terms depend on the lender’s guidelines, the property type, the leverage, and a full review of the credit profile.

What Else Could You Do Instead?

A line is one of several ways to bridge the gap. A sale contingency makes your offer depend on selling your current home by a set date, as Redfin describes. Sellers often prefer offers with no such condition. A bridge loan, a home equity loan, or a cash-out refinance on the old home can also fund the down payment. Selling first removes the double carry entirely but leaves you needing a place to live. The right choice depends on how fast you expect the old home to sell and how much overlap you can afford.

Key Terms Defined

HELOC: a home equity line of credit, which lets you borrow against your home’s equity in a draw period and repay in a later repayment period.

CLTV: combined loan-to-value, the total of all loans against a home divided by its value.

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

DSCR: the ratio of a rental’s monthly rent to its monthly PITIA.

PITIA: principal, interest, taxes, insurance, and association dues, the full monthly cost of owning a property.

Seasoning: the waiting period a lender wants before a loan, or borrowed funds, can be used or refinanced.

Prepayment penalty: a fee for paying off a loan, often a DSCR loan, before a set period ends.

What Does the Decision Look Like in Practice?

Start with the end of the story. Decide what you will do if the old home takes twice as long to sell as you expect. If you cannot carry the line, the new loan, and the old home’s costs through that stretch, the plan is too tight.

Then work backward. Check your equity and credit against the tables above. Confirm the old home is not listed and is held in your name or a revocable trust. Ask the purchase lender whether borrowed funds count toward the down payment and whether they count toward reserves. For a rental, run the DSCR coverage on the new property first, then add the line’s carry on top.

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. Reach the team at 828-256-2183 or request a quote.

Treat the old home’s sale date as the one number in this plan you do not control, and size everything else around it.

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. NerdWallet: Buy a Home While Selling

2. CFPB HELOC Booklet (2014 edition)

3. CFPB HELOC Brochure

4. Bankrate: Using Home Equity to Buy Another House

5. Redfin: Buy First vs. Sell First