Alexander company

Window specialist

Window & Door Questions?

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Replacement Windows, Doors & Skylights Since 1971

650-373-3900

Lic. No. 642553

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REPLACEMENT WINDOWS & DOORS SINCE 1971
Alexander Company is a family owned business that has been serving the San Francisco Bay Area for over thirty years. We carry a wide selection of top quality replacement doors and windows, and are committed to providing our customers with total satisfaction. In addition to providing the finest replacement windows and doors, our expert staff offers  window installation and door installation services to help you create your ideal home.

THE BEST BRANDS
Alexander Co. has a wide selection of replacement windows and doors from the leading manufacturers, all at competitive prices. Whether you are in the market for replacement window and doors, door repair or window repair, or window installation services, Alexander Co. offers the broadest range in styles and materials in the San Francisco Bay area. Vinyl, fiberglass, and aluminum, French Doors, bay windows and much more. Stop by our showroom to see our selection

QUALITY WORKMANSHIP
Alexander Company provides the highest quality in window and door installation. We do not sub-contract out our installations!

Our products are installed by highly-skilled, in-house craftsmen so that we can ensure your replacement windows will provide outstanding performance for years to come.

SATISFIED CUSTOMERS
"I am extremely happy with [Alexander's] work. They were genuinely concerned for my needs and very trustworthy and reliable."

- Susanna T., Redwood City

INSTALLATION MASTERS
Get the assurance of  a trained window installer.

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ENERGY STAR
We have a wide selection of Energy Star replacement windows and doors that can save up to 15% on your heating and cooling costs and protect your fabrics from sun damage.

Welcome to Alexander Co

Window Replacement in San Francisco

Proudly Offering Door

Replacement & Installation

We are also licensed to do all general construction work as well. Click HERE for details