Investment Property HELOC Lenders for the Down Payment on a Construction Loan

The Quick Read: A home equity line of credit (HELOC) on a rental can supply the cash for a construction loan down payment, but the construction lender, not the HELOC lender, decides whether that borrowed cash counts, so you ask the construction lender first and open the line second.

• On an investment property, the network ceiling is 70% combined loan-to-value (CLTV), with a 700 minimum credit score and a $500,000 maximum line.
• The line must be open and funded before you apply, because the construction lender wants to watch the money land in your account.
• Combined leverage counts the first mortgage, the line, and the construction loan together.
• Because the rental earns nothing until the build is complete, you carry the line’s cost from your own pocket during construction.
• Which lenders fit depends on your credit, equity, property type, and how the construction lender treats borrowed funds.

What an Investment Property HELOC Actually Does

A HELOC is a funding source, not a construction loan. It is a revolving line secured by a property. You draw cash, repay, and can draw again during the draw period, as The White Coat Investor explains.

Once the line is approved, the money goes in your account. Most lenders put few limits on how you use it. That freedom is why investors use lines for down payments.

Lenders treat a line secured by a rental as riskier than one secured by your home. Benzinga notes that this can make an investment-property line harder to get. Fewer institutions offer one, and some credit unions and banks decline rentals entirely.

This is where a broker earns its place. Lendmire is a mortgage broker that works with a network of wholesale HELOC lenders. Each lender sets its own guidelines. Matching your property, credit profile, and leverage need to the right program is the job.

Key Terms Defined

HELOC: A revolving credit line secured by property equity. You draw as needed during a set draw period.

Combined loan-to-value (CLTV): All loans secured by the property, added together, divided by its value.

Draw period: The early years of a line when you can borrow, usually paying interest only.

Source of funds: The paper trail showing where your down payment cash came from.

Loan-to-cost: The share of a construction project’s total cost the lender will finance. Many construction lenders also look at loan-to-value on the completed property.

Combined leverage: For a construction project, the first mortgage, the line, and the new construction loan counted as one stack of debt.

Does a Construction Lender Accept HELOC Cash?

Sometimes. No federal rule makes borrowed down payment funds eligible or ineligible for a construction loan. It is lender and program policy.

A BiggerPockets forum thread on this question reports that some lenders allow a HELOC down payment on a rental purchase. It also points out that you are effectively financing 100% of the property.

The construction lender treats HELOC draws as borrowed funds. Some programs cap the borrowed share of your contribution. Others want a portion in unborrowed cash. A few accept it fully.

Your line approval does not bind the construction lender. That fact drives the whole sequence below.

How Underwriting Treats the Line, Step by Step

Here is the path from first call to a funded line.

1. Choose the collateral. The line can sit on your home or on an existing rental. A line on a rental runs through the investment-property rules covered below.

2. Ask the construction lender first. Find out whether borrowed funds count, whether there is a cap, and what documents it wants.

3. Qualify the line. HELOC lenders judge you and your equity. The maximum debt-to-income ratio is 50%, and a ratio above 45% requires a 680 minimum score. The lender reviews your file on the interest-only payment calculated on the maximum draw, which is a stricter test than your actual early payment.

4. Value the property. An investment line caps at $500,000, so valuation is almost always automated. A traditional appraisal commonly does not happen, though you can request one.

5. Close and draw. At least 75% of the line is drawn at closing, and that drawn balance starts costing you right away. A rental has no income until completion, so you carry that cost from your own pocket during the build.

6. Season the cash and document it. Keep the HELOC agreement, the transfer record, and account statements showing the funds arrive.

7. Apply for the construction loan. That lender underwrites the project on its own measures: the budget, the builder, your strength, and loan-to-cost or as-completed value.

What Wholesale HELOC Lenders Look For

On this network, ceilings depend on occupancy. An investment-property line tops out at 70% CLTV. A line on a primary residence or second home reaches 90% CLTV only with a 720 or better credit profile. Never read the higher figure as available on a rental.

All figures are typical network guidance, subject to lender guidelines and full file review.

Credit above 700 on an investment line buys comfort, not leverage. Both the 720 and 700 tiers reach the same 70% CLTV. A market source, The White Coat Investor, reports investment-property lines up to 80% loan-to-value across the broader market. The network figure for an investment property is 70% CLTV.

The five-year draw structure on an investment line is followed by a 25-year fully amortizing repayment period. That interest-only runway is generally long enough to cover a build, though your construction timeline is yours to confirm.

Eligible property types include single-family homes, 2-4 units, PUDs, townhomes, and condominiums, including non-warrantable condos. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned properties are not offered. These lines are available in 16 states, a narrower footprint than Lendmire’s DSCR programs, which run across 41 markets, including Washington, D.C.

Where the Rules Break

A few edge cases change the answer.

Title and vesting. The line must be held by you individually or by a revocable living trust. LLCs, corporations, partnerships, and irrevocable or land trusts cannot hold title. A rental already deeded to an LLC needs a vesting change first, or a DSCR cash-out refinance instead. Many investors discover this late.

Land equity. If you already own the lot, many construction lenders credit its equity toward your contribution. Equity is the appraised value minus any payoff. That can shrink or eliminate the HELOC cash you need. Land-ownership rules vary by lender.

A line on the building site. A second lien on the construction collateral adds to combined leverage. The construction lender may not allow subordinate financing on its own collateral. Confirm that directly before you plan around it.

Exposure limits. A borrower can hold at most three lines. An investor with more than 15 financed properties is not eligible.

Down payment versus reserves. These are separate pots. Reserves are the cash you hold after closing. Some programs let borrowed money cover one but not the other, so ask how your construction lender classifies it.

Variable payments. The line floats, so the project must still work if borrowing costs jump. BiggerPockets recommends stress-testing the deal against a spike and keeping the use of the line short term.

Fixed alternative. A home equity loan is a lump sum with a predictable payment. That is a separate product from a HELOC, and the trade is flexibility for stability.

A Worked Example in Percentages

Run the numbers on a modeled scenario. These are assumptions, not market data.

Say you own a rental free of heavy debt. Assume the existing first mortgage sits at 45% of the property’s value, and the lender sets the ceiling at 70% CLTV for an investment property. That leaves at most 25% of the value for a line, and a smaller number if the cost to carry the debt tightens your debt-to-income ratio.

Next, the construction lender looks at the whole stack. It counts the first mortgage, the line, and the construction loan together. If it caps borrowed contribution at a share of your down payment, the line may only cover part of what you need. The rest comes from savings or land equity.

The takeaway is simple. The line size is set by equity and debt-to-income, and the usefulness of the cash is set by the construction lender’s policy. Both limits have to clear.

Checklist for Choosing a Program

Which lenders fit depends on your file. Use these questions before you open anything.

• Does the construction lender accept borrowed funds, and is there a cap?
• How long must the cash sit in your account before the application?
• Is subordinate financing on the new collateral allowed?
• Does the HELOC lender allow your title structure?
• Do you clear 700 on credit and stay under the debt-to-income limits?
• Can you carry the line payment, the construction loan payment, and any existing mortgage until completion?
• Is your property type eligible?

A broker that shops multiple wholesale lenders can answer several of these at once. The construction lender’s answer is the one that cannot be bypassed.

After the Build: The DSCR Exit

When the property is finished and rented, many investors refinance into a permanent loan. A DSCR loan is one option. DSCR compares the monthly rent to the property’s own payment of principal, interest, taxes, insurance, and any association dues. The complete DSCR loans guide walks through the ratio.

Some points on how those programs work across the network:

• Many select programs start at 1.00 coverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted.
• A cash-out refinance tops out around 75% LTV on a standard rental, with about six months of seasoning as the common expectation.
• Clearing 1.00 is not the same as positive cash flow. Repairs, vacancy, management, and the HELOC payment sit outside the ratio. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.

The HELOC payment is not part of the new property’s DSCR calculation. It still comes out of real cash flow. Plan to pay the line down from the refinance or from rent.

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. Call 828-256-2183 or request a quote.

About Lendmire

Lendmire — NMLS# 2371349 — is a mortgage broker that arranges home equity lines of credit in its 16 full-service states through wholesale lenders, on primary residences, second homes and investment properties. Every line is subject to the lender’s guidelines and full underwriting. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. The White Coat Investor — HELOC on Investment Property

2. Benzinga — Best HELOC for Investment Property

3. BiggerPockets Forum — Using a HELOC for Down Payment or Full Purchase

4. BiggerPockets — Ways to Use Home Equity