The fire - burning in Santa Cruz and San Mateo counties just south of San Francisco - has now charred at least 86,509 acres, according to California's state fire authority CalFire.
Officials said there's minimal fire activity throughout the area with crews focusing on controlling hot spots in order to allow for residents to return to certain neighborhoods.
Near Boulder Creek, dozens of homes were destroyed and left in heaps of rubble with blackened propane tanks and tool cabinets, ash-covered chimneys, and burnt out vehicles all that remained on the properties.
The fire has destroyed 1,490 commercial and residential structures while damaging another 140.
The fires also have filled the region's air with harmful levels of smoke and soot, bathing skies in eerie tones of orange and sepia while adding to a public health crisis already posed by the coronavirus pandemic.