The Quick Read: The right program is the one whose rules fit your exact collateral, because a solar filing raises a lien-position question while an unpermitted ADU raises a valuation question, and a lender has to be comfortable with both before it offers any line against your property.
- A solar “lien” is usually a UCC-1 filing on the panels, not a mortgage on the house. Lenders still care where it sits and whether it gets cleared.
- An unpermitted ADU is not a lien problem. It is an appraisal problem, and the unit’s value and rent may simply not count.
- On an investment property, the network ceiling is 70% CLTV with a 700 minimum credit score, and the line tops out at $500,000.
- Lines are written to individuals or revocable trusts. A property deeded to an LLC needs a vesting change or a different product.
- Solve the title question first, then the appraisal question, then pick the program.
What “Best” Actually Means Here
Nobody can hand you a ranked list. The best program for your situation depends on the lien type, how the appraisal treats the extra unit, how the property is titled, and your credit profile.
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.
Lendmire is a mortgage broker, not a lender. It places HELOC files with a network of wholesale lenders and matches the scenario to the program that fits. That matters because lenders differ on three things that hit this exact situation:
1. How much solar debt they tolerate, and whether they want it paid off or subordinated.
2. Whether they lean on an automated value or order a full appraisal.
3. How they treat space that has no permit.
Here is the part most borrowers miss. Solar and the ADU don’t compete. They are two separate gates, and your file has to clear both.
Key Terms Defined
CLTV (combined loan-to-value): Every loan secured by the property, added together, divided by the property’s value. The new line counts toward it.
UCC-1: A financing statement a solar company files to claim its panels as collateral. It is not a mortgage.
Fixture filing: A UCC-1 recorded in county land records with the property’s legal description. It becomes part of the title history.
UCC-3 termination: The form that removes a UCC-1 from the record. Paying off the loan does not clear the filing until this is filed.
PACE: A home-improvement financing program repaid as a tax assessment on the property.
Subordination: A written agreement where one creditor agrees to sit behind another in repayment order.
Unpermitted vs. illegal use: Unpermitted means work was done without a permit. Illegal use means zoning does not allow the use at all.
How Solar Shows Up on Title
The answer is that “solar lien” covers several different instruments, and lenders treat each one differently. According to the Arizona Center for Law in the Public Interest, most solar loans and leases create a UCC-1 financing statement, not a mechanic’s lien. That filing secures the panels, not the whole property. A standard UCC-1 is tracked at the state level, so a county title search may not show it.
A fixture filing is different. It lives in county land records, so it appears on the title commitment. A title-industry guide describes it as a closing requirement and lists three ways to clear it: payoff and termination, a lease or power-purchase transfer with the provider’s consent, or subordination to the new mortgage.
| Solar arrangement | What gets recorded | Typical lender action |
|---|---|---|
| Owned outright | Nothing | None |
| UCC-1 only | State filing on panels | Search, then clear or accept |
| Fixture filing | County record, on title | Payoff, release, or subordinate |
| Solar deed of trust | Recorded lien | Counts in CLTV; usually paid off |
| Lease or PPA | Often a UCC-1 or fixture filing | Buyout or provider-consent transfer |
| PACE | Tax assessment | Generally paid off |
Treat that table as a tendency, not a law. A bare state-level UCC-1 is tolerated by some lenders and not others.
Why Lien Position Decides a HELOC
A home equity line is underwritten to a specific lien position, either first or second. Anything recorded ahead of it changes the math. A fixture filing, solar deed of trust, or PACE assessment ahead of the line counts against your combined leverage and can cloud the position the lender thinks it is getting.
Here is the logic. A solar loan paid off at closing lowers combined leverage. That frees room under the cap. Leave it in place, and a lender may count it, ask you to pay it off, or ask the solar company to subordinate.
Two cautions:
- Paying the solar loan off is not the same as clearing the record. An Atlantic Title Firm explainer notes that the usual closing fix is a UCC-3 termination, and the filing stays until it is made.
- Solar company bankruptcy or an assignment to another company does not automatically remove the filing.
Run the UCC search alongside the title search. Do it before you order any appraisal.
PACE Is the One That Doesn’t Bend
PACE is the true exception. The CFPB defines it as home-improvement financing that results in a tax assessment on the borrower’s real property. That assessment generally holds priority over mortgages, and a private servicer cannot reorder a tax lien’s place in line.
So the practical answer on PACE is usually payoff. Subordination, which sometimes works for a solar company, generally does not work for a tax assessment. The American Bankers Association has told the CFPB that PACE liens make a property harder to sell or refinance. A lender reading your title report will see the same thing.
Federal ability-to-repay requirements for PACE lenders address how PACE is underwritten. They do not turn the assessment into an ordinary lien. Don’t assume they help you clear one.
The Unpermitted ADU Is a Valuation Problem
An unpermitted ADU rarely creates a lien. It creates a collateral question. The appraiser reports the unit’s legal status and looks for comparable sales, and the lender decides whether any value or rent gets credited.
Plan for the conservative outcome. The unit may add nothing to value. Its rent may count for nothing. If the unit is excluded, the collateral shrinks, and so does your borrowing room.
Two details matter:
- Unpermitted is not the same as illegal. Some places have no permit process, and zoning may allow a unit even when permits are missing. An appraiser discussion separates unpermitted work from legal non-conforming and illegal use, and that distinction drives how the unit gets reported.
- Unit count matters. Some lenders limit how many ADUs they will recognize, or want a conversion.
Rent on an unpermitted unit usually cannot be relied on. Underwrite the property on the main unit’s rent plus whatever the appraiser supports.
Where the Appraisal Gets Decided
Valuation method is where programs diverge most on this issue. On this network, lines at or below $500,000 ordinarily run an automated valuation with no traditional appraisal. A higher CLTV may require a second valuation. You can also ask for a full appraisal in any case. Every line above $500,000 requires one.
An automated value can miss the ADU entirely. It also can’t report on legal status. That can help or hurt. It may sidestep the ADU debate, but it may also overstate value if the lender later learns of the unit.
A full appraisal is where the ADU gets reported. If you believe the ADU adds real value and has a defensible legal path, ask for the full appraisal and expect the lender to weigh it conservatively. Small residential income property reports (Form 1025 for 2–4 units) and single-family rent schedules (Form 1007) are the forms that evidence rent. The appraiser still reports unpermitted space as unpermitted.
What This Network’s HELOC Programs Allow
These are program parameters on select wholesale lenders in Lendmire’s network, subject to lender guidelines and full file review. They are not guarantees. Availability is limited to Lendmire’s 16 full-service states: AL, CA, CO, FL, GA, IN, MI, MT, NM, NC, OH, PA, TN, TX, VA, and WA. That is narrower than the 41-market DSCR footprint.
Ceilings depend on occupancy. Read the row that matches your property.
| Occupancy | Max CLTV | Min credit | Max line |
|---|---|---|---|
| Investment property | 70% | 700 | $500,000 |
| Second home | 90% at 720+ | 640 | $500,000 |
| Primary residence | 90% at 720+ | 600 | $500,000 at 90% CLTV; $750,000 at 75% CLTV, 700+ (720 on the longer-runway program) |
The 90% figure exists only at a 720-or-better credit profile, and only for primary residences and second homes. On an investment property, 70% is the ceiling. No tier sits above it.
Other terms that matter for this scenario:
- Structure: a standalone line in first or second lien position. Investment lines run a 5-year interest-only draw followed by a 25-year repayment. Primary and second-home lines can also use a 3-year draw with a 17-year repayment.
- Draw at closing: at least 75% of the line is drawn at closing.
- Line size: from $25,000, with a Michigan floor of $10,000. A line above $500,000 is primary-residence only.
- Debt-to-income: 50% maximum, 45% for scores from 600 to 679.
- Exposure: up to three lines per borrower, and a borrower with more than 15 financed properties is not eligible.
- Property types: single-family, 2–4 units, PUD, townhome, and condominium, including non-warrantable. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned property are not offered.
A bankruptcy needs 4 years of seasoning from discharge or dismissal. Foreclosure history is handled differently by each program, and on investment files follows a 7-year and 4-year seasoning path.
The Combined Scenario: Two Gates, One Smaller Line
Run the numbers on a rental valued at 100 units. Percentages are used here so no dollar figure stands in for a real deal. These are modeled assumptions, not market data.
Say the first mortgage equals 45% of value, and a solar balance equals 8% of value. The investment ceiling is 70% CLTV.
- Everything counts: 70 minus 45 minus 8 leaves room equal to 17% of value.
- The appraiser excludes the ADU, and value drops to 90 units: the cap becomes 63 units. Subtract 45 and 8, and you have 10 units of room.
- The solar balance is cleared as well: 63 minus 45 leaves 18 units.
So the line can shrink twice. The ADU cuts value, and the solar filing eats room. Clearing the filing recovers most of what the ADU cost you.
Remember also that at least 75% of the line is drawn at closing. Don’t open a line sized for room you can’t use.
Which Route Fits Your Situation?
| Your situation | Likely route |
|---|---|
| Solar owned, ADU permitted | Apply as-is |
| UCC-1 only, ADU unpermitted | Search, then apply with full appraisal |
| Fixture filing or solar deed of trust | Clear or subordinate first |
| PACE assessment | Pay off before applying |
| ADU is illegal use under zoning | Legalize first, or exclude the unit |
| Property deeded to an LLC | Vesting change, or DSCR cash-out |
The titling row is the sharpest difference. LLCs, corporations, partnerships, and land or irrevocable trusts cannot hold title on these lines.
When the HELOC Is the Wrong Product
A line keeps your existing first mortgage. That is its charm, and it is also why it is narrow. It can’t pay off a problem filing and restructure the whole lien stack the way a refinance can.
For a rental held in an LLC, with a fixture filing and an unpermitted unit, a HELOC is probably the wrong tool. A cash-out refinance can pay off the solar debt from proceeds and doesn’t care how the property is titled. Across most programs in the network, a DSCR cash-out refinance tops out around 75% LTV, with about 6 months of seasoning commonly expected, subject to lender guidelines. DSCR financing qualifies primarily on property-level rental income covering the payment. That helps when your personal income is hard to document. The tradeoff is that an unpermitted unit’s rent still may not count toward coverage. Read Lendmire’s complete DSCR loans guide for how that coverage test works.
Also remember that DSCR compares rent to the full payment only. Clearing it is not the same as positive cash flow. Repairs, vacancy, and management sit outside the calculation.
What to Prepare Before You Talk to a Lender
Pull these first:
1. A title report, plus a UCC search at the state level.
2. The solar contract, lease or PPA, and any amendments.
3. The UCC filing itself, so you know whether it is a fixture filing.
4. Permit history for the ADU, and any zoning letter.
5. Current leases, and proof of how the property is titled.
6. Your current first-mortgage statement.
Tell the solar provider early. Removing a filing temporarily is easier when they know it is coming. Verify any promised timing yourself.
Legalizing the ADU is the cleanest long-term fix, though cost and feasibility vary by jurisdiction. Once the unit is permitted and rented, the file looks very different.
Mistakes That Cost Borrowers an Appraisal Fee
- Ordering the appraisal first. Run the title and UCC search first. Appraisal fees are wasted when the property fits the wrong program.
- Counting ADU rent. A tenant in place does not make the rent usable.
- Assuming paid-off means cleared. Confirm the UCC-3.
- Treating PACE like a solar loan. It is a tax assessment, and it rarely subordinates.
- Assuming every bank writes rental lines. Many don’t. A broker shops several wholesale lenders, which is the point.
Frequently Asked Questions
Can I get a HELOC with a solar loan on my rental?
Often yes, but the lien type decides. A solar loan with only a UCC-1 may be accepted or cleared at closing. A fixture filing or recorded solar deed of trust usually has to be paid off, released, or subordinated. On an investment property, the network ceiling is 70% CLTV, and any solar balance counted in that figure reduces your room.
Does an unpermitted ADU disqualify me?
Not automatically. It usually changes the collateral picture instead. The appraiser reports the unit’s legal status, and the lender may exclude its value and rent. A unit that zoning prohibits outright is a harder problem than one that is merely missing permits.
Can the new line pay off the solar loan?
Generally yes, if the lender allows it and the payoff results in a UCC-3 termination. Remember that at least 75% of the line is drawn at closing, so size the line with that in mind. Paying off the debt also lowers your combined leverage.
My property is in an LLC. Can I still use a HELOC?
No. These lines require title held by the individual borrower or a revocable living trust. An LLC-titled rental needs a vesting change, or a DSCR cash-out refinance instead, depending on program guidelines.
Is PACE treated like other solar financing?
No. PACE is a tax assessment that generally sits ahead of mortgages, so expect a payoff requirement. It is the least flexible item on this list.
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.
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. Arizona Center for Law in the Public Interest – Solar panel liens
2. Skyline Title Support – Clearing solar fixture filings at closing
3. Atlantic Title Firm – Solar panel liens and UCC fixture filings
4. CFPB – Residential PACE (Regulation Z) final rule
5. American Bankers Association – Letter to CFPB on residential PACE
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 HELOC Program With a Mortgage That Is Not yet Paid Off · Best HELOC Program to Buy a Second Home · Best Investment Property HELOC Program on a 2-4 Unit Rental
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
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- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Compliance and disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage broker and is not a direct lender, depository institution, financial advisor, or tax professional. Content in this article is general market analysis and educational information — not financial, legal, or tax advice for any specific situation. Lendmire does not guarantee loan approval; every transaction is subject to underwriting by the funding lender. Mortgage pricing and loan program guidelines are subject to change at any time without notice and vary by borrower characteristics, property type, and state regulations. Lendmire complies with Equal Housing Opportunity. Licensure verification: NMLS Consumer Access.