About Us
[ About Our Company ]
What We Specialize In
At GMCS, we pride ourselves on delivering a first-hand experience. As well as prioritize the smallest job. We count on our customers, as we rely on our customers. No business would exist without the support of the community. Here at GMCS, a facility and property maintenance service provider. we provide services in surface floor cleaning, power pressure washing services. And Janitorial services for your home or business. Give us a call to setup a free consultation
Our History
General maintenance contract services began in 2006, a venture that has remained a family-owned and operated business. We pride ourselves on offering reliable and dedicated services to our community. Our commitment to client satisfaction is at the forefront of everything we do. We strive to build lasting relationships through our consistent performance. We are grateful for the opportunity to serve your needs. Give us a call to set up a free estimate 209-582-5686
[ Meet The Owner ]
Meet the Business Owner
GMCS is a comprehensive facility and property maintenance provider specializing in pressure washing, surface floor cleaning, and full-service janitorial solutions. We help businesses maintain clean, safe, and professional environments that leave a strong first impression on customers and tenants. With over 20 years of hands-on experience in facility maintenance—including previous work as an Asset Manager—Gregory Martinez brings deep operational knowledge, attention to detail, and a client-first approach to every project. Today, GMCS focuses on delivering reliable, high-quality maintenance services tailored to the needs of commercial properties, retail spaces, and multi-unit facilities. Our mission is simple: provide dependable services that protect your property’s value and keep your operations running smoothly.