Top Investment Property HELOC Providers With a Solar Lien or an Unpermitted ADU

The Quick Read: No one lender is the answer for a rental with solar paper or an unpermitted unit, because the file’s outcome turns on what the solar instrument is, how the appraisal treats the unit, and how the property is titled. On the wholesale network Lendmire works with, an investment-property line is capped at 70% combined loan-to-value, requires a minimum 700 credit profile, and tops out at $500,000, all subject to lender guidelines and full file review. A recorded solar mortgage or a PACE balance uses up part of that 70%. An unpermitted ADU is usually given little or no value and no rent credit.

• A panel-only UCC-1 filing and a recorded solar deed of trust are different things, and lenders treat them differently.
• PACE sits ahead of the mortgage on the tax bill and generally has to be paid off.
• Collecting rent from an unpermitted unit does not make the lender count it.
• An investment line cannot be held by an LLC, so entity vesting is a gate before any of this matters.
• The right program depends on the file, which is why a broker that shops several wholesale lenders matters more than a ranked list.

Why a Ranked List of Providers Doesn’t Work Here

A ranking would mislead you. Investment-property equity lines are a narrow product, and each lender writes its own rules on solar liens and unpermitted space. The lenders that will take your file depend on the property type, credit profile, combined leverage, how the solar is financed, and what the appraisal says about the ADU.

Lendmire is a mortgage broker, not a lender. It places files with select wholesale lenders and matches the scenario to the program that fits. That is the useful comparison for an investor: which lender’s guidelines tolerate your specific title and property facts, not which company has the loudest marketing. Home equity lines are available through Lendmire in 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 DSCR footprint.

What an Investment-Property Line Looks Like on This Network

Across the network, an investment-property line is a standalone line in first or second lien position. Parameters below are typical guidelines, not commitments, and every file is reviewed individually.

• Leverage: 70% CLTV is the ceiling on an investment property. A higher score than the minimum does not raise that ceiling.
• Credit: 700 is the floor on an investment line, and the score model keys off the primary wage earner.
• Line size: up to $500,000 on an investment property. Lines above that size are limited to primary residences.
• Structure: a 5-year interest-only draw followed by a 25-year fully amortizing repayment. At least 75% of the line is drawn at the start.
• DTI: 50% maximum, qualified on the interest-only payment calculated on the maximum draw.
• Valuation: because the line caps at $500,000, an automated valuation is the usual route and a traditional appraisal is commonly not ordered. A borrower can still request a full appraisal.
• Exposure: a borrower is limited to three lines, and an owner of more than 15 financed properties is not eligible.
• Property types: single-family, 2-4 units, PUD, townhome, and condominium, including non-warrantable condos. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural zoning are not offered.

One consequence for this topic: an automated valuation does not walk the property. It cannot see an ADU the way an appraiser would. That helps in some files and hurts in others, so ask what valuation method the lender will order before you assume anything about the ADU.

Few banks lend on investment-property equity at all. One BiggerPockets thread has a banker saying only one or two lenders still offer them, at 60-65% LTV. That is a market-wide statement, not this network’s figure. On this network the investment ceiling is 70% CLTV. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.

How Underwriting Treats a Solar Lien, Step by Step

“Solar lien” is not one thing. The instrument decides the outcome, and the underwriter’s first job is to classify it.

Most solar loans and leases produce a UCC-1 financing statement, not a mechanic’s lien, according to ASCLP. A UCC-1 is a public notice that a lender has a security interest in the panels. A mechanic’s lien usually appears only if the installer or its subcontractors went unpaid. ASCLP’s examples are from Arizona, so read it as an illustration of the concept, not national law.

The process runs in this order:

1. Pull a title report and run a UCC search. The state UCC database and the county records can show different things. A panel-only UCC-1 may not appear in a county title search, so check both.

2. Classify each solar item. It will be a recorded solar deed of trust, a county fixture filing, a state UCC-1 on equipment only, a PACE assessment on the tax bill, or nothing because the system is owned outright.

3. Count the CLTV effect. CLTV is all liens divided by value. A recorded solar mortgage or PACE balance uses equity the new line would otherwise reach.

4. Gather the paper. That means the solar contract, the loan or lease agreement, the UCC-1 and any fixture addendum, and the title report. For PACE, add the PACE agreement, the tax statement, and a payoff statement from the administrator.

5. Clear it if the lender requires it. A financed UCC-1 or fixture filing is cleared by payoff and then a UCC-3 termination. The filing does not disappear on payoff alone. PACE clears only by payoff.

6. Find out who decides. Treatment varies by lender. Some lenders tolerate a panel-only filing, and some programs treat any solar lien as ineligible. The lender’s guideline governs, not a general legal rule.

A fixture filing is a UCC-1 with an addendum recorded in the real property records, as Pender & Coward explains in a Virginia-specific post. That recording is why some reviewers treat it as a claim on the real estate and not just the panels.

For contrast, the Freddie Mac Guide separates a panel-only filing from one that creates a lien on the real estate. The real-estate lien must be subordinated or released, while a panel-only filing does not require subordination. That is an agency rule for agency loans. Non-QM and home equity programs set their own rules, and many are stricter.

PACE Is the Different Case

A PACE assessment is a government tax lien, not a financing statement. PACE is generally treated as a super-priority first lien, which gives it priority over a first-lien mortgage at a tax sale or foreclosure sale. Treat this as a description of the concept rather than a statement of current policy, since the rules around PACE have changed over time.

In practice a lender sees PACE as senior to its own position. A UCC-3 does not clear it, since it is not a UCC filing. Expect a payoff requirement and a payoff statement from the administrator before the deal works forward.

How Underwriting Treats an Unpermitted ADU

The appraisal is the gate. The appraiser classifies the unit as legal, legal non-conforming, or unpermitted, and reports its square footage separately from the main house. For one-to-four-unit investment properties, the rent schedule and operating-income forms are Form 1007 and Form 1025.

The usual result is harsh. GatherADU notes that appraisers must flag unpermitted structures and most will not assign them value, and that in some cases the unit can lower the appraisal because lenders view it as a liability. Schumacher Appraisal adds that unpermitted additions bring minimal market value and often cannot be counted as finished square footage. Some lenders refuse such loans, and others cap the value at the legal size. Its examples come from the Bay Area.

Two practical points follow:

• Value: the unit gets little or no credit, so the main house has to carry the file alone on CLTV.
• Rent: actual rent collected does not override the appraisal. Deposits and a signed lease for the ADU do not make the lender count that income.

Fixes, in order of reliability: legalize the unit and finalize the permit before the valuation, ask the lender about permit status before ordering anything, or leave the unit out of your numbers entirely. A legal non-conforming unit is a different classification from unpermitted, and the appraisal can treat it differently.

When Both Problems Land on One File

The two defects pull CLTV in the same direction. The solar item uses up equity that would otherwise be available, and the ADU lowers the value the liens are measured against.

Run the numbers on a hypothetical rental, in percentages only. Say the first mortgage sits at 55% of the value you expect. A recorded solar deed of trust adds 8 points, so existing liens are 63% and the 70% investment ceiling leaves about 7 points of room. Now suppose the ADU made up a tenth of the value you assumed, and the valuation credits none of it. The same liens now measure against a smaller value, so the ratio rises and the room shrinks, possibly to nothing. Those inputs are modeled assumptions, not market data.

The order of operations matters:

1. Find out what the solar paper actually is.

2. Decide whether to legalize the ADU or leave it out of the numbers.

3. Only then request a valuation, because a valuation run on bad assumptions is wasted effort.

Where the General Rule Breaks

• Lease or PPA. The provider usually files a UCC-1 on its own equipment and the borrower does not own the panels. The lease payment may still count as a debt in the DTI calculation, which is capped at 50% on this network.
• Unpaid installer. A mechanic’s lien from an unpaid installer is a real lien on the home. It is rare when a finance company already paid the installer.
• Stale filings. A financed UCC-1 typically lasts about five years unless continued. A lapsed filing is not the same as a cleared one, so confirm with a UCC-3 or a title company.
• Payoff without a termination. Paying the solar loan off does not remove the filing until the UCC-3 is filed and confirmed.
• Entity title. An investment line must be held by the individual borrower or an inter vivos revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title. A property already deeded to an LLC needs a vesting change first, or a different product. Check this before spending money on title work.
• Listed property. A property listed for sale, or listed within the past 60 days, is ineligible in NC, PA, TN, TX, and WA.
• Excluded property types. Manufactured homes, log homes, and co-ops are not offered, and an ADU built as one of these does not fix that.

When the Line Doesn’t Fit: the DSCR Cash-Out Route

If the property sits in an LLC, the equity you need is above $500,000, or the solar and ADU issues push the CLTV past 70%, a DSCR cash-out refinance may be the better tool. It qualifies primarily on property-level rental income covering the payment, subject to lender guidelines, instead of on your DTI. The complete DSCR loans guide covers the basics.

Typical network ranges for a standard rental cash-out: up to 75% LTV, about 6 months of seasoning, and a credit profile around 660 on most programs, with 700 or more opening the strongest tiers. A 1.00 coverage ratio is where select programs start, while a separate select-lender path goes below 1.00 with leverage and terms adjusted. Reserves vary by lender, leverage, and loan size.

The coverage ratio compares rent to the full monthly obligation (principal, interest, taxes, insurance) and nothing else. Clearing 1.00 does not mean positive cash flow, since repairs, vacancy, and management sit outside it. An unpermitted ADU’s rent is usually excluded from the rent the lender uses, and a PACE assessment still raises the tax line.

What the Decision Looks Like in Practice

Work the file in this order. First, confirm how the property is titled. Second, classify the solar instrument from the title report and UCC search. Third, decide what to do with the ADU: legalize it or exclude it. Fourth, calculate combined leverage against the 70% ceiling using only the value you expect the valuation to credit.

Cost is part of the choice. A second lien with floating pricing on interest-only draws can leave the blended cost of borrowing worse than your existing first mortgage, and a line adds to your debt load because the rental is the collateral, as Benzinga notes in a general explainer.

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. Call 828-256-2183 to start.

Key Terms Defined

HELOC: a revolving line of credit secured by the property, drawn as needed up to a limit.

CLTV: combined loan-to-value, meaning all liens on the property divided by its value.

UCC-1: a public notice that a lender holds a security interest in specific property, such as solar panels.

UCC-3: the filing that terminates or amends a UCC-1, required after payoff.

Fixture filing: a UCC-1 with an addendum recorded in the real property records.

PACE: a property-assessed clean energy assessment collected through the tax bill, with priority over a first mortgage.

PPA: a power purchase agreement, where the provider owns the panels and the borrower buys the power.

ADU: an accessory dwelling unit, such as a garage conversion or backyard unit.

DSCR: debt service coverage ratio, rent divided by the monthly principal, interest, taxes, and insurance.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage brokerage serving homeowners and real estate investors in its 16 full-service states. Home equity lines of credit are arranged through wholesale lending channels; Lendmire brokers the line and the lender underwrites each application under its occupancy-based guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. BiggerPockets — HELOC on an investment property

2. ASCLP — When Solar Panel Agreements Go Wrong

3. Pender & Coward — What to Know About UCC Liens Before Going Solar

4. Freddie Mac Seller/Servicer Guide, Section 5601.4

5. GatherADU — How Appraisers Value a Property With an ADU

6. Schumacher Appraisal — Valuing Unpermitted Additions

7. Benzinga — HELOCs on Investment Properties