Contractor’s License #721953C-17

Preferred Glass & Window Installation

We Offer Lifetime Guarantees on All Our Work

Get Your Free Estimate Today

See How We Can Add Beauty & Value to Your Home

Serving Southern California Since 1969

Our Experienced Installers Are AAMA Certified

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Preferred Glass
& Windows

Serving: Simi Valley, San Fernando Valley, and Surrounding Areas


Preferred Glass & Windows has been serving the Simi Valley, San Fernando Valley, and other surrounding areas for over 50 years. We have an outstanding reputation for the high integrity, exceptional quality, and proficient workmanship we have provided to our customers over the years. We have been voted the #1 Glass & Window Store many times by the People’s Choice Awards of the LA Daily News and Ventura County Star. Our attractive showrooms, located in Simi Valley, are displayed with a wide selection of products to help you in making choices that you will be pleased with.


Call Us Toll Free 805.495.7976 or request your free estimate online today!

Our Services


Windows & Doors

Home begins at the door. Bring elegance to your entrance. We finish most jobs in one day.


Shutters & Blinds

We have installed and replaced 1000's of windows of all shapes and sizes, often in a one-day process.

Bathroom Mirror

Glass & Mirrors

We are a one-stop glass shop, and we always work with premium brands.

Frameless Showers

Frameless Shower & Tub Enclosures

Add beauty and value to your home with glass enclosures for your shower.


Commercial Glazing & Tinting

We offer our high quality services to commercial buildings.

    Get Your Free Estimate

    We Also Offer Free Financing

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    Lifetime Installation Guarantee

    Here at Preferred Glass and Windows we offer a lifetime guarantee on installation. That means anything that is ordered through us and installed by our experienced and knowledgeable staff has a lifetime guarantee on installation. Preferred Glass and Windows hopes that by providing great customer service and quality products, we can build and maintain trusting long term relationships with all our customers.

    A.A.M.A. Certified Installers

    Our highly trained and experienced team of professionals are committed to your field. At Preferred Glass and Windows we take pride in the quality of our work and enjoy doing it. We believe that our team has the expertise and character to perform beyond our customers expectations, both in quality and performance. Our installers at Preferred Glass and Windows are certified through the A.A.M.A. Certified Installation Masters Association

    Serving the Community Since 1969

    Fully Insured and Bonded Professionals

    Certified AAMA Installers

    Award Winning Service

    Lifetime Guarentee

    What Our Customers Have To Say

    Testimonial 1

    “Hands down the best window and shower enclosure company in the Conejo Valley! They did my entire house with new windows and the master and guest bath shower enclosures. AND my closet doors. They are punctual, clean and courteous. I’m super picky and they just say no problem when I nit pick. You will not be disappointed if you hire Preferred Glass. Tyler and his brother are the best installers ever!!! Debi in the office is also the bomb! “

    Maxine E.

    Testimonial 1

    “We had Preferred install custom stained glass front doors. They met the lead time on the door installation date & the guys they sent to do the job were real craftsmen. The doors came out perfect. Not to mention they saved us $1000 from the quote because they were able to install the doors without breaking the surrounding stucco as was expected. They also replaced window glass with rails to match the existing install. Their work matched perfectly. They also did screens on this house & our last house & were completely reasonable. You definitely get what you pay for!”

    Gary S.

    Testimonial 1

    “We had an umbrella go through the large kitchen window during a wind storm. The wind was blowing into our kitchen, not good. Preferred Glass, Rachael, arranged for a tech visit in about an hour. The tech was extremely pleasant and very capable. The glass was replaced like it never happened. Thank You Preferred Glass – 5 stars”​

    Paul J.

    24 Hour Emergency Board-Up Service Call Now 805.495.7975
    Lifetime Warranty
    Award Angies List
    Readers Choice Award
    Readers Best Winner
    League of California Approved
    Lifetime Warranty
    Award Angies List
    Readers Choice Award
    Readers Best Winner
    League of California Approved
    Seal of Los Angeles
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