What the MLS records about your solar panels

What does the MLS actually record about solar panels?

Most local MLS systems now follow the RESO Data Dictionary, the data standard real estate boards use so listings can be shared and searched consistently. Its PropertyPowerProduction resource defines thirteen structured fields for an on-site power system: what type it is, who owns it, how much it produces, and how large it is. A checkbox for "solar" used to be the whole story. Now there's a schema.

None of that is visible to a browser on the listing site. It sits underneath the photos and the remarks, feeding the fields an appraiser's software and a lender's underwriting system query. Get it wrong and nobody notices until someone downstream does.

What is the PowerProductionOwnership field, and why does it matter when you sell?

One field carries more weight than the rest: PowerProductionOwnership. It's where an agent records whether the system is owned outright, financed with a loan, leased from a third party, or held under a power-purchase agreement or subscription. A buyer's lender reads that field, or asks for it, before touching anything else, because it decides whether there's a lien to search for and a contract to assume.

Fannie Mae's own Selling Guide spells this out for the lender's side: pull a UCC search, confirm whether the panels are pledged as collateral, and handle a leased or financed system differently from one the seller owns free and clear. The MLS field is upstream of that whole process. If it's wrong, the lender finds out the hard way, usually late in underwriting.

Does every MLS collect these fields the same way?

No, and that's worth knowing before you assume your listing is complete. RESO's own research into adoption found power-production fields rolling out unevenly across the country's roughly 500 MLSs: some have taken the full PropertyPowerProduction resource, others still run a single "has solar" checkbox with no ownership detail at all. Ask your agent which one your MLS uses before you list.

If your market's MLS hasn't adopted the structured fields yet, the ownership question doesn't disappear, it just moves into the remarks section as free text, which means it's only as accurate as whoever typed it. Put it in writing in the listing yourself, don't leave it to memory.

What does a subscription system show up as in the MLS?

Filled out correctly, PowerProductionOwnership should show the system as third-party owned, not owned by the seller. That's accurate: with a subscription, the provider owns the panels, so there's no lien and no UCC-1 fixture filing sitting against the house for a buyer's lender to find. A lease or PPA lands in the same non-owned category, but usually carries an assumption requirement the field alone doesn't capture.

The bottom row is the whole reason this field is worth reading closely. A subscription's real commitment is 36 months, inside a 10-year agreement the customer can walk away from once that 36-month mark passes with no fee. None of that shows up as a lien anywhere a title search would find it, because there isn't one.

What should you ask your agent before they list a house with solar?

Three questions cover it: which value they entered for ownership, whether your MLS captures that field at all, and whether the listing remarks contradict it, like calling a subscription a "solar lease" out of habit. Get the ownership entry right and a buyer's agent, an appraiser, and a lender all read the same accurate story before any of them calls you.

• Ask which PowerProductionOwnership value (or equivalent field) they entered, and why.
• Ask whether your local MLS has adopted the full RESO fields or still uses a single checkbox.
• Read the remarks yourself. "Solar lease" and "solar subscription" are not the same disclosure.
• Pull your own UCC search before you list, so you're not learning what the field should have said from a buyer's lender.

Get your number

If you're the one deciding how to go solar rather than the one selling a house that already has it, the closing-table mechanics are laid out atselling a house with solar, and the county-by-county search for an existing lien is atwhere solar liens actually get recorded. Orrun your own bill through the estimator and see what a subscription would put in that MLS field on your own house.