Best HELOC Program on an Offer Letter

The Quick Read: The best HELOC program for an accepted offer on a rental is the one that creates usable down payment cash without disqualifying the purchase loan, and that depends on which property secures the line and how the DSCR lender treats borrowed funds.

• The HELOC and the DSCR purchase loan are two separate loans with two separate approvals.
• The line creates cash; the purchase lender decides whether that cash counts toward down payment, closing costs, or reserves.
• On an investment property, the network ceiling is 70% CLTV. On a primary residence it reaches 90% only at a 720-or-better credit profile.
• Open the line before you go under contract, and ask the purchase lender how it treats borrowed funds before you draw.
• Clearing the rental’s coverage test is not the same as positive cash flow, because the line’s payment still comes out of your bank account.

“Offer letter” is ambiguous, so here is the reading this article uses. You have an accepted offer, or are about to write one, on a rental property. You need cash for the 15%-25% down payment. A home equity line is the source. The question is which line, secured by which property, keeps the purchase loan intact. Lendmire is a mortgage broker that shops a wholesale network, so the answer below describes how these programs behave rather than naming a winner. Leverage, reserves, and pricing vary by lender and program; the final terms follow the full file review.

What a HELOC Actually Does in This Deal

A HELOC is a revolving credit line secured by property you already own. Per the CFPB’s explanation of a HELOC, you can borrow up to your credit limit at any time during the draw period, which could last 10 years, for example. The same source notes that HELOCs usually carry a variable rate, so payments can change month to month, and that some let you convert part of the balance to a fixed rate.

In a rental purchase, the line plays one role: it supplies the down payment. It does not replace the down payment. The purchase lender still wants to see where the cash came from, and the DSCR loan still underwrites the rental on its own merits.

DSCR compares the property’s rent to its own payment of principal, interest, taxes, insurance, and any HOA dues. Qualification runs primarily on property-level rental income covering that payment, subject to lender guidelines. For the full mechanics, see Lendmire’s complete DSCR loans guide.

Which Property Secures the Line?

This is the first real decision, and it shapes everything after it.

Your primary residence usually gives the highest leverage and the easiest approval. It also puts your home behind a business purchase. If the rental underperforms, the property at risk is where you live.

An existing rental keeps your residence out of the chain. The tradeoff is tighter leverage. Across the wholesale network, an investment-property line tops out at 70% CLTV, with a 700 minimum credit profile and a maximum line of $500,000. Market surveys report broader ranges for investment-property lines; a market explainer cites 65%-75%, and the network figure is the 70% above.

The network figures differ by occupancy, so read the right row:

Two caveats matter. A primary-residence line above $500,000 requires a 700 or better credit profile (720 on the longer-runway structure), caps at 75% CLTV, and needs a full appraisal. And the lines are available only in the 16 states where Lendmire offers full-service lending, which is narrower than its DSCR footprint.

If your rental sits inside an LLC, note that these lines cannot be held in an LLC, corporation, or partnership. Title must sit with you individually or in a revocable living trust. A property already deeded to an LLC needs a vesting change, or a DSCR cash-out refinance instead.

How Underwriting Treats the Cash, Step by Step

1. Open and fund the line before you go under contract. A HELOC has its own underwriting. Waiting until the offer is accepted puts the whole deal at the mercy of a second approval.

2. Ask the purchase lender how it treats borrowed funds in three buckets: down payment, closing costs, and reserves. Treatment can differ by bucket. Get the answer in writing where possible.

3. Document the draw. Expect the HELOC statement, bank statements showing the proceeds landing in your account, and possibly a short seasoning period for the funds.

4. The DSCR loan underwrites the rental. Leverage tiers, credit floors, and reserves all still apply. Borrowed cash never erases them.

5. Plan the exit. The common plan is a cash-out refinance on the new rental that pays the line down. Cash-out on standard rentals tops out around 75% LTV, with about six months of seasoning as the usual expectation. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.

Most programs we place files with accept documented HELOC draws for the down payment. Some cap the borrowed share. A few want part of the down payment to be unborrowed cash. Reserves are the sharp edge: borrowed funds are commonly accepted for down payment or closing costs but excluded from reserves. Reserves vary by lender, leverage, loan size, and transaction type, commonly around six months of PITIA.

Structures That Exist

On the equity-line side, two draw structures are available on primary residences and second homes. One has a 3-year interest-only draw followed by a 17-year amortizing repayment. The other has a 5-year draw followed by a 25-year repayment. Investment lines run the 5-year draw and 25-year repayment structure only. Tennessee shortens both. Pricing floats during draw and repayment and never converts to fixed on these products, which differs from the fixed-rate conversion option the CFPB describes for some lines.

At least 75% of the line is drawn at closing. After closing, the minimum subsequent draw is $1,000, with Texas at $4,000, where that program states one. A line at or below $500,000 ordinarily uses automated valuation rather than a traditional appraisal, and a borrower can request a full appraisal in any case. Debt-to-income caps at 50%, and the line is qualified on the interest-only payment calculated on the maximum draw.

On the purchase side, the DSCR loan spine is the 30-year fixed. Extended terms and interest-only periods are available through select lenders, and ARM structures exist. Most purchases land at 75%-80% LTV, with select programs reaching 85% LTV with roughly a 700+ score. Most DSCR programs want around 660, with a 620 floor in parts of the network. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.

Where the General Rule Breaks

Borrowed funds are not universal. Some lenders welcome documented draws. Others do not. Large retail lenders and depository institutions often apply stricter rules than non-QM programs, so a refusal from one is not a verdict on the whole market.

Fully borrowed deals. If the line covers the down payment and the DSCR loan covers the rest, you are effectively financing close to 100% of the property. You have no equity cushion, and a soft rental market puts two liens at risk.

Line freezes. The market explainer notes that lenders can freeze the undrawn portion if collateral value drops materially or your credit changes. A line you counted on can vanish between offer and closing. That is the strongest argument for drawing early and holding the funds in your account.

Rate drift. Because the line is usually variable, the carry cost of your down payment can rise while a fixed-rate DSCR payment stays flat.

Listed or recently listed properties. A property listed for sale, or listed within the past 60 days, is ineligible to secure a line in Indiana, North Carolina, Pennsylvania, Tennessee, Texas, and Washington. Texas primary residences also carry homestead rules, including an 80% combined cap and a 12-day waiting period.

Ineligible properties. Manufactured homes, co-ops, condotels, log homes, and commercial or agricultural-zoned properties are not offered on the equity-line side. DSCR on manufactured homes, log homes, and barndominiums is likewise not offered.

The Number That Misleads Investors

A DSCR file can clear the coverage test while your real monthly cash flow is negative. The ratio looks only at rent versus the property’s own payment. The HELOC payment, repairs, vacancy, management, utilities, and capex sit outside the calculation, yet all of them draw on your bank account.

A useful test: the purchase property should carry its own mortgage, and you should also be able to carry the line from your own income without counting on the rental to cover it. If you can only service both liens when the unit is full and nothing breaks, the structure is too tight. In that case, consider more unborrowed cash, a smaller draw, or a stronger-coverage property. A 1.00 coverage ratio is where many select programs start; a separate select-lender path goes below 1.00 with leverage and terms adjusted, which makes the carry question more important, not less.

Which Line Fits Which Borrower?

A broker earns its keep here. Lendmire works with a network of wholesale HELOC lenders and matches the scenario (property type, credit profile, leverage need, and how the purchase lender treats borrowed funds) to the program. For a related look at funding a purchase from existing equity, see Lendmire’s piece Best DSCR HELOC Program for a Cash Offer on a Rental.

Key Terms Defined

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

Repayment period: the later stretch when you can no longer draw and payments amortize the balance.

CLTV: combined loan-to-value, which adds every lien on the property and divides by its value.

Seasoning: the time funds or a loan have been in place, which lenders use to judge where cash came from.

DSCR: debt service coverage ratio, the property’s rent divided by its own monthly obligation.

Reserves: liquid funds held after closing, usually counted in months of PITIA.

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. Whatever structure you choose, the offer is only as strong as the weakest approval behind it.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage brokerage serving homeowners and real estate investors in its 16 full-service states. Home equity lines of credit are arranged through wholesale lending channels; Lendmire brokers the line and the lender underwrites each application under its occupancy-based guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFPB’s explanation of a HELOC

2. Opendoor – Can you use a HELOC to buy another house

3. IRS Publication 936