The Quick Read: The best program depends on whether the old first mortgage stays, the line stays open, or both get paid off, and for investors the cleanest paths are subordinating the line behind the new first, paying it off at closing, or rolling it into a debt service coverage ratio (DSCR) cash-out refinance that is reviewed on rental coverage.
- An open line sits in second position, and a new first-lien lender wants first position, so something has to give.
- Three paths work: subordinate the line, pay it off, or roll it into a cash-out refinance.
- Investment-property lines are tighter than most borrowers expect: 70% combined loan-to-value (CLTV) is the ceiling and 700 is the credit floor on Lendmire’s network.
- A zero balance does not remove the lien. Only a recorded release does.
- Pick the path by asking whether the old first mortgage is worth protecting.
Can You Refinance a First Mortgage While a HELOC Is Open?
You can, but the home equity line (HELOC) lender gets a vote. A HELOC is a revolving credit line secured by the property. If it sits behind your first mortgage and you replace that first mortgage, the line has to be dealt with before the new loan can close.
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.
Here is why. Liens rank by recording order. The first one recorded is first in line to be repaid. When you refinance, the old first mortgage is paid off and released. The HELOC, still recorded, moves up into first position automatically. The new loan lands in second.
Almost no new first-lien lender will accept that. So the file has to restore the order: the HELOC lender signs a subordination agreement, the line gets paid off and closed, or the line gets folded into a bigger new first loan.
Brokers see this tangle on investor files all the time. The investor drew the line for a down payment or a rehab, then later wants to refinance, and the line is still open and nobody planned for it. That is why the “best program” question is really a sequencing question.
Key Terms Defined
- HELOC: a revolving credit line secured by a property, usually with a draw period followed by repayment.
- First lien and second lien: the first lien is repaid first if the property is sold or foreclosed, and a second lien is repaid after it.
- Subordination agreement: a signed document in which a lender agrees to stay in a lower lien position than it otherwise would hold.
- CLTV (combined loan-to-value): all liens on the property, counting the full HELOC limit, divided by the property value.
- Cash-out refinance: a new first mortgage larger than the old payoff, with the extra going to you or to pay off other liens.
- DSCR: monthly rent divided by the monthly obligation (principal, interest, taxes, insurance, and any association dues).
The Five Structures at a Glance
Every refinance with an open line falls into one of five shapes. Each one answers a different question about the old first mortgage and the line.
| Structure | Old first | HELOC | Who must approve |
|---|---|---|---|
| Refinance and subordinate | Replaced | Stays open | HELOC lender |
| Refinance and pay off line | Replaced | Paid and closed | Payoff only |
| Cash-out rolls both together | Paid off | Paid off | New first lender |
| Refinance the line only | Untouched | Replaced | New line lender |
| Don’t refinance | Stays | Stays | No one |
The last row is a real option. If the old first mortgage is cheap and the numbers on the new loan don’t improve your position, leaving everything alone beats paying fees to change it.
Which HELOC Program Is Best When You Refinance With an Open Line?
There is no single best program. The best fit depends on the occupancy of the property, your credit profile, how much total leverage you need, and how the property is titled. Lendmire is a mortgage broker, not a lender. It places lines through select wholesale partners and matches your scenario to the program that fits.
Occupancy changes the answer more than anything else. These are typical guidelines on Lendmire’s network, subject to lender guidelines and full file review.
| Occupancy | Credit floor | Max CLTV | Max line |
|---|---|---|---|
| Investment property | 700 | 70% | $500,000 |
| Second home | 640 | 90% only at 720+ | $500,000 |
| Primary residence | 600 | 90% only at 720+ | $500,000 at 90% CLTV; $750,000 at 75% CLTV, 700+ (720 on the longer-runway program) |
On an investment property, the ceiling is 70% CLTV at both the 700 and 720+ tiers. No tier goes higher. The 90% figure belongs only to primary residences and second homes with a 720-or-better profile.
Other points matter for this refinance:
- Two draw structures exist on primary residences and second homes. One has a 3-year interest-only draw with a 17-year repayment. The other has a 5-year draw with a 25-year repayment. Investment lines run the 5-year draw and 25-year repayment only.
- The lines are standalone and can sit in first or second position. That flexibility matters when a refinance reshuffles the stack.
- At least 75% of the line is drawn at closing. Pricing floats and never converts to fixed.
- Personal debt-to-income applies. Maximum DTI is 50%, with 45% for scores from 600 to 679. That differs from a DSCR first mortgage, which looks at rent.
- Title is the sharp edge. The borrower must hold title individually or in a revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title, subject to lender program eligibility. A property already deeded to an LLC needs a vesting change, or a DSCR cash-out instead.
- Availability is narrower. Lendmire’s HELOC programs run in 16 states: AL, CA, CO, FL, GA, IN, MI, MT, NM, NC, OH, PA, TN, TX, VA, and WA. The DSCR footprint is wider, at 40 states plus Washington, D.C.
- Ineligible property types: manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural zoning are not offered.
Market surveys sometimes report that a few banks offer investment-property lines at higher leverage. That describes the broader market. The network figure for an investment line is 70% CLTV.
Keeping the Line: How Subordination Works
Subordination is the way to keep both the line and a new first mortgage. The sequence is simple. The old first mortgage is paid off, the line jumps to first position, and the new lender asks the HELOC lender to sign an agreement putting the line back in second. Bills.com walks through that sequence and notes that HELOC lenders often apply a CLTV test before approving.
Federal consumer guidance puts the power plainly. Ask CFPB explains that a HELOC lender may need to approve the refinance and can refuse, and that you may then have to pay the line off. The refinance lender cannot override that decision.
A few points shape how this goes:
1. Subordination changes priority only. It does not change the line’s limit, terms, or pricing.
2. The HELOC lender looks at its own risk. A larger new first mortgage means less equity behind its line. That is why subordination is typically harder on a cash-out than on a rate-and-term refinance.
3. Expect paperwork and possibly a fee. Some lenders charge for the review. Title and recording costs follow.
4. The agreement is recorded with the new mortgage. That is how the public record shows the new loan has priority.
5. Junior lenders usually prefer this to the alternative. Wikipedia’s summary of subordination notes that a junior holder generally prefers to subordinate rather than release and re-file, because of cost and priority problems.
When the HELOC Lender Says No
A refusal is not the end of the file. It narrows the choices to payoff or a bigger new first loan.
The first fix is cash. If you have the funds, pay the line down and close it before closing. The second is to use refinance proceeds to pay it off, which means the new loan must be large enough to absorb it. The third is to restructure the refinance as a cash-out that clears both liens at once.
Before closing the line, check the old loan documents for early-closure charges. Some lines carry a penalty for closing within a set period. Reopening later usually means a new application and a new valuation. Weigh that cost against the refinance savings.
Rolling the Line Into a DSCR Cash-Out
A DSCR cash-out refinance can wipe out both liens in one move. The new first loan pays off the old first and the HELOC, and the property is left with one lien and one payment. It fits investors who own rentals in an LLC, because the loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. Personal DTI is not the test.
Here is how that typically looks across Lendmire’s wholesale network:
- Leverage: cash-out tops out around 75% LTV on standard rentals. On short-term-rental collateral, cash-out runs about 70%, with a 640+ score and roughly 12 months of hosting history expected.
- Seasoning: about 6 months of ownership is the common expectation.
- Coverage: 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Stronger ratios open better pricing and leverage.
- Credit: a 620 floor exists in parts of the network, most programs want around 660, and 700+ unlocks the strongest tiers.
- Loan size: up to $3,000,000 on standard programs (smaller balances available through select lenders). Above $2,500,000, the network generally holds to 30-year fixed structures.
- Reserves: commonly around 6 months of PITIA (principal, interest, taxes, insurance, and association dues). They vary by lender, leverage, loan size, and transaction type.
Two cautions apply. First, paying off a HELOC through a cash-out is generally cash-out treatment, and rules vary by program. Ask about seasoning and any delayed-financing exception early. Second, clearing 1.00 is not the same as positive cash flow. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities, and capital expenses sit outside the calculation.
For the full program picture, see Lendmire’s complete DSCR loans guide.
Paid Down, Closed, or Frozen: Not the Same Thing
A line with a zero balance is still a lien. It stays on the title until it is formally released. A new first-lien lender will treat it as open and require a recorded release or a subordination.
A frozen line is also still open. The lender may stop further draws but the lien and the credit limit remain.
A closed line is different, but only once you hold proof. Ask the HELOC lender for a written closure and make sure the title company records the release. Without that, the lien can sit on the record and surprise you at closing.
When a lender reviews combined leverage, it generally counts the full credit limit, not only the drawn balance. An unused line with a big limit still weighs on CLTV.
Order of Operations and Documents
The sequence matters more than any single fee. Work in this order:
1. Map the lien stack: first-mortgage balance, full HELOC limit, and property value.
2. Decide the path before anyone orders anything: subordinate, pay off, or cash-out.
3. Stop drawing on the line. A new draw mid-file changes the numbers.
4. Contact the HELOC lender for either a payoff statement or a subordination request.
5. Confirm the vesting. If the property sits in an LLC, a personal-name HELOC is not an option.
6. Confirm any early-closure or prepayment penalty on the old loans.
7. Close with the release or subordination recorded alongside the new mortgage.
Documents to gather: the current statements for both liens, the HELOC agreement, a lease or rent roll for rental coverage, proof of insurance, and entity documents if an LLC holds title.
A Worked Example: Combined Leverage as a Repeatable Method
Use percentages of property value and run the check yourself. These are modeled assumptions, not market data.
Step one: stack the liens. Say the first mortgage is 50% of value and the HELOC limit is 15% of value. Combined, that is 65% CLTV before any refinance.
Step two: test the HELOC path. An investment line has a 70% CLTV ceiling on the network. At 65%, there is room to keep the line, but a cash-out on the new first would erode it fast.
Step three: test the roll-in path. Suppose the line is fully drawn, so liens total 65% of value. A cash-out refinance on a standard rental, at up to 75% LTV, covers the payoff with room left over. The question then becomes coverage. Rent must clear the new, larger payment, with the ratio at or above 1.00 for many select programs. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
Step four: compare. If the old first mortgage is cheap, subordination protects it. If it is expensive, the roll-in cleans up both liens. The decision turns on the old loan, not the line.
Which Structure Fits Which Investor?
| Your situation | Likely fit |
|---|---|
| Cheap old first, line is small | Subordinate and keep both |
| HELOC lender refuses | Pay off the line, then refinance |
| Expensive old first, large line | Roll both into DSCR cash-out |
| Property in an LLC | DSCR cash-out, not a personal-name line |
| Refinance savings are thin | Leave everything alone |
| Line is near the end of its draw period | Roll in or pay off before repayment starts |
Common Mistakes That Derail These Files
- Assuming the new lender will handle it. The refinance lender can only ask. The HELOC lender decides.
- Counting only the drawn balance. Leverage math uses the full limit.
- Treating a zero balance as a closed line. Only a recorded release clears the lien.
- Drawing on the line mid-file. It moves the numbers and can sour a pending approval.
- Ignoring early-closure penalties. The cost of closing can erase the refinance savings.
- Forgetting title. Personal-name lines and LLC-owned rentals do not mix.
- Equating 1.00 coverage with profit. DSCR leaves out repairs, vacancy, and management.
Frequently Asked Questions
Do I have to close my HELOC to refinance my first mortgage?
Not always. If the HELOC lender signs a subordination agreement, the line can stay open behind the new first. If the lender refuses, you generally need to pay it off or roll it into a larger new first loan.
Does an unused HELOC still affect a refinance?
Yes. The lien stays on title until it is released, and lenders typically count the full credit limit toward combined leverage. A zero balance helps your payment but not your lien position.
Can I keep a HELOC if my rental is in an LLC?
Usually not on this network. Lines require title in an individual’s name or a revocable living trust. A property already in an LLC generally needs a vesting change or a DSCR cash-out instead, subject to lender program eligibility.
Is paying off a HELOC in a refinance treated as cash-out?
Often yes. Treatment varies by program, and seasoning rules can apply. Ask early about how your file will be classified before you commit to a structure.
What is the highest CLTV on an investment-property line?
On Lendmire’s network, an investment-property line tops out at 70% CLTV, with a 700 credit floor and a $500,000 maximum line. Higher figures reported across the broader market do not describe this network.
Ready to Compare Your Options?
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. It places files through select wholesale partners and is never the lender. Every figure here is subject to lender guidelines and full file review, and nothing above is a commitment to lend.
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.
Investors who want the broader program framework can review how DSCR loans work.
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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. bills.com: Subordinate HELOC to Refi
2. CFPB: Does a HELOC Affect My Ability to Refinance My First Mortgage Loan
3. Wikipedia: Subordination agreement
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: Best Investment Property HELOC Program to Open a Second Location · Best Investment Property HELOC Program for a Landlord With a Low First Mortgage · Best HELOC Program as a Backup Emergency Fund
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Required disclosures. Lendmire (NMLS# 2371349) operates as a licensed mortgage broker, not a direct lender or depository. The discussion in this article is general in nature and should not be relied upon as financial, legal, or tax advice — every investment scenario is unique and should be reviewed by a qualified professional. Any loan inquiry is subject to lender underwriting, and this article is not a commitment to lend or a guarantee of approval. Mortgage rates, loan terms, and program guidelines vary by borrower, property, and state, and may change without notice. Equal Housing Opportunity. Verify licensure at NMLS Consumer Access.