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General B Contractor specializes in the installation, selling, and replacement of windows and doors. We offer an end-to-end client experience which includes seamless communication, budgeting, staffing, on-site organization, and quality door and window handiwork every time. Our team has worked with homeowners and designers to produce new windows and doors we know you'll love! We proudly serve Santa Clara County, San Mateo County, Santa Cruz, Alameda County County, Monterey County, Contra Costa County. Call General B Contractor today at (408) 999-1111 and bring our project management skills and extensive experience to your next window and door installation project.

door replacement, door installations


Whether you need a door installation or door replacements, General B Contractor can handle any door project for your home. We offer a variety of door styles and configurations to customize any indoor space including your kitchen, living room, or front entrance.

  • Bi-Fold Door Replacement

  • Multi-Slide Door Replacement

  • Swinging French Door Replacement

  • Sliding Patio Door Replacement

  • Double Sliding Door Replacement

  • Modern Doors And More!


Create the ultimate view like never before with an array of window styles to open up your living space and let natural light in. Our contractors are always here to help you decide which window is best for your needs and budget.

  • Vinyl Window Replacement

  • Single-Hung Window Replacement

  • Double-Hung Window Replacement

  • Sliding Window Replacement

  • Casement Window Replacement

  • Bay and Bow Window Replacement

  • Special Shaped Window Replacement

window replacement, window installation


window replacement, window installations, san jose, santa clara
vinyl window installations san jose

"My general contractor recommended this firm to replace windows in my house. What I like that there was no sales pressure when selecting windows. They gave me a very good price. Windows come in three weeks, and they did installation in three days (that included retrofit of 12 old aluminum frame windows and new-construction replacement of two sliding doors). The job quality was..." Read More

Vlad K. San Jose, CA

sliding door replacement sunnyvale

"We needed to get 2 sliding doors replaced in our house. We contacted Shota who came in and gave a very quick and thorough assessment of what is wrong with our current installations and provided various options. He listened carefully to what we wanted and we were able to narrow down to a choice quickly. His crews then came to do the installation promptly and did a very professional job..." Read More

Bilal M. Sunnyvale, CA

"I got my house in Milpitas serviced by General B Contractor. They changed all the glass windows and doors of the property - 4 sliding doors including Patio , Kitchen and Master Bedroom and all other windows (22 total) including a beautiful garden window. Shota of General B Contractor personally supervised all installations and paid ultimate attention to details. His crew members are well...." Read More

Animesh M. Pleasanton, CA

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