California's solar property tax break ends after 2026. Is solar still worth it?

For more than four decades, California homeowners have been able to add solar panels without adding a cent to their property tax bill. That ends for new systems on January 1, 2027.

Home solar panel systems finished before then keep the tax break for as long as the current owner holds the home. Systems completed after 2026 can be assessed like any other home improvement project and increase what homeowners pay in property taxes—adding roughly $390 to your annual bills. 

With less than three months to go, the honest reality is that most California homeowners just starting to shop for solar likely won’t have their system installed in time to qualify for the property tax exclusion. The bigger lesson is about timing. Solar policy seems to be constantly evolving; net metering becomes net billing, rebates come and go, and tax credit sunset schedules shift forward and backward. As the saying goes, the best time to plant a tree was 20 years ago; the second-best time is now. If you can take advantage of the tax exclusion in time, it’ll bring additional savings. The cherry on top. If not, you’ll still save tens of thousands of dollars by installing solar panels in 2027. 

Disclaimer: This article is intended to provide an informational overview for interested homeowners. It is not intended to serve as official financial guidance. Readers interested in installing solar products should use their best judgment and seek advice from a licensed tax professional.

Adding value to your home usually means a bigger tax bill, but Section 73 of California's Revenue and Taxation Code has carved out solar from that rule since 1980. Your home value goes up with solar, but your property taxes don't. 

California's property tax rate runs about 1% to 1.25% once local bonds are factored in. On a typical $31,000 solar panel system, here's what the exclusion keeps off your bill:

*Based on a $31,000 system and a 1.25% effective tax rate. Rates vary by county.

Prop 13 allows assessed values to rise by up to 2% per year, so over 25 years, the avoided tax can top $10,000. That’s significant, but spread over decades, it's a modest share of what solar saves on your electric bill. For context, the average Californian who goes solar saves over $124,000 over 25 years, so losing out on the property tax exclusion shouldn’t deter you from installing solar as planned.

To qualify, your system has to be completed before January 1, 2027. The safest way to read "completed" is fully switched on, with permission to operate (PTO) from your utility—not just installed and inspected. If you're unsure how your county defines it, ask the county assessor.

Whether you make it depends on factors that vary from home to home, but installations typically take two months. Some projects move quickly, while others stall at steps that have little to do with the installation itself. The most common bottlenecks are:

• Permitting: Local building departments can take weeks to sign off.

• Utility approval: PTO turnaround varies widely by utility and can back up near deadlines.

• HOA review: Architectural approvals can run longer than expected.

Ask installers for a realistic timeline based on your local permitting office and utility, but don't expect a guarantee. Even if your project slips into 2027, your system will still save you money on your electric bill.

Lawmakers have renewed the solar exclusion several times since the 1980s, which is why many homeowners assume it'll happen again. This time is a bit different.

In October 2025, Governor Gavin Newsom signed SB 710, which guarantees that systems qualifying before January 1, 2027 keep the tax break until the home is sold. It does nothing for systems installed after that date. Another bill, AB 2389, would have extended the exclusion for certain home systems through 2030, but it was held in committee on May 14, 2026, effectively ending its chances this session.

The exclusion is just the latest change. In April 2023, California's net metering overhaul (NEM 3.0) cut the credit new solar owners get for the electricity they send to the grid. At the end of 2025, the 30% federal residential solar tax credit expired. Now the property tax exclusion is sunsetting, too. Homeowners who went solar before each change locked in more savings than those who waited.

The pattern is hard to predict in detail, but the direction has been consistent: The longer you wait, the more likely it is that a benefit available today won't be there this time next year. Going solar will save you money with or without incentives, but these programs can boost your return on investment.

If you're already far along with an installer, it's worth asking where your project stands and whether PTO before January 1, 2027 is realistic. If you're just starting, plan as if you won't make it—and remember that this doesn't change the core case for solar. Your system will still cut your electric bill, and those savings don't depend on a property tax rule. The exclusion is a bonus, not the reason to go solar.

What matters most is choosing the right installer and the right financing for your home. You'll depend on that company's workmanship and warranty for 25 years or more, and a rushed install to chase a deadline isn't worth a few hundred dollars a year in tax savings.