Janitorial and commercial cleaning leads in California

The numbers are bigger than anywhere else in the country. California had 6,956 janitorial services establishments in 2023, employing 116,330 people, and BLS counted 245,790 janitors and cleaners statewide in May 2023, the highest of any state. Pay is high too, with an annual mean wage of $41,860. For an owner, that means buyers are used to comparing proposals and expect a crew that shows up trained and on time. The upside is the sheer depth of recurring work: offices, medical buildings, schools, labs and warehouses in every metro.

Southern California is the largest piece. Downtown Los Angeles, Century City and the Westside hold dense office towers, while Irvine and the rest of Orange County are full of suburban office parks and medical buildings. The Inland Empire, around Ontario, Fontana and Riverside, is packed with warehouses and distribution centers fed by the ports of Los Angeles and Long Beach. San Diego adds biotech labs in Sorrento Valley and Torrey Pines, and a large Navy presence.

In the north, San Francisco's Financial District and SoMa, and Silicon Valley from Palo Alto to San Jose, mix offices with data centers and research buildings. Sacramento is a government town, with state agencies filling downtown and midtown. The Central Valley, around Fresno, Bakersfield and Stockton, runs on agriculture, food processing and distribution.

What changes through the year

Wildfire season, which tends to peak from late summer into fall, can send smoke and ash into buildings far from the fire, driving extra work on air filters, windows and hard surfaces. The rainy months from roughly November to March bring mud and wet floors, especially in Northern California. Summer heat in the Central Valley and Inland Empire makes cooler overnight shifts the norm, and coastal tourist areas stay busiest in summer.