Solar panels on a listing photo look like a bonus — lower electric bills from the day you move in, no installation hassle, nothing to figure out. Sometimes that’s exactly right. Just as often, what’s actually on the roof is a 20-year financial contract you’re about to inherit, not a piece of equipment that came free with the house. The difference between those two situations comes down to one question most buyers don’t think to ask until an inspection is already underway: who owns the system?
If solar panels are already on the roof of a home you’re considering, here’s how to find out which situation you’re actually in, and what to check once you know.
First, Determine How the System Is Owned
There are four ways a solar system on a home you’re considering could be structured, and each one changes what you’re actually buying:
- Owned outright. The current homeowner paid cash or has already paid off a loan. The system transfers with the home exactly like the roof or the HVAC system — no third party involved, nothing to assume.
- Loan-financed, not yet paid off. Similar to owned outright, except there’s a remaining balance. This typically gets resolved at closing, either by the seller paying it off or by negotiating who covers it.
- Leased. A solar company owns the equipment, and the homeowner pays a fixed monthly fee for the electricity it produces, regardless of how much the system actually generates.
- Power Purchase Agreement (PPA). Similar to a lease, but instead of a flat monthly fee, the homeowner pays per kilowatt-hour of electricity the system actually produces, at a pre-agreed rate.
The seller’s real estate agent or the listing paperwork should be able to tell you which of these applies, but don’t take it at face value — ask directly, and ask for the actual contract if a lease or PPA is involved. This single question determines almost everything else about how the rest of the transaction should go.
If the System Is Leased or Under a PPA, You’re Assuming a Contract
If the panels are owned outright, there isn’t much more to sort out from a financing standpoint. If they’re under a lease or PPA, you’re not just buying a house — you’re also being asked to take over someone else’s multi-year energy contract, and that contract doesn’t transfer automatically just because the sale closes.
The Department of Energy’s guide to solar financing lays out the tradeoffs between leases, PPAs, and loans in detail, but the transfer mechanics come down to this: the leasing or PPA company generally needs to approve you as the new account holder, which typically involves a credit check, before the transfer is finalized. If you don’t qualify, or don’t want to take on the remaining contract term, the seller may need to buy out the remaining balance to complete the sale — which is a negotiation point worth raising early, not something to discover during escrow.
Before agreeing to assume any lease or PPA, get answers to these in writing: how many years remain on the contract, what the monthly payment or per-kWh rate is and whether it escalates annually, and what the buyout cost would be if you decided you’d rather not take it on. These are the same questions a commercial buyer would ask about any long-term energy contract, and a residential lease deserves the same scrutiny.
What California Law Requires Sellers to Disclose
California’s Transfer Disclosure Statement requirement — Civil Code Section 1102.6 — obligates sellers of most residential properties to disclose known material facts about the property’s condition in good faith, and this obligation can’t be waived, even in an “as-is” sale. That includes known issues with major systems on the property, which extends to a solar installation if the seller is aware of problems with it.
A disclosure form is a good-faith accounting of what the seller knows, not an independent inspection. It won’t tell you whether the inverter is nearing the end of its warranty or whether the system has been producing at expected output. For that, you’ll want to request production data (most systems have a monitoring app or portal that logs historical output), the original installation contract, and any warranty documentation directly, rather than relying on the disclosure form alone.
Check the System’s Age, Condition, and Service History
Solar equipment doesn’t fail often, but it does age, and a system installed a decade ago uses different technology than one installed last year. A few things worth checking before you close:
- Panel and inverter age. Most panels carry 25-year performance warranties, but inverters — the component that converts the panels’ output into usable electricity — often carry shorter warranties (commonly 10 to 12 years) and are more likely to need replacement mid-system-life.
- Who installed it, and are they still in business. The solar industry has seen real consolidation over the past several years. If the original installer is no longer operating, warranty claims may need to route through the manufacturer directly instead, which can be a slower process.
- Whether the system has been serviced by a company other than the original installer. Not every solar company will work on equipment it didn’t sell. If the original installer is gone, you’ll want a contractor willing to service systems regardless of who installed them — worth confirming before you need it, not after something stops working.
Pacific Solar services solar systems we didn’t originally install, including older systems and other manufacturers’ equipment, as a standing part of how we operate — not a special favor. If you’re buying a home with an existing system and want a second opinion on its condition before you close, that’s a straightforward thing to ask for.
What About the Federal Tax Credit?
One clarification worth making directly: buying a home with an existing solar system doesn’t come with any federal tax credit, regardless of the system’s age or how it was financed. The federal Residential Clean Energy Credit is tied to whoever paid for the original installation, not to current ownership of the home, and it isn’t retroactively available to a new buyer. If you’re comparing the cost-benefit of a home with solar against a comparable home without it, factor in electricity savings and, if applicable, remaining lease or PPA payments — not a tax credit that isn’t part of the equation for you.
Want a second opinion on a system you’re inheriting? Contact Pacific Solar before you close — we’ll look at the equipment, not just the paperwork.
Frequently Asked Questions
Do I automatically take over the solar lease when I buy the house? No. The leasing or PPA company generally has to approve you as the new account holder first, which usually involves a credit check.
Is the seller required to tell me about problems with the system? Yes, in general. California’s Transfer Disclosure Statement requirement obligates sellers to disclose known material facts about the property’s condition, and that obligation applies even in an “as-is” sale.
Do I get any tax credit for a system that’s already on the house? No. The credit, when it applied, was tied to whoever paid for the original installation — it doesn’t transfer to a new owner regardless of the system’s age.
How do I even find out if the system is owned, leased, or under a PPA? Ask the seller’s agent directly, and request the actual contract if a lease or PPA is involved — don’t rely on the listing description alone.