How an Investment Property HELOC Works or Home Equity Loan on a Primary Home

The Quick Read: A line of credit on a rental you already own and a loan or line on your own home are two separate products, and the one you pick decides which property backs the debt, how much you can borrow, and what you stand to lose if the rental income stops. On the wholesale network Lendmire places files with, a line on a rental tops out at 70% combined loan-to-value. A line on a primary home can reach 90% only with a credit profile of 720 or better. Neither product is a rental purchase loan, so most investors pair one of them with a separate loan on the new property.

• A line secured by your home puts your residence on the line. A line secured by a rental keeps the home out of it but comes with tighter limits.
• A rental line carries the network’s tightest limits, covering leverage, credit floor and line size, and the details follow below.
• A home equity loan pays out once as a lump sum. A line lets you borrow repeatedly up to a limit.
• Paying for the rental itself usually takes a DSCR loan, which qualifies primarily on property-level rental income covering the payment, subject to lender guidelines.
• Close the line and draw the cash before you apply for the purchase loan.

Key Terms Defined

HELOC: a revolving line of credit secured by a property, where you draw what you need up to an approved limit.

Home equity loan: a lump sum with a fixed repayment schedule, secured by the same kind of property.

Equity: what the property is worth minus what you owe on it.

Combined loan-to-value (CLTV): every loan against the property added together, divided by its value.

Draw period: the early stretch when you can borrow, usually paying interest only.

Lien position: whether the lender has the first or second claim on the property if it is sold or foreclosed.

DSCR: the debt service coverage ratio, which is monthly rent divided by the full monthly payment (principal, interest, taxes, insurance, and any HOA dues).

Automated valuation: a computer-model estimate of value used in place of a full appraisal.

Prepayment penalty: a fee for paying a loan off earlier than the agreed schedule.

Two Loans Hiding Behind One Question

There are two different loans here. Path A borrows against your primary home and uses the cash to buy a rental. Path B borrows against a rental you already own. The collateral, the limits, and the risk are different on each path.

On Path A, qualifying is typically looser because the home is owner-occupied. NerdWallet also warns that missed payments can put your primary home at risk. That is the real price of the easier route.

On Path B, NerdWallet says the pool of lenders is smaller and the borrowing power is lower. Lenders see higher default risk, because a borrower in trouble is more likely to pay for their own home than for a rental. Experian adds that investment-property lines usually need a higher credit score, a lower debt-to-income ratio, and stronger cash reserves.

Those are market-wide patterns. The network’s own numbers for a rental line follow in the sections below, and credit above 700 buys no extra leverage there, because 720 and 700 reach the same ceiling. Everything here is subject to lender guidelines and full file review.

How Does a Line on Your Primary Home Work, Step by Step?

A line on your primary home works like a second mortgage you can draw from. The lender sizes it from your home’s value minus your first mortgage, then lets you borrow against what is left. The cash lands in your account, and the rental purchase happens separately.

1. Size the line. The CFPB’s HELOC booklet explains the method. The lender takes a percentage of the home’s value and subtracts what you still owe on the first mortgage.

Here is the same idea in plain percentages. Say your first mortgage equals 55% of the home’s value and you have a 720-plus profile. On a primary residence, the network ceiling at that tier is 90% CLTV, which leaves room equal to 35% of the home’s value. Lower credit tiers get lower ceilings. The 90% figure exists only at 720 or better, so treat it as the top of the range, not the typical case. It also applies only to lines of $500,000 or less, since larger lines carry a lower cap, described next.

2. Pick the structure. On primary homes and second homes, Lendmire’s wholesale partners offer two structures. One has a 3-year interest-only draw followed by a 17-year repayment. The other has a 5-year draw followed by a 25-year repayment, which this article calls the longer-runway program. Investment lines use the 5-year structure only.

Lines run from $25,000 to $750,000. A line above $500,000 is for primary residences only, needs a credit profile of 700 or better (720 on the longer-runway program), caps at 75% CLTV rather than 90%, and requires a full appraisal.

3. Clear underwriting. Debt-to-income can run as high as 50%, and the lender reviews your file on the interest-only payment calculated on the maximum draw. Credit scores come from a single-bureau model keyed to the primary wage earner. The report must be no more than 90 days old at closing, and rescores are not allowed. Lines at or below $500,000 ordinarily use an automated valuation instead of a traditional appraisal, though you can request a full appraisal.

4. Draw and repay. At least 75% of the line is drawn at closing. Interest-only payments run through the draw period, and then the balance amortizes. Pricing floats the whole way and never converts to fixed. The CFPB notes that draw periods can run a decade in general. On this network they run three or five years. The same page warns that you could lose your home if you cannot repay.

5. Move the cash to the purchase. The lender on the new rental loan decides whether borrowed funds count toward your down payment, closing costs, and reserves. That answer varies by lender and program. Ask before you close the line, not after.

6. Repay. Once the draw period ends, the payment steps up as the balance amortizes. Plan for that jump when you set your exit.

A lump-sum home equity loan works differently. It pays out once and amortizes from day one. Because at least 75% of a network line is drawn at closing, it behaves a lot like a lump sum, but with floating pricing.

What Does a Line on a Rental Look Like?

A line on a rental is a standalone line in first or second lien position, secured by the property you already own. Its limits are the 70% CLTV ceiling, a 700 minimum credit score, and a $500,000 maximum, and it uses the 5-year draw and 25-year repayment structure.

Because the line stops at $500,000 and full appraisals begin only above that, an investment line sits in the automated-valuation lane. It commonly closes with no traditional appraisal. Eligible properties include single-family homes, 2-4 unit buildings, PUDs, townhomes, and condominiums, including non-warrantable ones. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned properties are not eligible.

Two structural limits catch people off guard. First, title must sit with you personally or in a revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title. That is the sharpest difference from a DSCR loan. If your rental is already deeded to an LLC, you need a vesting change or a different product.

Second, a borrower is limited to three lines, with combined exposure capped at $750,000 on the longer-runway program and $2,000,000 on the other. A borrower who owns more than 15 financed properties is not eligible.

Which Collateral Fits? A Side-by-Side Look

Both products carry floating pricing and at least 75% drawn at closing.

Where Do the Rules Break?

The general rule is that equity in one property can fund a down payment on another. These edge cases bend it.

Rental-use restrictions. Some lines restrict renting out the home that secures them. That matters for house-hackers and anyone planning to move out and keep the home as a rental. If the home becomes a rental later, it becomes an investment-occupancy file, which means tighter limits.

Freeze and reduction rights. A lender can generally freeze or cut a line if the home’s value falls or your finances worsen. A line you opened but did not draw can vanish before you use it. Draw before you go shopping for the purchase loan.

Undrawn availability is not cash. A purchase lender wants to see money, not open credit. Cash that has been drawn and has sat in your account is far easier to document.

LLC-titled rentals. A rental already held in an LLC cannot back a line. A DSCR cash-out refinance can often close in an LLC, subject to lender program eligibility.

Prepayment penalties on the purchase loan. DSCR loans often carry a prepayment penalty, so an early exit can be costly. If your plan is to buy with the line and refinance soon after, read that clause closely.

BRRRR timing. A floating-price line fits a buy, rehab, rent, refinance, repeat plan only if you can pay it down on a known schedule. The longer the balance sits open, the more the floating pricing works against you.

Credit history. A bankruptcy needs four years of seasoning from discharge or dismissal. Foreclosure history on investment files follows a seven-year path, and a deed in lieu, pre-foreclosure, or short sale follows a four-year path.

Ineligible property types. DSCR loans through the network do not cover manufactured homes (single- and double-wide), log homes, or barndominiums. The line programs exclude manufactured homes and log homes as well.

What Happens to Your Cash Flow?

Picture an investor buying a rental with a DSCR purchase loan at 75% LTV. The other 25% of the price, plus closing costs, comes from a line on the investor’s primary home. The rent clears roughly 1.2x on the new loan’s payment, so the DSCR lender sees comfortable coverage. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.

Look closer. The investor now carries two debts against one rent stream. The rent carries the first loan. The line’s interest-only payment sits on top of it and comes out of the investor’s other income. In effect the investor has financed close to 100% of the purchase, with floating pricing on the borrowed down payment.

Add the line’s payment, and the combined coverage across both debts is meaningfully thinner than the 1.2x the lender saw. A vacant month, a major repair, or a pricing move on the line can push the true picture below break-even.

Remember what DSCR measures. It compares rent to the property’s own payment (principal, interest, taxes, insurance, and any HOA dues). Clearing 1.00 does not mean positive cash flow, because repairs, vacancy, management, utilities, and capital expenses sit outside the calculation. Across the wholesale network, 1.00 is where select programs start, and stronger coverage opens better terms. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted.

Before you draw, run three tests:

• Rent drops, or the unit sits empty for a stretch.
• The line’s floating pricing moves against you.
• The draw period ends and the payment steps up to the amortizing level.

If the plan only works when nothing goes wrong, the line is too big.

Which Path Fits Your Goal?

This is where the choice gets practical. Match the tool to the job.

• You need a down payment for a first rental and want your cash cushion intact. A line on your primary home is the common route, but only if you can carry both payments through a bad stretch.
• You own a rental with real equity and want cash without touching your home. A line on that rental fits, within the 70% CLTV ceiling and the $500,000 cap.
• You want a larger cash-out and the rental is held in an LLC. A DSCR cash-out refinance tops out around 75% LTV on standard rentals, with about six months of seasoning as the common expectation. Short-term-rental collateral caps at 70% on cash-out.
• You are buying the rental itself. Most DSCR purchase files land at 75% to 80% LTV, with select high-leverage programs reaching 85% at roughly a 700-plus score. Reserves are commonly around six months of PITIA but vary by lender, leverage, and loan size. The complete DSCR loans guide covers the full picture.

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

Documents to Gather

Both paths ask for a similar core set:

• Government photo ID and your credit authorization.
• Your current mortgage statement on the property that secures the line.
• Homeowners insurance for that property.
• Proof of how title is vested, in your name or a revocable trust.
• Recent bank statements showing where the drawn cash sits.
• For a rental-secured line, lease and rent history for the property.
• For the DSCR purchase, the rental purchase contract and rent estimate.

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. The brokerage places files with select wholesale partners and is never the lender. An editable, illustrative calculator on the site can give you a rough sense of how the pieces fit together.

About Lendmire

Lendmire is a mortgage brokerage (NMLS# 2371349) arranging home equity lines of credit — primary-residence, second-home and investment-property lines — through a wholesale lending network in its 16 full-service states. Eligibility is determined by the lender on each file. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. NerdWallet

2. Experian

3. CFPB: HELOC Booklet

4. CFPB