You found the house. There are panels on the roof. They are either an asset that quietly cuts your electric bill for the next two decades, or a long-term contract hiding under equipment you assumed came with the property. Which one depends on details that aren't visible from the curb. This is the buyer's playbook — work through it before you go under contract, finish it before inspection contingencies expire, and you will know exactly what you're inheriting.
Ownership type is the only question that matters first
Whether the system is owned, financed, leased, or in a PPA determines every other decision you make about this home. The four categories transfer in completely different ways and represent different obligations.
Owned outright. The seller paid cash, or paid off the loan. The panels are part of the home, like a built-in dishwasher. You inherit manufacturer warranties and production history. No contract, no payment, no third party. This is the cleanest version and adds the most documented value.
Owned with an active loan. The seller is mid-loan on a solar financing product (Mosaic, GoodLeap, Sunlight). The loan either gets paid off at closing or, rarely, is assumable. Read the documents. Some solar loans carry year-18 balloon payments if the original homeowner didn't apply their federal tax credit to principal in the first 18 months. Section 25D expired December 31, 2025, so 2026-installed systems had no credit to apply — that balloon is real and now your problem unless you renegotiate.
Leased or PPA. The seller doesn't own the panels; a solar company does. There's a 20–25 year contract, typically with 15+ years remaining. You assume it (credit check, $250–$500 transfer fee, roughly 2.9% annual escalator) or the seller pays the buyout before closing — $10,000–$40,000+ depending on system size and remaining term.
Hybrid lease-to-own. Some newer Section 48E structures start as a lease and convert to ownership at a defined point. You inherit partway through. Read the contract for the trigger and the terms.
What a UCC-1 fixture filing tells you about the deal
A UCC-1 on the property tells you the panels are not owned outright — the solar company or finance company is securing their interest in equipment attached to the home. It's a public lien filed with the county recorder, and it's how the company protects its asset on a leased or financed system.
For you as a buyer, the UCC-1 has three consequences. It shows up on the title search, so your title company will require a plan to resolve it before issuing title insurance. Your mortgage lender will see it and may want documentation on how the lien is being handled. And it must be either assumed (through your lease assumption) or terminated (through the seller's buyout) at closing.
A clean title search with no UCC-1 is strong evidence the system is owned outright. If one is filed, that's not a deal-killer — it's a fact that needs handling. Ask the title company directly: are there any UCC-1 fixture filings on this property, and who is the secured party? The secured party — installer, finance partner, or lease originator — is where you go for the contract documents and the payoff or assumption terms.
How to verify system age and the warranty residue you're inheriting
Verify the install date three independent ways — permit records, the original contract, and the monitoring portal's commissioning date — then match it against the warranty term on each component to see what residue actually transfers. Solar panels are warrantied to produce at 80–87% of original capacity at year 25. Microinverters typically carry 25-year warranties. String inverters and batteries are warrantied 10–15 years and almost always need replacement before the panels do.
Verify age three ways. Pull permit records from the county portal — most municipalities publish solar permits and final-inspection sign-offs by address. Ask the seller for the installer's contract and the utility's permission-to-operate letter; the PTO date is the official commissioning date. Check the monitoring portal — Enphase or SolarEdge shows the commissioning date and full production history.
Then do the math. Systems 0–7 years old have most warranties intact and the inverter isn't yet due. Systems 8–12 years have strong panel-warranty residue but an inverter approaching end of life — budget $2,000–$3,500 for replacement. Systems 13–18 years still produce at roughly 90% of original; the workmanship warranty is almost certainly expired and the inverter has likely been replaced (ask for proof). Systems 19+ years are approaching end of design life — production at ~85% is normal, and the decision is whether to keep running or replace. Adjust your offer accordingly.
Demand 12 months of kWh production before removing contingencies
This is the most important document the seller can produce, and the one most listings won't volunteer. Ask explicitly: please provide 12 months of kWh production data from the monitoring portal.
That data tells you four things at once. The system is actually working, not just present. What it produces in a typical year, which lets you calculate inherited savings against your projected usage. Whether production has degraded faster than the warranty curve allows — a claim you may inherit. And whether there are gaps or anomalies suggesting the system has been offline.
If the seller can't or won't provide it, that's a yellow flag. Either the monitoring portal isn't accessible to them (suggesting it was never set up under their account — a problem you inherit), or they're hiding something, or the system isn't producing. Investigate before contingencies expire.
You also need direct access to the monitoring portal under your own login. Without it, you can't see production, catch problems early, or file warranty claims. Cleanest handoff: at closing, the seller transfers the monitoring account to your name and email by contacting Enphase or SolarEdge directly. If the platform doesn't allow direct transfer, register a new homeowner account using the system's serial numbers, which the seller provides. Our monitoring transfer guide walks through orphaned-system handoffs.
Inspection red flags and what to ask the listing agent
The red flags to look for yourself — because most home inspectors aren't solar specialists and will note "panels present" then move on — are water stains in a ceiling or attic directly under the array (roof penetrations are the highest-risk failure point), mismatched panels in the same array (suggests a damage-event replacement — ask for repair documentation), loose wiring or conduit exposed on the roof surface, missing or inconsistent flashings around mounting bolts, and an inverter showing a red light or offline status during daylight.
No permit on file is a real problem. The utility may not honor net metering, homeowner's insurance may exclude the panels, and any future buyer faces the same issue. Walk away or require retroactive permitting before closing.
Ask the listing agent in writing for: ownership type, loan balance and payoff plan, lease company and remaining term plus current buyout price, installation date and installer name, 12 months of kWh production, panel and inverter manufacturer and model, inverter replacement history, active warranty claims, roof replacement since installation, monitoring credential transfer, and UCC-1 status. If the installer is Freedom Forever — in Chapter 11 restructuring as of April 2026 — the manufacturer equipment warranties survive, but the workmanship warranty is effectively void. For the full orphaned-system playbook, see When Your Solar Company Closes. Price the home accordingly.
An owned, working system on a properly permitted roof is an energy asset worth real money — Lawrence Berkeley Lab data puts the premium at roughly $4 per watt. A poorly disclosed lease, an undocumented install, or a system whose installer is gone is a hidden cost the seller is asking you to absorb. Run the numbers on the system you're inheriting at the Solar Design Studio before your inspection contingency expires.