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Commercial Door & Gate Services in Southern California
General Door Service has built a legacy of excellence spanning over 40 years in commercial and industrial door repair, installation, and security solutions. As a family-owned and operated business rooted in Southern California, we continue the tradition established by our founders' grandfather, Raymond Chasco, who pioneered the industry 35 years ago. Our commitment to fast, high-quality repairs and friendly customer service is backed by a team of professionally trained technicians and fully stocked service trucks operating across Southern California. Certified by the American Association of Automatic Door Manufacturers, we offer warranty-backed services for commercial roll-up doors, gates, dock equipment, and custom security solutions.

With a focus on safety, integrity, and sustainability, we recycle 100,000 lbs of materials annually while maintaining 24/7 emergency service availability. Our expertise extends to specialized installations like high-speed doors, fire-rated systems, and controlled access solutions, serving clients from Riverside to Santa Barbara counties. The leadership of co-owners Gene W. Ganas III and Justin T. Ganas ensures our operations reflect three generations of industry knowledge and a dedication to exceeding client expectations through innovative problem-solving and personalized service.
Services
Commercial Door Repair Gate Installation Dock Equipment Maintenance Fire-Rated Door Systems Security Gate Solutions High-Speed Door Services Rolling Steel Door Repair Custom Security Solutions Emergency Door Services Sectional Door Installation
Highlights and features
  • 40+ years of combined expertise in commercial door systems
  • Family-owned business with generational industry knowledge
  • Certified technicians with specialized training
  • 24/7 emergency service availability
  • Sustainable operations recycling 100,000 lbs annually
Associations and certifications
  • American Association of Automatic Door Manufacturers
Services
Commercial Door Repair
Our commercial door repair services address all types of industrial and business entry systems, including roll-up doors, hollow metal doors, and fire-rated solutions. Technicians handle panel replacements, bearing repairs, and weather seal installations while maintaining safety standards. Clients benefit from rapid response times and warranty-backed workmanship ensuring long-term functionality.
Gate Installation
We specialize in commercial gate installation and repair for security and access control applications. Services include motorized gate operators, controlled access systems, and scissor gate solutions. Our team ensures proper alignment, security integration, and compliance with local safety regulations for both new installations and replacement projects.
Dock Equipment Service
General Door Service maintains and repairs dock equipment including edge mount docks, pit levelers, and loading platforms. Our technicians perform comprehensive cleaning, lubrication, and component replacement to ensure safe, efficient material handling operations for warehouses and distribution centers across Southern California.
Emergency Door Services
Available 24 hours a day, our emergency services address urgent door and gate failures that compromise business security. Fully equipped service trucks enable same-day repairs for commercial clients, minimizing downtime while maintaining safety standards through properly trained technicians and quality replacement parts.
Custom Security Solutions
We design and implement tailored security solutions combining physical barriers with electronic access controls. Services include fire door release systems, automatic door operators with wireless remotes, and controlled access points that integrate with existing security infrastructure for enhanced commercial property protection.
People
Gene W. Ganas III
Co-owner and President
Gene W. Ganas III co-founded General Door Service after 12 years in the industry, including sales roles at Toyota. He combines mountaineering discipline with business leadership, overseeing operations while maintaining family traditions of excellence in commercial door services.
Justin T. Ganas
Co-owner and Vice President
Justin T. Ganas brings extensive technical expertise from his apprenticeship and construction experience. As Vice President, he focuses on training technicians and maintaining quality standards while continuing the family legacy established by their grandfather's original door company.
Questions
What commercial door services do you offer?
We provide comprehensive services including roll-up door repair, gate installation, dock equipment maintenance, fire-rated door systems, and custom security solutions for commercial properties.
Do you offer emergency repair services?
Yes, our 24/7 emergency service responds to urgent door and gate failures with fully equipped trucks and trained technicians for same-day repairs.
Which areas do you serve?
We serve all Southern California counties including Riverside, San Bernardino, Los Angeles, Orange, San Diego, Ventura, Santa Barbara, and San Luis Obispo.
Are your technicians certified?
Our team holds certifications from the American Association of Automatic Door Manufacturers and undergoes continuous training for specialized door systems.
Reviews (5)
Thao Pham
Dec 21, 2020 Report
I ordered a metal scissors gate from General Door for my business and am very pleased. Vanessa, Gene and all the employees were easy to deal with and always available when I had any questions. Their service was prompt and I was able to have my security gate made and installed in 2 weeks. I definitely recommend this business!
Pauline Copas
Dec 17, 2020 Report
I am the administrator for a Childcare center and needed some repairs on our front access doors so I called General Door for a quote and they responded immediately and got back to me with a quote that was so incredibly reasonable. They worked with my schedule to do the repair and let me tell you, the technician, Gene that came out was AWESOME!! His work was quality and he was so respectful to our families that were coming in and out of the building while doing the repairs. I highly recommend General Door over any other company. Thank you so much for helping us out so quickly.
Jordan Moretti
Sep 05, 2020 Report
Great company! These guys are responsive and professional. They are dedicated, focused, and passionate about their work. The quality and skill level of their work is impeccable and for a very fair price. The integrity of this company and its work truly speak volumes to their success.
Charles Chuang
Sep 03, 2020 Report
My office front entrance double door was damaged due to the high wind a few days ago and I had to rush and find a company to repair it. I found them online and called the office right away. They responded timely and Gene came right away and gave me a quote. The quote was far less than what Vortex gave me. They came and repaired the door yesterday and it is now working very smoothly and function perfectly. They are very professional and don't charge you an arm and a leg for their quality service. I highly recommend them!
Harlan Luoma
May 04, 2020 Report
I have used General Door multiple times and there service and knowledge of doors is exceptional. Gene and Vanessa were very helpful in guiding our business through the proper steps in our door upgrades. The service technician Justin was the most helpfull and hardest worker i have seen in a long time. If you need anything or any information regarding doors,docks or gates they will be there 24 hours a day. I highly recommend there business to any one in southern California.