How Much a Refinance Costs When a HELOC Stays in Second Position

The Quick Read: The refinance itself costs what any new first-lien loan costs, and keeping the line behind it adds a consent step, a fee from the HELOC lender, and a heavier combined-leverage load. The HELOC lender can say no, so the cost is not fixed until that lender agrees.

• The new first-lien lender wants first position, so the HELOC lender must sign a subordination agreement.
• Costs split into ordinary refinance expenses and items that exist only because the line stays.
• Combined leverage and combined rent coverage often matter more than the subordination step itself.
• A paid-off line must be formally released, and a zero balance does not remove the lien.
• Eligibility depends on lender guidelines, the borrower, and the property.

Investors often price a refinance as one number. On a file with a HELOC behind the first, it is really three: the new loan, the junior lender’s consent, and the leverage effects of keeping a second lien. Each one can move the total.

Key Terms Defined

Lien position. The order in which recorded loans get paid if the property is sold or defaulted on.

Subordination agreement. A signed document in which the HELOC lender agrees to stay behind the new first mortgage.

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

HELOC. A line of credit secured by property that you borrow against, repay, and borrow again. The federal consumer-finance regulator’s HELOC brochure describes it as a revolving line secured by your home.

Equity. What the property is worth minus what is owed on it.

Why a Refinance Threatens Second Position

A refinance pays off the old first mortgage and releases its lien. The HELOC is then the oldest recorded loan, and by recording order it moves up to first. Nolo explains that the new lender won’t fund behind it, so it asks the HELOC lender to sign a subordination agreement. The HELOC lender usually agrees only when the property has enough equity to cover both loans.

Bills.com notes that most refinance lenders will not close without subordination. It also makes a point investors miss: lien position follows what is recorded, not the loan type. A HELOC is usually a second lien, but it can be a first if no first mortgage exists.

What Makes Up the Cost

The total has five parts. Some are paid on every refinance. Some exist only because the line stays.

No neutral public source publishes a dependable dollar range for the subordination fee, and the figure varies by junior lender. Treat it as one of the smaller lines on the file. Ask the HELOC lender for its fee in writing, and ask the title company whether it charges separately for handling the agreement. Consumer comments on Bills.com describe borrowers who were billed by both the title company and the HELOC lender, so an itemized list is worth requesting before closing.

The bigger costs are indirect. The new lender counts the HELOC in combined leverage. A higher CLTV can limit the loan amount or worsen terms. The line also keeps its own payment after closing, so you carry two obligations instead of one.

Where the DSCR File Changes

On a DSCR file, the second lien matters twice. Across Lendmire’s wholesale network, most programs read rent against the full monthly obligation. When a second lien sits behind the first, the test can become combined: rent has to cover both. Coverage is a ratio of rent to PITIA, and a second payment lowers it.

Here is where files go sideways. The investor sizes the new first loan on rent alone, then the lender adds the HELOC payment and the ratio drops. 1.00 is where select programs start, and stronger ratios open better terms and leverage. A second lien can push a file from comfortable to borderline. Some lenders in the network review sub-1.00 files, with leverage and terms adjusted.

Clearing 1.00 is also not the same as positive cash flow. DSCR counts rent against PITIA only. Repairs, vacancy, management, and utilities sit outside the calculation.

Cash-out files carry a tighter leverage ceiling. Across most of the network, a cash-out refinance tops out around 75% LTV, with roughly six months of seasoning expected. A cash-out grows the first-lien balance, and a bigger first makes the junior lender less likely to consent. Rate-and-term files at modest leverage are the easier ones. For the full program picture, see the complete DSCR loans guide. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.

What the HELOC Lender Checks

The junior lender is not obligated to agree. Practitioners report that it looks at combined loan-to-value, the line’s payment history, and the borrower’s credit. Some test CLTV against the full credit limit rather than the drawn balance. Treat that as a common lender practice, not a fixed rule.

Typical documents requested include the new loan terms, the new loan application, an appraisal and title work, and a signed authorization. Missing pieces stall the request. The cleanest files send the whole package on day one.

Consent gets harder when the new first is larger than the old one, when the line is fully drawn, and when the HELOC and new first sit with different institutions, since every party has to sign.

Edge Cases Where the Rule Breaks

Zero-balance line. An open line with nothing drawn still has a recorded lien. It needs subordination, or it must be closed and formally released. Skipping the release leaves a junior lien on title.

Small line, large new loan. Paying it off at closing can beat subordinating it. No consent is needed, and the new first becomes the only lien.

Rental collateral. Many HELOC lenders restrict or decline investment property, and the CFPB brochure notes that renting out a home may be prohibited by the terms of a line. On Lendmire’s network, an investment-property equity line caps at 70% CLTV and $500,000, with a 700 minimum credit score. That 70% applies to investment lines only. Primary-residence and second-home lines follow different tiers.

A line on your own home. A HELOC secured by your primary residence is not touched by a DSCR refinance on a rental, unless the rental secures it.

LLC title. These equity lines require the individual borrower or a revocable trust on title. LLCs and similar entities cannot hold title, whereas DSCR refinances often permit entity vesting, subject to lender program eligibility. A property already in an LLC needs a vesting change or a DSCR cash-out instead.

Lien covenants. A DSCR first-lien note may limit additional liens. Read it before assuming the line can stay.

The Investor Decision

Three paths exist, and the cost differs on each.

If the first mortgage on the property is a low-cost legacy loan, replacing the HELOC rather than refinancing the first may cost less overall. If the line is small, payoff usually wins. If you want the line open for future work, subordination is the price of that flexibility.

Order of operations matters. Ask the title company early which HELOC lender is involved and what its process needs. A consent request can sit waiting on the HELOC lender, and delays there can push back the rest of the closing timeline. For the mechanics of the request itself, Lendmire covers how to subordinate a second-position HELOC on a refinance.

If the HELOC lender refuses, the usual fallbacks are to pay the line off, shrink the new loan, or restructure. Each changes the cash you bring to closing.

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.

If you are weighing a home equity line against a cash-out refinance 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. Lendmire’s piece How Much a Standby HELOC Costs When You Never Draw on It covers the cost of keeping a line open without using 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. CFPB – HELOC brochure

2. Nolo – Subordination Agreement

3. Bills.com – Is a HELOC a subordinate lien?

4. Bills.com – Subordination fee