The Quick Read: The provider that matters most is the one already holding your line, because a first-mortgage refinance usually needs that lender’s written consent to stay behind the new loan, or the line gets paid off or closed, and the new first-lien lender’s combined-leverage limit then caps what is possible.
- The new first-lien lender wants first position, so an open line must be subordinated, paid off, or closed.
- The existing line holder can say no, and that decision comes before any provider comparison.
- Combined leverage, meaning the new first plus the line against appraised value, sets the limit.
- A broker that shops several wholesale lenders can match the file to a program, but it cannot force consent.
- Investment-property lines on Lendmire’s network cap at 70% CLTV with a 700 minimum credit score, so the ceiling is lower than on a primary home.
Key Terms Defined
Lien position. The order in which recorded loans get paid from a sale. The oldest recorded lien sits first.
Subordination agreement. A signed document where the line holder agrees to stay behind a new first mortgage.
Re-subordination. A fresh agreement for the new first mortgage, because an older one was written for the old loan.
Combined loan-to-value (CLTV). The first mortgage plus the line, measured against appraised value.
Rate-and-term refinance. A refinance that replaces the first loan without adding new cash to the debt.
Cash-out refinance. A refinance that raises the loan balance. Paying off a line inside the new loan often lands here.
How large a line the equity supports.
An equity line is sized by combined loan-to-value, occupancy, and credit — not by rental coverage. Switch the occupancy or the credit band and the ceiling moves with it.
Investment-property lines require a 700 minimum credit score; second-home lines start at a 640 minimum and primary-residence lines at 600, and the combined-LTV ceiling steps down as the credit band drops on primary-residence and second-home lines and holds on investment-property lines; the line cap steps down on primary-residence lines and holds at every tier on investment-property and second-home lines.
A debt-to-income ratio above 45% requires 680+ credit. Profiles under 640 are limited to single-family homes. At least 75% of the approved line is drawn at closing. Ceilings, floors, and caps update from Lendmire’s centralized guideline source.
Line estimate
Illustrative estimate only — not a quote, Loan Estimate, approval, or commitment to lend. The rate is an editable assumption; equity-line pricing is variable through both the draw and repayment periods and never converts to fixed. Occupancy and credit drive the ceiling together: an investment property tops out at 70% combined LTV (minimum credit 700, line cap $500,000); a second home tops out at 90% combined LTV (minimum credit 640, line cap $500,000), with the ceiling stepping down as the credit band drops (the cap holds at every tier); a primary residence tops out at 90% combined LTV (minimum credit 600), and its $750,000 maximum line is available only at 75% combined LTV or below with a 700-or-better credit profile (720 on the longer-runway program) and a full appraisal. Lines above $500,000 require a full appraisal. Credit, debt-to-income, property type, and full underwriting review all affect the final line.
Why does an open HELOC get in the way of a refinance?
An open line sits on title behind your first mortgage. When the refinance pays off the old first, the line moves up to first position, and the new loan would record behind it.
Nolo explains this shift: when the first mortgage is paid off, the second moves up and the new mortgage becomes the second. It also says conventional lenders will not refinance a first mortgage unless they are guaranteed first position.
That is why a list of top HELOC providers does not answer the question. The provider list matters for the line you open next. The line you already have is controlled by one lender, and that lender decides.
A zero balance does not change this. The line is recorded on title whether or not you have drawn on it. Unless it is subordinated or closed, the refinance lender sees a lien ahead of its own.
How underwriting treats the open line, step by step
Here is the sequence on a typical file.
1. Before the refinance. The old first mortgage is in first position. The line is in second.
2. The refinance pays off the first. The payoff releases the first lien. The line becomes the oldest lien of record.
3. The request goes to the line holder. The borrower or the new lender asks for subordination. The new lender often wants documentation from the line holder as part of the file.
4. The line holder reviews leverage. Many line lenders apply a CLTV threshold when deciding whether to subordinate, as Bills.com notes. Expect an appraisal-based check against the new first loan amount.
5. The new first lender runs its own test. It looks at the new first plus the line against appraised value. Many lenders measure the line at its full limit rather than its drawn balance, so confirm that convention with the lender before you size the loan.
6. The agreement is signed and recorded. The signed subordination has to be in place before closing. It is typically recorded alongside the new mortgage.
Subordination changes lien priority. It does not change the terms of the line itself. Wikipedia notes that holders of second mortgages often prefer to subordinate over releasing the lien and re-filing, because of the added cost and priority problems.
What are the three paths?
Every file with an open line lands in one of three structures.
| Path | What changes | Who must consent | Main risk |
|---|---|---|---|
| Keep and subordinate | Line stays open behind new first | Line holder and new first lender | Line holder refuses |
| Fold the line into the new loan | One new first loan, line closed | New first lender only | Often treated as cash-out |
| Pay off and close separately | Line cleared before closing | No one else | Needs cash on hand |
The first path leaves the line in place, so the borrower keeps its existing terms and the new first mortgage simply takes first position ahead of it. The second path removes the consent problem. The new loan is usually priced as a cash-out refinance, even when you receive no money at the table, so confirm the treatment against the program guidelines before you commit.
The third path is simple and needs cash. Paying off the line out of pocket is often the cleanest result for a small balance.
As a general matter, a small line next to a large new first favors subordination. A large line next to a modest first favors consolidation. The right answer depends on the file.
How combined leverage limits each path
Say you own a rental where the new first is sized near the top of what a lender allows. Then there is little or no room left for the line. Subordination may be unavailable even if the line holder is willing, because the combined number exceeds the new lender’s cap.
On Lendmire’s network, DSCR cash-out refinances top out around 75% LTV on standard rentals. Short-term rental collateral steps down to 70% on a cash-out. These are select-program ranges, subject to lender guidelines.
Rate-and-term refinances are generally easier to subordinate, since the first lien does not grow. That is common practice, not a rule, and each line holder sets its own policy.
Where the general rule breaks
Most explanations treat the open line as one problem. These edge cases show where it splits.
The line holder refuses. The Ask CFPB answer says HELOC lenders can refuse, and that you may then need to pay off the line to refinance. Payoff or closure is the fallback.
The line is at zero. Investors sometimes keep an unused line as backup capital. An open line still blocks the refinance until it is subordinated or closed. Some borrowers close the line and apply for a new one after the refinance, which only works if the equity supports it.
The line comes from a different lender than the refinance. Every lender involved has to agree to the new order of liens. The more parties, the more places a file can stall.
The line was already subordinated once. An older agreement was written for the old first mortgage. It usually does not carry over to the new loan, so plan on a fresh agreement.
The property sits in an LLC. Lines on Lendmire’s network cannot be held by LLCs, corporations, partnerships, or irrevocable, blind, or land trusts. Title must be with the individual borrower or a revocable living trust. A property already deeded to an LLC needs a vesting change first, or a DSCR cash-out instead.
The property type is out. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned properties are not eligible on these lines.
Reverse sequence. If you plan a DSCR first-lien loan and then a line, read the first-lien note before you sign. It may restrict added liens. Lendmire’s complete DSCR loans guide covers how the first-lien side is built.
What does the line cost the DSCR math?
A line that stays open adds a payment and added leverage to the file. DSCR compares rent to the full monthly obligation on the property, so a line secured by that property can pull the coverage ratio down.
A coverage ratio near 1.00 means rent just covers the obligation. Clearing 1.00 is not the same as positive cash flow, because repairs, vacancy, management, utilities, and capex sit outside the calculation.
On most files, 1.00 is where select programs start, and stronger ratios open better pricing and leverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. The exact treatment of an open line in the ratio comes from the individual lender’s guidelines, so ask before you size the loan.
An investor weighing a cheap first mortgage against a single cash-out loan should test both on the same property. Run the coverage ratio on the structure with the line in place and again on the structure with the line folded in. Then compare the combined leverage on each.
For a related look at the sequencing from the other direction, see Lendmire’s piece Top HELOC Providers When Subordinating Behind an Existing First Mortgage. For the single-loan route, see which cash-out refinance program fits when a HELOC is already on the first mortgage.
How do you pick a provider for this situation?
The best program for your situation depends on the property type, credit profile, leverage need, and documentation. No single provider ranking can settle that.
Lendmire is a mortgage broker. It works with select wholesale HELOC lenders and matches a file to a program. It does not lend, and it cannot make a current line holder consent to anything.
Start with the lender that holds your line, and ask these questions before you apply anywhere else:
- Does this lender subordinate to a new first mortgage?
- What CLTV limit applies to the subordination request?
- Is the line measured at its limit or its drawn balance?
- What paperwork does the new first lender need from you?
- Are there fees for the agreement?
If the answers are unfavorable, a broker can look at replacement lines and first-lien structures together. The lenders that write investment lines depend on credit, leverage, and property type. Programs change, and every file is underwritten individually.
What the network’s investment lines look like
Where occupancy matters, the numbers differ sharply. On an investment property, lines on Lendmire’s network cap at 70% CLTV, with a minimum credit score of 700 and a maximum line of $500,000. Investment lines use a 5-year interest-only draw followed by a 25-year repayment period. These specifics are subject to lender guidelines and a full review of property, leverage, and credit.
On primary residences, the ceiling reaches 90% CLTV, but only with a 720 or better credit profile and a line up to $500,000. A line above $500,000 is for primary residences only and needs 700 or better (720 on the longer-runway structure), a 75% CLTV cap, and a full appraisal.
A few other mechanics matter for the refinance picture:
- The line is a standalone loan in first or second lien position.
- At least 75% of the line is drawn at closing, so a line opened alongside a refinance does not sit at a zero balance.
- Pricing floats and does not convert to fixed.
- Debt-to-income runs up to 50%, qualified on the interest-only payment at the maximum draw.
- Lines at or below $500,000 ordinarily run automated valuation, though a higher CLTV may call for a secondary valuation.
- A borrower can hold up to three lines, and owning more than 15 financed properties makes a borrower ineligible.
- Availability is limited to Lendmire’s 16 full-service states, which is narrower than its DSCR footprint of 41 markets, including Washington, D.C.
All of this is subject to lender guidelines and full file review. It is not a commitment to lend.
Common mistakes on these files
Four mistakes come up on open-line refinances.
Assuming consent is automatic. The line holder can refuse, and the refinance plan has to include a fallback.
Sizing the new first without the line. Combined leverage counts both loans. A first sized to the cap leaves nothing for the line.
Forgetting that payoff changes the loan type. Folding the line into the new loan often turns a rate-and-term refinance into a cash-out.
Ignoring title. An LLC-held property cannot take a line on this network until vesting changes.
Frequently Asked Questions
Can I refinance my first mortgage while a HELOC is open?
Yes, but the line must be subordinated, paid off, or closed. The new first lender wants first position, so the line holder either agrees to stay behind the new loan or the line is cleared. The line holder can refuse, and then payoff is the fallback.
Does a zero balance make the line irrelevant?
No. An open line stays recorded on title whether or not you have drawn on it. It still has to be subordinated or closed before the new first mortgage can take first position.
Is a rate-and-term refinance easier than a cash-out when a line is open?
Generally yes. The first lien does not grow in a rate-and-term refinance, which gives line holders less reason to object. Each lender sets its own policy, so this is common practice rather than a guarantee.
What CLTV can an investment-property line reach on Lendmire’s network?
An investment-property line caps at 70% CLTV, with a 700 minimum credit score and a maximum line of $500,000. The 90% ceiling applies only to primary-residence and second-home lines at a 720 or better credit profile, never to investment lines. Every figure is subject to lender guidelines and full file review.
Can an LLC hold the line?
No. Lines on this network require title in the individual borrower’s name or a revocable living trust. A property held in an LLC needs a vesting change first, or a DSCR cash-out refinance may be the better route.
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. You can also call 828-256-2183.
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.
Get Started
Ready to find the right loan for you?
See your offer in seconds. No credit pull, no obligation.
Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
1. Nolo
2. Bills.com — Subordinate a HELOC to refinance
3. Wikipedia — Subordination agreement
4. Ask CFPB
This article is part of Lendmire’s HELOC & home equity loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Top Investment Property HELOC Providers for a Mortgaged Rental With a Fixed First · Top DSCR HELOC Providers for BRRRR Investors Funding the Rehab
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Disclosure information. Lendmire is a state-licensed mortgage brokerage under NMLS# 2371349. Lendmire is not a depository institution, direct lender, or financial advisor — all loans referenced are placed through wholesale lender partners and are subject to each lender's underwriting standards. This article is provided for general informational purposes and is not a commitment to lend, nor does it constitute financial, legal, or tax advice. Loan programs, terms, rates, and qualification standards change without notice and depend on borrower profile, property type, and the state in which the subject property is located. Equal Housing Opportunity provider. NMLS Consumer Access: nmlsconsumeraccess.org.