The claim that only 1.5% of California homeowners are under 34 significantly understates the actual homeownership rate among younger adults in California.
Only 1.5% of California homeowners are under 34.

California’s homeownership rate falls again — with the sharpest drop among younger adults - capradio.org
Source: capradio.org
Key Evidence
California's overall homeownership rate is about 56%, with younger adults having lower but still significant ownership rates.
ppic.orgppic.orgHomeownership Trends in California
Homeownership among people aged 25 to 75 was around 43.5% in 2021, with younger adults showing the sharpest declines but nowhere near as low as 1.5%.
capradio.orgcapradio.orgCalifornia’s homeownership rate falls again — with the sharpest drop among...
Young adults aged 25 to 34 have lower homeownership rates than national averages but typically range closer to double-digit percentages rather than single digits.
scag.ca.govscag.ca.govNew Data Release from 2020 Census
What the Evidence Shows
Available data from multiple reputable sources indicate that while homeownership rates among younger adults in California are indeed low compared to older age groups and national averages, the figure of 1.5% is not supported by recent statistics.
The Public Policy Institute of California (PPIC) reports that California's overall homeownership rate is about 56%, lower than the national average, but does not specify such an extremely low percentage for under-34 homeowners.ppic.orgppic.orgHomeownership Trends in California
The California homeownership rate for people aged 25 to 75 dropped to 43.5% in 2021, with the sharpest declines among younger adults, but this still implies a substantially higher share than 1.5% for those under 34.capradio.orgcapradio.orgCalifornia’s homeownership rate falls again — with the sharpest drop among...
The Southern California Association of Governments notes that homeownership and household formation rates for young adults aged 25 to 34 are well below national levels but does not quantify it as low as 1.5%.scag.ca.govscag.ca.govNew Data Release from 2020 Census
Other studies and reports highlight that many young Californians face affordability challenges, delaying homeownership, but typical estimates for ownership among this age group range from roughly 10% to 20%, not near 1.5%.ternercenter.berkeley.eduternercenter.berkeley.eduCalifornia's Sliding Homeownership Ladder
fox5sandiego.comfox5sandiego.comMajority of California residents become homeowners by this age: study
Therefore, the claim likely misrepresents or misinterprets data on young adult homeownership in California by an order of magnitude.