Situations

Buying a house that already has solar: the checklist

The panels are the least important thing about the panels. The paperwork decides whether you are inheriting an asset or a twenty-year contract.

Updated September 2026 · Data as of SEC filings, the Fannie Mae Selling Guide and CFPB reporting read on 2 September 2026

Written by HyreSolar Research team Research and analysis

Audited by HyreSolar Research team Data audit and fact check

5 structures, and you must know which Owned, financed, leased, PPA, PACE

1 to 5% typical annual escalator on a PPA CFPB, August 2024

Credit qualification you must pass to assume a lease Provider’s own 10-K

The short answer

Before you offer, establish one thing: is the system owned, financed, leased, on a power purchase agreement, or paid for with a PACE assessment? Owned outright, it is an improvement to the house and standard rules apply. Financed, there may be a filing on title that has to be subordinated or cleared, and if the lender can repossess the panels then Fannie Mae's guide says they add no appraised value. Leased or on a PPA, you have to credit-qualify with the solar provider to assume the contract, and you inherit whatever escalation clause it contains for its remaining term. And an unpaid PACE balance is not a valuation question at all: it makes the loan ineligible for delivery to Fannie Mae unless it is paid in full before or at closing, which is your financing, not the seller's. Ask for the documents, not a description of them.

Ask for documents, not descriptions

Every question on this page is answered by a document, and none of them is answered reliably by a conversation. Sellers frequently do not know their own arrangement precisely, agents relay what they were told, and the words "it's paid off" cover several different situations with different consequences for you.

The pack you want, before you make an offer or as an early condition of one:

The original purchase or financing agreement, so you can see what was bought and how. Any lease or power purchase agreement in full, including its schedules, because the payment escalation lives in a schedule. Evidence of payoff and any lien release if it was financed. The manufacturer warranty documents for panels and inverter, with dates. The interconnection agreement and permission-to-operate record, which fixes when the system was authorised. Production data from the monitoring system, ideally a full year. And the permit and inspection record, which is public in many jurisdictions and tells you who actually did the work.

A seller who can produce that set has told you something reassuring beyond the contents. A seller who cannot has told you something too, because Fannie Mae's guide provides that where documentation is insufficient and the ownership status is unclear, no value may be attributed to the panels unless the lender obtains a search confirming they are not claimed as collateral. Missing paperwork is not a neutral inconvenience; it has the same effect on your appraisal as a lease.

What each structure means for you as the buyer

Structure	What you are taking on	Effect on your financing	The question to ask
Owned outright	An improvement to the house, and the remaining manufacturer warranties	Standard rules. It can contribute to appraised value	Can you show me the invoice and the warranty documents?
Financed, not repossessable	Nothing, if the seller clears the debt at closing	Can contribute to value, but a senior fixture filing must be subordinated	Is there a filing on title, and who is clearing it?
Financed, repossessable	Nothing, if cleared, but the value does not follow	No contributory value, because the panels are collateral for another debt	Do the loan documents say the panels can be repossessed on default?
Leased	A contract for its remaining term, with its escalation clause	The value cannot be included in appraised value. The payment usually counts in your debt ratios	What is the remaining term, the current payment and the annual increase?
Power purchase agreement	An obligation to buy the power the system makes, at an agreed rate	Same exclusion from value. The payment may be excluded from ratios where it is based solely on energy produced	What is the rate, and does it escalate?
PACE	Nothing, but only because it has to be gone	Your loan is not eligible for delivery unless the balance is paid in full before or at closing	What is the payoff figure, and who is paying it?

Treatment from the Fannie Mae Selling Guide, B2-3-04 and B5-3.4-01, read 2 September 2026.

The PACE row is the one that can end a deal rather than reprice it. It is a constraint on your financing, so it needs resolving before you are far into a transaction, not at the closing table.

If it is leased, read the escalator before anything else

A leased or PPA system is a long contract you are being asked to step into partway through, and the single most consequential term is usually the one nobody mentions.

The Consumer Financial Protection Bureau's description of these products is direct. Of leases: "Typical solar leases last for 15 to 20 years and require no down payment. In some cases, monthly payments are the same for the life of the lease, but in many cases the payments increase each year by a predetermined amount." Of power purchase agreements: "In some PPA contracts, the rate is fixed for the duration of the agreement. In others, there are delineated 'escalators' that increase the rate in future years and range from 1 to 5 percent. Typical PPA contract lengths are six to twenty-five years."

Work through what that means for a buyer specifically. If you assume a twenty-year agreement in its eighth year, you are not inheriting today's payment. You are inheriting twelve more years of whatever escalation the contract specifies, compounding from a base that has already been rising for seven. A 3% escalator over twelve remaining years raises the payment by roughly 43% before you reach the end of the term.

The seller has been living with the low end of that curve. You are buying the high end of it. Ask for the payment schedule for every remaining year, in writing. If the escalator is expressed as a percentage rather than a schedule, ask the provider to produce the schedule, and check it against the electricity price you would otherwise be paying, because an escalating solar payment against flat or falling retail rates is how a good deal becomes a bad one over a long contract.

You have to qualify, and the seller stays exposed if you do not

Assuming a lease is not a formality that happens at closing. One major provider states in its annual report that a customer may assign the agreement to a new homeowner "provided the new homeowner meets our credit requirements and agrees to be bound by the terms and conditions of the Customer Agreement".

So there is a third party with a veto, and it is a party to neither your purchase contract nor your mortgage. Start the transfer enquiry early, because the timeline belongs to a company with no stake in your closing date.

The same filing describes the fallback, which is worth understanding even though it is the seller's problem rather than yours: where the customer neither purchases the system nor assigns the agreement, the provider "may negotiate directly with the new homeowner to transfer the Customer Agreement (at times on modified terms) and/or look to the original customer to pay all remaining payments due." "At times on modified terms" is the phrase to note. The contract you are offered may not be the contract the seller showed you.

These are one provider's published terms, not an industry standard. Your provider's agreement governs, and it is the document to read.

The two costs a survey will not tell you about

The roof under the array. This is the largest avoidable surprise in buying a house with solar, and a home inspection will not price it for you. Removing an array to replace a roof and reinstalling it afterwards is substantial work that no warranty covers, because it is not a defect. If the roof beneath the panels is within a few years of replacement, that cost is arriving on your watch and it should be in your offer.

Ask two questions: how old is the roof, and was it replaced before the array went on? A seller who re-roofed first has saved you the problem and will usually be glad to say so. Get the roof's age independently, from the permit record, rather than from an estimate.

The age of the system against its remaining value. The best available research on solar and resale, from Berkeley Lab, found premiums falling sharply with system age: systems averaging 1.6 years old carried a premium of $5.90 per watt, and by an average age of 7.8 years it was $2.60. The report concluded that the market depreciates these systems faster than they physically degrade, and it explicitly has no data past about fourteen years.

That research is Californian, more than a decade old and about sellers rather than buyers, and we would not use it to price anything. But the direction is a useful corrective to a common framing. A ten-year-old array is not "solar included" at the value a new one would carry, and the seller's expectation may not have caught up with that.

The checklist, in the order to work through it

1
Establish the structure, from a document
Owned, financed, leased, PPA or PACE. This single answer determines everything else, including whether the system can count in your appraisal and whether your financing works at all.
2
Order a title search early and look for a fixture filing
A filing recorded ahead of your new mortgage must be subordinated or cleared. It requires a signature from the solar lender, who has no deadline pressure. Finding it in week one is administrative; finding it in the final week is a delay.
3
If there is any PACE balance, resolve it before you go further
It gates your financing rather than reducing the value. Establish the payoff figure and who is paying it, in writing, before you are emotionally or financially committed.
4
If it is leased or a PPA, get the full agreement and the remaining payment schedule
Not the current payment, the schedule to the end of the term. Then check the transfer requirements and start the qualification enquiry with the provider, because that party controls a timeline nobody else does.
5
Ask for a year of production data
Monitoring reports what the system actually generated. A full year tells you what you are buying far better than a nameplate figure, and a system that has been underperforming is a question to ask before closing rather than after.
6
Check the roof age separately from the system age
From the permit record if you can. If the roof will need replacing within the array’s remaining life, the removal and reinstallation is a real cost that belongs in your offer.
7
Check the warranties and who owes them
Manufacturer warranties on panels and inverter generally transfer, sometimes with a notice requirement. The workmanship warranty is the installer’s own promise and is worth only as much as that company’s continued existence, so check whether the installing entity is still trading and still licensed.
8
Check the permit record for who did the work
In many jurisdictions the permit is public and names the licensed entity. It is the cheapest piece of due diligence available and it is the one document nobody wrote in order to sell you something.

Method and limitations

What was read

The Fannie Mae Selling Guide sections on properties with solar panels and Property Assessed Clean Energy loans, read directly. Sunrun Inc.'s Form 10-K for the year ended 31 December 2025 from the SEC EDGAR archive, for the transfer and credit-qualification terms quoted. The CFPB's Solar Financing Market Issue Spotlight of August 2024, for the descriptions of lease and PPA structures and the escalator range. Berkeley Lab's Selling Into the Sun for the depreciation figures.

One provider, not the industry

The transfer terms are one company's, quoted from its own annual report because that is where such terms appear on the public record. They are not an industry standard. We use them because the shape of the arrangement, buyer credit qualification with a fallback to the original customer and possible modified terms, is the shape a buyer needs to understand before reading their own agreement. Your provider's contract governs your situation.

Three things we do not state

A typical transfer fee. No figure appears in any source we read. Ask your provider in writing.

A typical escalator. The CFPB gives a range of 1 to 5 percent for PPAs and says leases vary between fixed and escalating. There is no single number, and the only one that matters is in your contract.

Freddie Mac's requirements. Its guide serves no content to automated retrieval. Where this page says Fannie Mae it means Fannie Mae, and nothing here should be assumed to describe another investor's rules.

Not legal, financial or valuation advice

This describes published rules and published contract terms. Your transaction depends on your documents, your lender, your state's law and facts we do not have. Where a lease assumption or a PACE balance is involved, a real estate attorney reading the actual agreement is worth more than any checklist, and cheaper than discovering the problem at closing.

Questions

Should I buy a house with leased solar?

It can be perfectly fine, but treat it as taking on a long contract rather than acquiring an asset. Get the full agreement, the payment schedule to the end of the term including any escalation, and the transfer requirements. Then compare the payments you would inherit against what you would otherwise pay for electricity. The answer depends on those numbers, not on solar in general.

Can the seller just transfer the lease to me?

Not unilaterally. One major provider states that assignment requires the new homeowner to meet its credit requirements and agree to be bound by the agreement’s terms. That makes the solar company a third party with a veto over a term of your purchase, and its timeline is not tied to your closing date, so start the enquiry early.

What is an escalator and why does it matter more to me than to the seller?

A clause that raises the payment or rate each year by a set amount. The CFPB reports PPA escalators typically ranging from 1 to 5 percent and notes that many leases increase annually by a predetermined amount. It matters more to a buyer because the seller has been paying the early, low end of the curve and you would be taking on the later, higher end for the remaining term.

Does the solar add to the appraised value?

Only in some structures. Owned outright, standard appraisal rules apply. Leased or on a PPA, the value cannot be included. Separately financed, it counts only if the documents show the panels cannot be repossessed on default. And where ownership cannot be documented at all, no value may be attributed unless a search confirms the panels are not claimed as collateral.

What if the house has PACE financing on the solar?

Deal with it early, because it is a constraint on your financing rather than a valuation adjustment. Fannie Mae states that a property with items financed by a PACE loan is not eligible for delivery unless the PACE loan is paid in full before or at closing. Establish the payoff figure and who is paying it in writing before you are committed.

How old is too old for a system I am inheriting?

There is no threshold, but the direction of the evidence is worth knowing. Berkeley Lab found resale premiums falling from $5.90 per watt at an average age of 1.6 years to $2.60 at 7.8 years, and concluded the market depreciates these systems faster than they physically degrade. That study is Californian, more than a decade old and about sellers, so use it as a corrective to over-optimistic pricing rather than as a valuation.

Do the warranties transfer to me?

Manufacturer warranties on panels and inverters generally do, sometimes subject to a notice requirement or a fee, and you should confirm from the documents rather than assume. The installer’s workmanship warranty is a different matter: it is that company’s own promise, nothing backstops it, and it is worth checking whether the installing entity is still trading and still licensed.

What should I ask for before making an offer?

The purchase or financing agreement, any lease or PPA in full including schedules, evidence of payoff and lien release, the manufacturer warranty documents, the interconnection and permission-to-operate record, a year of production data, and the permit and inspection record. A seller who can produce that set has told you something useful beyond its contents.

Written and audited by

HyreSolar Research

Primary-source research, data analysis and fact checking

We are a research desk, not a sales floor. We read the statute, the tariff, the code section, the federal filing or the manufacturer data sheet ourselves, and we publish the figure with the document it came from and the date we retrieved it. Where a number cannot be traced to a primary source, we publish the shorter page and say what we could not verify. That rule has cost us whole sections, and it is the reason the rest can be trusted.

160: primary sources read and cited
220: figures with a retrieval date
115: federal and state government sources
66: researched pages published

How this desk works

Primary sources only. Statutes from the legislature’s own publishing system, federal data from the agency that collects it, code text from the adopted edition, manufacturer claims from the data sheet. We do not cite an article that cites a source; we go and read the source.
Every figure carries its provenance. A named document and the date we retrieved it, so you can check it and so you know how old it is. Retrieval dates are not decoration: an EIA rate from May is a different fact from an EIA rate from August.
We publish what we could not verify. Every research page carries a section naming the things we tried to establish and could not, and why. A paywalled standard, a state website that refused the request, a manufacturer that publishes no figure at all.
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Data as of SEC filings, the Fannie Mae Selling Guide and CFPB reporting read on 2 September 2026. Authorship on this site is organisational: the analysis belongs to the desk rather than to a named individual, and we do not publish credentials we do not hold. Our editorial policy sets out how we source, date and correct what we publish.

Sources & retrieval dates

Fannie Mae Selling Guide, B2-3-04 Properties with Solar Panels — Source for the treatment of each ownership structure, the exclusion of leased and PPA panel value from appraised value, the repossession condition on separately financed panels, the subordination requirement for a senior fixture filing, the debt ratio treatment of lease and PPA payments, and the rule that no value may be attributed where ownership is undocumented. Retrieved 2 September 2026.
Fannie Mae Selling Guide, B5-3.4-01 Property Assessed Clean Energy Loans — Source for the rule that a loan on a property with an unpaid PACE balance is not eligible for delivery unless the PACE loan is paid in full prior to or at closing. Retrieved 2 September 2026.
CFPB, Solar Financing Market Issue Spotlight — August 2024. Source for the descriptions of lease and PPA products quoted on this page, including that leases typically run 15 to 20 years and in many cases increase annually by a predetermined amount, and that PPA escalators range from 1 to 5 percent with contract lengths of six to twenty-five years. Retrieved 2 September 2026.
Sunrun Inc., Form 10-K for the fiscal year ended 31 December 2025 — Filed 26 February 2026. Source for the requirement that a new homeowner meet the provider’s credit requirements to assume the agreement, and for the provision that where the customer neither purchases nor assigns, the provider may negotiate directly with the new homeowner, at times on modified terms, or look to the original customer for all remaining payments due. Retrieved 2 September 2026.
Hoen et al., Selling Into the Sun (LBNL-6942E) — Lawrence Berkeley National Laboratory, January 2015. Source for the premium by system age, falling from $5.90 per watt at a mean age of 1.6 years to $2.60 at 7.8 years, and for the finding that the market depreciates these systems faster than they physically degrade. Retrieved 2 September 2026.

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