24/7 Trauma and Biohazard Cleanup in Mountain House, CA

Mountain House is one of California's newest cities: the master-planned community was approved by San Joaquin County in 1994, construction began in 2001, and it incorporated as a city on July 1, 2024, becoming the state's 483rd city.

More than 90% of Mountain House voters approved incorporation in the March 2024 election, making it San Joaquin County's eighth city.

Mountain House takes its name from an 1849 Gold Rush waystop where Thomas Goodall pitched a blue denim tent, later an adobe house called The Mountain House, to serve miners crossing Altamont Pass toward the Sierra Nevada foothills.

Mountain House grew explosively from 9,675 people at the 2010 census to 24,499 at the 2020 census, an increase of about 153% in a single decade.

In 2020 Mountain House had 5,948 households and a median household income of $154,347.

Mountain House is built as a series of villages — including Wicklund, Bethany, Altamont, Questa, Hansen, and Cordes — each planned around a neighborhood park and a K-8 school.

About 42% of Mountain House residents were under 18 years old in 2020 — an exceptionally young age profile — and about 55% of residents were Asian.

Mountain House High School opened in 2014 and serves the whole community as part of the Lammersville Unified School District.

San Joaquin Delta College operates a campus in Mountain House's College Park village, giving the young city its own community college presence.

In November 2008 the New York Times called Mountain House the 'most underwater community in America,' reporting that about 90% of its homes were worth less than their owners owed on their mortgages during the housing crash.