Buying an Investment Condo in Myrtle Beach With a HELOC

The Quick Read: A home equity line of credit (HELOC) can supply the down payment for a Myrtle Beach investment condo, but it cannot finance the purchase itself. A separate DSCR loan does that, and its lender must agree to accept borrowed money as a source of cash. Each loan faces its own test, and the building has to pass review too.

• Two loans, two tests. The line is underwritten to you: credit, equity, existing liens and debt. The DSCR loan is underwritten to the condo’s rent against its payment.
• The line has a ceiling. On an investment property, equity lines cap at 70% combined loan-to-value (CLTV) and $500,000, with a 700 minimum credit score, subject to lender guidelines.
• The purchase loan has its own limits. On a purchase of an investment condo, most DSCR files land at 75%-80% loan-to-value (LTV). Select programs reach 85% LTV with roughly a 700+ score.
• Down payment and reserves are separate pots. Borrowed money may cover one and often cannot cover the other.
• The project can decide the file. Condo buildings with hotel-style operation or rental pools get extra scrutiny.

How Does a HELOC Fit Into a Condo Purchase?

A HELOC works as a funding tool, not a mortgage on the condo. You borrow against equity in a property you already own, move the cash into your account, and use it as part of the down payment. The DSCR loan then finances the condo. Lendmire, a mortgage broker arranging DSCR investor loans across 40 states plus Washington, D.C. (41 markets total), sees this two-loan setup often. It confuses buyers because two lenders review two different things.

That last row is why sequencing matters. The purchase lender decides whether borrowed cash counts as acceptable down-payment funds. The line itself cannot answer that question for you.

Many lenders accept documented line draws, but a plan funded entirely by borrowed cash can stall a deal. Some lenders cap the borrowed share. Others want a minimum from your own seasoned cash. Ask before you draw, not after.

The complete DSCR loans guide covers the purchase-loan side in more depth. This article stays on the stack: line plus loan plus a Myrtle Beach condo.

Key Terms Defined

• HELOC: A revolving line of credit secured by property you own, which you draw on as needed.
• CLTV (combined loan-to-value): All loans against a property added together, divided by its value.
• DSCR (debt service coverage ratio): Monthly rent divided by the monthly PITIA, showing whether rent covers the payment.
• PITIA: Principal, interest, taxes, insurance, and, on a condo, association dues.
• Draw period: The stretch when you can borrow from the line, usually with interest-only payments.
• Non-warrantable condo: A condo project that fails standard agency eligibility criteria, usually because of the building, not the buyer.
• Seasoned funds: Money that has sat in your account long enough for a lender to treat it as yours.
• Condotel: A hotel-operated condo building where units sit in a rental pool.

Step by Step: How Underwriting Treats the Money

Underwriting follows a fixed order. Each step has to hold before the next one matters.

Step 1: Size the line. Take the property’s value, multiply by the CLTV cap, and subtract what you already owe. That is the most the line can be. On an investment property, the cap is 70% CLTV with a $500,000 maximum line. A line on your primary residence gets a higher ceiling, reaching 90% CLTV, but only at a 720-or-better credit profile. Investment lines are valued by automated valuation and commonly close with no traditional appraisal.

Step 2: Open and fund the line before you go under contract. At least 75% of the line is drawn at closing, so the line starts costing you immediately. Time it to the purchase, not to your first showing.

Step 3: Confirm the DSCR lender’s stance on borrowed funds. Do this before you draw. Treatment is program-specific, and a plan that is 100% borrowed can fail on that alone.

Step 4: Draw, deposit, document. A typical file includes:

• The line’s closing documents and draw confirmation
• Statements showing the cash landing in your account
• Proof that funds cover the down payment, closing costs, and reserves
• A credit report showing the new line as a liability
• The condo’s lease or rent schedule, appraisal, and insurance

Step 5: Run the coverage ratio. The lender divides monthly rent by the monthly PITIA. The HELOC payment is not in that ratio. A short-term-rental program may look at projected short-term income instead of a long-term lease. Ask how the lender will treat a seasonal unit.

Step 6: Keep the pots separate. Down payment, closing costs, and reserves each need their own source. Reserves commonly run around six months of PITIA, though they vary by lender, leverage, loan size, and transaction type. Never assume line proceeds will double as reserves.

What Does the Equity Line Itself Require?

The line is a full loan with its own rules. Across the lenders Lendmire works with, the investment-property version looks like this, subject to lender guidelines and full file review:

• Credit: A 700 minimum on investment properties. Scores above 700 buy eligibility, not more leverage, because both the 700 and 720 tiers top out at 70% CLTV.
• Debt-to-income (DTI): 50% maximum, qualified on the interest-only payment calculated on the maximum draw.
• Structure: A 5-year interest-only draw followed by a 25-year fully amortizing repayment. Pricing floats during both stretches and never converts to fixed.
• Size: Up to $500,000 on an investment property. There is no higher investment tier.
• Title: Held by an individual or a revocable living trust. An LLC cannot hold title on the line.
• Exposure: A borrower is limited to three lines, and a borrower with more than 15 financed properties is not eligible.
• Property types: Single-family, 2-4 units, townhomes, and condos, including non-warrantable ones. Condotels are not offered.

Availability matters too. Lendmire’s home equity line programs run only in its 16 full-service states, a narrower footprint than its DSCR reach. Where your existing collateral sits can decide whether this route is open at all.

Why the Myrtle Beach Building Matters More Than You Expect

A condo is not like a house. The lender reviews the building, not just you and the unit. A non-warrantable project is usually flagged for the project itself. Common triggers include heavy single-entity ownership, a large commercial footprint, delinquent dues, thin reserves, litigation, or weak insurance.

Many oceanfront buildings in resort markets run rental programs or hotel-style operations. DSCR lender appetite for those varies by program, and for some buildings the project review is the real gate. Get the condo questionnaire and the association’s budget and reserve documents early. They tell you more than the listing does.

The association’s master policy covers the building. Your unit coverage fills in what the master policy does not. Know where one ends and the other begins before you offer.

One more point on the local market. Per MLS data relayed by a local brokerage, the condo median sat near $208,500, down 12.4% year over year, with about 8.1 months of supply. The same brokerage, citing AirDNA, reports occupancy near 53%, so underwrite income on a full year rather than a peak summer. 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. A local summary of the city’s short-term rental rules is a starting point, and the city code governs.

Where the General Rule Breaks

Most of the time, the two-loan structure works as described. These are the cases where it does not.

Entity vesting. The line cannot be held by an LLC. A DSCR purchase can often be vested in an LLC, subject to lender program eligibility. The cash can then move into the LLC afterward as a documented member contribution or loan. Confirm the sequence with the DSCR lender first. A property already deeded to an LLC needs a vesting change or a DSCR cash-out instead.

Large portfolios. Above 15 financed properties, the equity line is off the table. A DSCR cash-out refinance, which tops out around 75% LTV across most of the network with about six months of seasoning, is the usual alternative. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.

Primary-home collateral. If the line sits on the home you live in, a weak rental puts that home at risk. This is the single biggest decision in the whole plan, and no ratio fixes it. A line on an existing rental ring-fences the risk better but caps at the lower investment ceiling.

Conventional loans. On a debt-to-income loan, the new line’s payment lands in your DTI and can break approval. DSCR avoids that formula. A lender may still look at your overall debt picture.

The condotel. Not offered on the equity line, and DSCR appetite varies. If the building operates like a hotel, confirm eligibility before you spend money on it.

Thin coverage on the unit. A condo that falls below 1.00 on rent alone is a different conversation. Most select programs start at 1.00. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Interest-only periods and 40-year terms are also available through select lenders. Qualification stays subject to lender guidelines, credit approval, and property review.

Stress-Testing the Stack

Clearing 1.00 is not the same as making money. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities, and capital expenses all sit outside it. In a seasonal market, the gap between peak and off-season can be large.

Run the numbers on a modeled case. Say a condo is bought at 75% LTV on a purchase, with the down payment funded from an equity line. Assume coverage runs about 1.3x in peak season and dips to roughly 0.9x in the slow months. The lender typically reviews income over a longer window, so the file may still work. Your cash flow does not get to average anything out. In the slow months you carry the purchase loan, the line’s payment, association dues, and utilities at once.

Then look at the line itself. The CFPB’s HELOC guidance explains that borrowing stops when the draw period ends and repayment begins, often over ten or twenty years. It also notes that HELOC payments usually vary with a variable rate, and some lines offer a fixed-rate conversion. The lines Lendmire places do not convert. Underwrite the line at its repayment-phase payment, not the interest-only one, and decide now how you will handle that step-up.

Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.

Is a HELOC the Right Tool Here?

It works when three things are true. You have real equity and a credit profile that clears 700. The DSCR lender accepts borrowed funds. And you can carry both payments through a slow season without selling.

It does not work when the line is your only source of cash. A larger down payment lowers the payment and can lift the coverage number. It never erases leverage caps, credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.

Lendmire’s piece Buying A Condo As Your First Investment Property covers the condo side for newer buyers. For the borrowing side, its guide Can You Tap A HELOC For Buying An Investment Property? goes deeper.

Next Steps

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. Equity line programs run in 16 states, and approval is subject to lender guidelines and full file review. This is not 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. Carolina Crafted Homes: Myrtle Beach short-term rental income

2. Carolina Crafted Homes: Short-term vs. long-term rental in Myrtle Beach

3. Carolina Crafted Homes: Short-term rental rules in Myrtle Beach

4. CFPB: What is a home equity line of credit (HELOC)?