A mountain resort region has become California's priciest housing market, overtaking the Bay Area's traditional luxury strongholds. Mono County's median home price hit $2,550,000 in April, eclipsing San Mateo County at $2.3 million and San Francisco at $2,127,500, according to the latest data from the California Association of Realtors. The statewide median price for an existing single-family detached home rose 2.9% month-over-month to $914,810, but remained virtually unchanged from a year ago.

Mono County, home to resort communities like Mammoth Lakes, saw a 142.9% year-over-year surge in median prices, jumping from $1.05 million last April. The county also posted a 68.9% month-over-month price jump, the steepest in the state. Meanwhile, California's most affordable market remained in the Far North region, where Lassen County's median sat at $285,000 despite a 32% monthly increase. The state's sales volume extremes were equally dramatic: Siskiyou County posted a 152.9% jump in year-over-year sales, while Lassen County saw volume plunge 76.2% compared with last year.

In Southern California, the regional pattern showed expensive coastal areas holding firm while inland desert regions corrected. Orange County remained the most expensive major market in the south at $1,470,000, while San Diego County recorded the highest year-over-year price growth at 5.8%, pushing its median to $1.074 million. Los Angeles County saw a spring buying surge with a 15% month-over-month increase in sales volume, though median prices were nearly flat year-over-year at $845,410. The Inland Empire slowed considerably: San Bernardino County saw prices drop back below the half-million mark to $495,000 while posting Southern California's steepest sales decline, down 7.0% from a year earlier.

The report attributes Mono County's dramatic spike to small sales volumes, noting that the county's 68.9% monthly price jump "came as its sales volume fell 50%, indicating that a few luxury closings drove the median higher." This volatility is "typically due to the small number of sales moving the needle" in thinly traded markets. The data reveals a California market defined by wild geographic extremes—a nearly nine-fold gap between the state's most and least expensive counties—with resort and coastal communities commanding premiums while rural and inland areas offer relative affordability. Del Norte County showed the steepest corrections, with prices down 11.8% year-over-year and 20.7% month-over-month, highlighting how smaller markets can swing dramatically in either direction based on just a handful of transactions.