The 47 largest Facilities Services companies in California (2026 list)

The Facilities Services sector in California comprises a mix of established companies and more recently founded firms, primarily focusing on maintenance, cleaning, and specialized technical services. Companies like KBS - Kellermeyer Bergensons Services, Able Services, and Flagship Facility Services, Inc. offer a broad range of janitorial, engineering, and maintenance solutions. Others, such as CoolSys - Refrigeration and HVAC Systems and EMCOR Services Mesa Energy, specialize in HVAC and energy solutions, while Prudential Overall Supply provides work wear and cleanroom apparel services.

Many of these companies, including KBS and Able Services, serve a wide geographical area beyond California, often across North America. A notable pattern among the listed companies is the strong presence of firms offering comprehensive building maintenance and specialized technical services like HVAC and refrigeration, indicating a mature market for integrated facility management solutions.

#	Company	Industry	Headquarters	Employees	Founded
1	KBS - Kellermeyer Bergensons Services, LLC kbs-services.com Provides janitorial services, floor care, exterior maintenance, facility operations support, and hospitality staffing across North America to businesses for clean environments.	Facilities Services	🇺🇸 Oceanside	5,743	n/a
2	Able Services abm.com A company specializing in facility services, engineering, and technical services, focused on enhancing occupant experience and improving spaces through innovation and sustainability	Facilities Services	🇺🇸 San Francisco	1,851	n/a
3	CoolSys - Refrigeration and HVAC Systems coolsys.com This company provides sustainable refrigeration, HVAC, energy, and engineering solutions for various sectors, covering the entire lifecycle of commercial systems	Facilities Services	🇺🇸 Brea	1,675	1997
4	Flagship Facility Services, Inc.flagshipinc.com A facilities maintenance company providing janitorial, engineering, and maintenance services to industries across the US and Canada, focusing on customer experience	Facilities Services	🇺🇸 San Jose	1,528	1988
5	TruGreen LawnCare trugreen.com Partnership providing scholarships and professional development for students pursuing careers in agronomy, plant science, and related sciences.	Facilities Services	🇺🇸 East Palo Alto	1,382	n/a
6	EMCOR Services Mesa Energy mesaenergy.com This company provides HVAC, building automation, and retrofit services, delivering customized energy solutions for enhanced occupant comfort and lower operating costs	Facilities Services	🇺🇸 Irvine	685	n/a
7	Prudential Overall Supply prudentialuniforms.com Family-owned and operated since 1932, provides work wear uniforms, career apparel, casual wear, facility image, safety requirements and cleanroom apparel services for various industries.	Facilities Services	🇺🇸 Irvine	654	1932
8	Merced City School District mcsd.k12.ca.us Facilities services provider based in Merced, California, offering services to the local community and ensuring efficient operation of buildings	Facilities Services	🇺🇸 Merced	644	n/a
9	COIT Cleaning and Restoration Services coit.com Full service cleaning and restoration company offering a wide range of services from carpets and upholstery to water extraction and mold remediation	Facilities Services	🇺🇸 Burlingame	565	1950
10	Therma therma.com Maximizing energy efficiency through engineering, construction, installation, and maintenance of mechanical and plumbing systems for complex built environments and manufacturing facilities.	Facilities Services	🇺🇸 San Jose	528	n/a
11	Servicon servicon.com Servicon provides flexible cleaning and maintenance solutions to various industries, focusing on creating healthy environments and embracing innovation in the industry	Facilities Services	🇺🇸 Culver City	515	1973
12	Stratus Building Solutions stratusclean.com Provider of green commercial janitorial services, offering comprehensive eco-friendly cleaning options using state-of-the-art equipment and non-toxic products Also provides franchising opportunities	Facilities Services	🇺🇸 North Hollywood	515	2006
13	Sciens Building Solutions sciensusa.com Provider of fire protection, security, communications, and electrical solutions for various industries, dedicated to ensuring safety, protection, and business continuity	Facilities Services	🇺🇸 Pleasanton	508	2016
14	The Arcticom Group thearcticomgroup.com A family of HVACR operating companies offering high-quality services, maintenance, repairs, and installations with a focus on efficiency and customer satisfaction	Facilities Services	🇺🇸 Walnut Creek	491	2017
15	Celebrity Cruise Line celebritycruises.com Facilities services company based in Santa Monica, California, specializing in services related to Celebrity Cruise Line	Facilities Services	🇺🇸 Santa Monica	488	n/a
16	Western Exterminator Company westernexterminator.com A family-owned pest control company offering top-notch service since 1921, with a commitment to customer satisfaction and excellence	Facilities Services	🇺🇸 Anaheim	484	n/a
17	Vortex Doors vortexdoors.com Industry expert in commercial and industrial door repair services, offering fast and friendly customer service with a wide range of repair options	Facilities Services	🇺🇸 Irvine	473	1937
18	Air Systems, Inc.airsystemsinc.com Air Systems provides comprehensive facilities solutions with a focus on quality, sustainability, and customer satisfaction throughout the entire building cycle	Facilities Services	🇺🇸 San Jose	368	n/a
19	Corovan corovan.com A family-owned commercial moving and storage company in California offering expert relocation services, warehousing solutions, and logistics for enterprise-scale moves	Facilities Services	🇺🇸 Poway	349	1948
20	Spotless getspotless.com A dedicated flooring specialist with 16 years experience in providing top-notch commercial and residential carpet cleaning and floor care services	Facilities Services	🇺🇸 Pleasanton	347	2000
21	Rockport Administrative Services Provider of high-quality, person-centered care for older adults through innovative programs, including volunteer initiatives, in post-acute and long-term care settings	Facilities Services	🇺🇸 Los Angeles	317	n/a
22	Pegasus elevate.pegasusclean.com Global leader in critical cleaning using advanced technology to create clean, healthy indoor environments for commercial and industrial facilities Recognized for growth and workplace excellence	Facilities Services	🇺🇸 San Diego	256	1969
23	Peterson Power Systems petersonpower.com Provider of Caterpillar diesel and natural gas engines, power generation solutions, temperature control systems, marine applications, UPS systems, fuel cells, switchgear, parts, service, and rental power equipment	Facilities Services	🇺🇸 San Leandro	199	1936
Want more companies than this list? This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. Get more companies, free
24	DMS Facility Services dmsfacilityservices.com A people-oriented, environmentally responsible organization providing high-quality, cost-effective service solutions to businesses and communities, using sustainable products and procedures	Facilities Services	🇺🇸 South Pasadena	182	1969
25	Stations San Jose gostations.com With 30 years of experience in the Communications industry, we offer high-quality product installations at competitive prices, leveraging a vast network of contacts	Facilities Services	🇺🇸 San Jose	168	1993
26	Industrial Electrical Company industrialelectricalco.com A third-generation family-owned industrial electrical company offering contracting, product sales, motor repair, field services, welder and generator sales/service, and technical training since 1935	Facilities Services	🇺🇸 Modesto	165	1935
27	Pacific Coast Companies Inc paccoast.com A team of professionals offering various business services and support such as marketing, accounting, HR, IT, risk management, and legal services	Facilities Services	🇺🇸 Rancho Cordova	163	2000
28	Geil Enterprises Inc geilenterprises.com Employee-owned company in Central Valley, CA since 1986 Divisions offer security, cleaning, alarm systems, and janitorial supplies to commercial/industrial businesses	Facilities Services	🇺🇸 Fresno	162	1986
29	MIC TTTTT Specializing in MIC treatment and maintenance services to protect equipment and infrastructure from microbial influenced corrosion	Facilities Services	🇺🇸 Poway	161	2003
30	Lloyd Pest Control lloydpest.com A leading pest and termite control company in Southern California with guaranteed solutions, personalized service, 24/7 access, and a strong reputation for ethics and customer satisfaction	Facilities Services	🇺🇸 San Diego	155	1931
31	Sabah International sciensusa.com Specializes in fire protection systems, including clean agent suppression, fire alarm, and life safety systems for various industries in California	Facilities Services	🇺🇸 Pleasanton	154	1972
32	C & L Refrigeration clrefrigeration.com A family-owned HVACR service provider offering innovative solutions for commercial and industrial clients across multiple states, focused on customer satisfaction and employee development	Facilities Services	🇺🇸 Fullerton	149	1977
33	Servi-Tek Facility Solutions servi-tek.net The company is a leader in innovative technology and exceptional service, focusing on customer happiness and staff development	Facilities Services	🇺🇸 San Diego	148	2006
34	CarPark carpark.com An LA-based company specializing in parking facility management and transportation, dedicated to enhancing customer experience and improving the bottom line	Facilities Services	🇺🇸 Los Angeles	131	2005
35	Professional Maintenance Systems pmsjanitorial.com A professional cleaning company with over 40 million SF of facilities in California & Washington, certified in safety, sustainability, and diversity	Facilities Services	🇺🇸 San Diego	56	1982
36	Zan Compute zancompute.ai Zan Compute offers an AI-based facility maintenance platform, Zanitor, that automates custodial processes with real-time tracking for efficient and cost-effective cleaning management	Facilities Services	🇺🇸 Santa Clara	51	2014
37	Patriot Logistics patriotadvantage.com A logistics and facilities solutions partner serving major retailers in the Western United States, offering maintenance, redeployment, asset tracking, warehousing, transportation, and value-added services	Facilities Services	🇺🇸 Stockton	45	2005
38	USC Facilities Management Services fpm.usc.edu A facilities management company supporting USC's research, academic, and patient care programs, maintaining physical assets with quality service and sustainability	Facilities Services	🇺🇸 Los Angeles	30	n/a
39	ARC Facilities arcfacilities.com Pioneering mobile facility management software for quick access to building plans, shut-off locations, and equipment details anytime, anywhere Visit website for more information	Facilities Services	🇺🇸 San Ramon	27	2016
40	Skyline Building Care skylinebuildingcare.com Professional janitorial services company specializing in comprehensive building maintenance solutions with a focus on high-quality, customized cleaning using advanced equipment and green products	Facilities Services	🇺🇸 Walnut Creek	22	2010
41	Service 1st Contractors service-1st.com Specializing in installation, maintenance, and repair of commercial plumbing, HVAC, refrigeration, kitchen equipment, electrical, and pool systems for property and facilities management industries Offers 24/7 service	Facilities Services	🇺🇸 Santa Ana	20	1985
42	SmartRise Elevator Service Inc smartriseelevator.com A mid-sized elevator service company offering expert maintenance, repair, and consulting services with a focus on customer satisfaction and communication	Facilities Services	🇺🇸 Santa Fe Springs	10	2009
43	IoEnergy, Inc.ioenergyinc.com Energy efficiency and building technology firm specializing in high ROI upgrades, IoT solutions, renewable energy projects, and carbon footprint management for commercial and industrial clients	Facilities Services	🇺🇸 Carmel	7	2015
44	Blue Planet Energy Solutions blueplanetes.com An energy service company providing a range of energy solutions, including design, implementation, retrofitting, energy conservation, power generation, and energy-efficient equipment installation	Facilities Services	🇺🇸 San Diego	4	2010
45	Nite & Day Power niteanddaypower.com Provider of backup power systems and services for businesses in the San Francisco Bay Area since 1986 Offers 24/7 support, maintenance plans, and reliable customer service	Facilities Services	🇺🇸 Ben Lomond	3	1986
46	Delta Power Inc.deltapowerinc.com Established in 1983, the company provides installation and maintenance services for standby/emergency power and distribution systems, enhancing reliability through project-specific analysis and maintenance regimens	Facilities Services	🇺🇸 Santa Ana	3	1983
47	Intrinzec intrinzec.com The company specializes in providing comprehensive energy solutions through engineering, design, project management, and system integration for efficient and synchronized building systems	Facilities Services	🇺🇸 San Clemente	1	2016

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

The 47 largest Facilities Services companies in California

Want more companies than this list?

Turn this list into pipeline

How this list is built

More company lists in California

The same list elsewhere in United States