One of the most common questions homeowners ask before going solar is: "Will solar panels increase my home's value?" The answer, consistently across multiple studies over the past decade, is yes — with important nuances.
What the Research Says
The most cited study on this topic is a Zillow analysis that found homes with solar energy systems sold for an average of 4.1% more than comparable homes without solar. For a $350,000 home, that's approximately $14,350 in added value at time of sale.
A Lawrence Berkeley National Laboratory study (the largest of its kind, examining 22,000+ sales across 8 states) found a national premium of approximately $4 per watt of installed solar capacity. On a 7 kW system, that's $28,000 in added home value — often exceeding the original installation cost after the federal ITC.
How State and Market Affect the Premium
The solar premium is not uniform. It's stronger in states where:
- Electricity rates are high (buyers see more immediate savings)
- Solar is common and buyers understand the value proposition
- Net metering is favorable
- The local real estate market is competitive
States like California, New York, Massachusetts, Connecticut, and New Jersey tend to show stronger solar premiums than markets where electricity is cheap and solar adoption is lower. Texas is interesting — rising electricity rates and ERCOT grid concerns are increasing buyer interest in solar homes.
Important caveat: The premium generally applies to owned solar systems. Homes with leased solar or PPA systems can actually be harder to sell — the lease must be transferred to the new buyer, and not all buyers want to assume a long-term solar lease obligation. Always own, don't lease, if maximizing home value is a goal.
Property Tax Treatment of Solar by State
Most major solar states have addressed the property tax issue by exempting solar added value from assessment:
- New Jersey: Solar systems exempt from property tax increase (NJ Statute 54:4-3.113a)
- New York: RPTL §487 exempts solar from property assessment for 15 years
- Massachusetts: Solar exemption available (varies by town — M.G.L. c.59 §5)
- Connecticut: CGS §12-81(57) provides property tax exemption for solar
- Florida: FL Statute 196.182 — 100% exemption on solar added value
- California: Revenue & Taxation Code §73 — new construction solar exempt
- Texas: TX Tax Code §11.27 — solar added value exempt from property taxes
Should I disclose solar when selling my home?
Yes — in virtually all states, material facts about the property including energy systems must be disclosed. Importantly, you should disclose whether the system is owned or leased, as this significantly affects the buyer's decision and the home's value.
Does solar help a home sell faster?
Research from the National Bureau of Economic Research found solar homes sell approximately 20% faster in most markets. In high-electricity-cost states, buyers actively search for solar homes and are willing to pay a premium to avoid the installation process.
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