Mountain Home, also known as Casa Loma (Spanish for "Mountain Home"), is a sparsely populated area located on the eastern side of the Santa Cruz Mountains in unincorporated southwest Santa Clara County, California near Mount Chual and Rancho Canada del Oro Open Space Preserves.

The area is situated within the upper Llagas Creek watershed, bounded by Mount Chual and Rancho Canada del Oro Open Space Preserves toward the north, Loma Prieta Road on the west, Loma Chiquita Road on the south, and Twin Creeks Road on the east.

[3] The area is mostly mountain ridges with steep, sloping terrain and narrow canyons.

[4][5] Native vegetation ranges from a mixed conifer-oak woodland along the mountain ridges, to chaparral and coastal scrub along the slopes, to riparian flora along the canyon floors.

In 2016, the Loma Fire burned through approximately half the region, with multiple homes damaged or destroyed.