• Mon – Fri: 9:00 am – 4:00 pm
  • Sat: 9:00 am – 1:00 pm, Sunday Closed
  • Clarity, quality and value are all important when choosing the right diamond. At Diamond Builders, those same traits have been the driving force behind our professional window and door installation business since 2005.  We provide Los Angeles and Ventura County clients with exceptional quality and clarity when it comes to all our window and door installations, packaged with outstanding customer service, open and honest communication, and affordable pricing.

    We specialize in residential and commercial window and door installations (3-story maximum), are licensed, bonded and insured, California-law compliant, all with an ironclad warranty to put your mind at-ease for years to come.  From initial measurement to completion, the experienced team at Diamond Builders will get the job done right!   Need some window and door ideas?  Visit our Gallery page now to view some of our transformative outcomes.  We also provide FREE estimates, so please contact us today if we can assist you!

    How Can I Get Started?

    When it comes to the best window and door installations, details matter. First, call us Mon – Fri at: (818) 697-9779, or reach us today through email. We’ll promptly dispatch an experienced installation consultant to determine the windows and doors that best meet your vision and budget. If you need help finding windows or doors, we can recommend several local suppliers to choose from based on your objectives. Our consultant will then carefully inspect and measure your intended window or door locations. They will also explain the many benefits of using experienced and highly-trained installers, like those at Diamond Builders, to complete and discuss your project.


    The 4 Window & Door Materials We Install

    More economical than other materials, aluminum doors and windows exceed California high-efficiency standards and further provide home and business owners with excellent durability, along with many design flexibility options.
    Used in boat construction and for chemical storage tanks due to its durability, strength, and weather-resistance, fiberglass is also highly energy-efficient. It’s proven to hold up very well in extreme heat like we experience in-and-around the Los Angeles area.
    Vinyl windows and doors were first introduced in the late 1970s, and have enjoyed much success due to their low maintenance, durability and energy efficiency. Most will last for decades, and vinyl never needs painting or staining.
    Nothing delivers a classic and timeless look quite like wood, and wood windows and doors match any type of home design and décor, from traditional to modern. It can also be cut to fit more easily than other materials, and painted or stained any color you wish. Wood also serves as an excellent natural insulation barrier against heat and cold.

    These People Trust Us!