MDC Low Voltage Systems

MDC Low Voltage Systems is a full-service low-voltage systems contractor proudly serving the Greater Bay Area and beyond for over 30 years. With offices in San Francisco and Walnut Creek, we design, install, and maintain high-performance infrastructure systems that keep our clients connected, secure, and future-ready. Our areas of expertise include audio-visual systems, security solutions including; Access Control, Intrusion Detection and Video Surveillance, as well as telecommunications network infrastructure including; structured cabling, wireless connectivity, data centers, outside plant (OSP) fiber optics, paging, and clock/speaker systems. We also provide emergency response services, system upgrades, and full design/build engineering support. All systems listed are designed, installed and maintained by in-house personnel. We support a wide range of industries, including healthcare, K-12 and higher education, life sciences, public works, commercial tenant improvement, residential developments, and large-scale tech campuses. Our team includes over 150 highly trained technicians and certified professionals, including RCDDs, CTS-Ds, and manufacturer-certified specialists. What sets MDC apart is our commitment to fast, clear communication, innovative problem-solving, and delivering quality work. We pride ourselves on offering exceptional customer service with a white glove delivery approach, ensuring every detail is handled with precision, care, and professionalism. Whether you're building from the ground up or upgrading existing infrastructure, we’re here to support your vision and ensure long-term performance. Have questions or a project in mind? Email us at info@mcmillanlv.com