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Westlake Window Replacement

Customized Solutions for Your New Windows & Doors

Free Estimate

Brennan Proudly Serves Westlake, Texas

We're proud to offer professional window and door sales and installation services to homeowners in Westlake. We've worked in your community in the past and would love to be of service to you and your neighbors. With our large selection of windows and doors, you are sure to find something that you will love. If you aren't sure where to begin, our knowledgeable staff can help you. When you're ready to start your project give us a call, we look forward joining you on your home improvement journey.

Free Estimate

Let’s give your home a new look.

We offer the best home improvement experience for homeowners. We're a full-service company that handles the entire process. We'll make sure your window or door remodel runs as smoothly as possible so you can get back to enjoying your home. You won't notice we were ever there.

We’ve got the perfect products for your design.

We offer a wide range of beautiful windows and doors to suit your design. All of our window partners offer ENERGY STAR rated solutions.

Affordable options for new construction projects.

Whether you are building a single home or an entire neighborhood, we have the windows your clients will love. Choose from a variety of high-quality and energy-efficient products.

Window and Exterior Door Installation in Westlake, Texas

Window Installation

Boost your home’s energy efficiency and aesthetic appeal with a wide selection of replacement windows.

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Exterior Door Installation

Secure and stylish exterior doors that are sure to make a lasting impression and improve the value of your home.

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Design-Build Windows & Doors

Whether it’s a patio enclosure or wall-to-door conversion our expert team can handle any transformation. Simply put, you dream it, we build it.

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New Construction & Supply Only Products

Quality and competitively priced solutions for architects, builders, contractors and DIYers.

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Why Brennan?

When you are ready to upgrade your home, you need a reputable installer that you can trust. Since 1979, Brennan has offered top-quality service and installations to Texas homeowners.

We are a family-owned business built on trust. We have an A+ rating with the BBB and have been accredited since 1982. That means you can be confident that we’ll take care of you every step of the way.

Free Estimate Learn More About Brennan

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What our customers are saying

We love our new windows! They are a dark charcoal color and they make the home look great. Scott Brennan showed us some great options and we loved working with him. And you will not find a better installer than Howard. We did not have one single issue with the install. We are very pleased.

Landra P. from Arlington, TX

Had a great experience with our complete new window replacement. Many compliments from neighbors. Best decision we made since we bought our house in 1996. Were so happy, we went ahead and also had a new front and back door made and installed. Would whole-heartedly recommend Brennan Enterprises to anyone.

Jay S. from Frisco, TX

I can't say enough good things about this company. From my first call, all the way to installation. They were attentive, professional and prompt. They delivered what I asked for and they went above and beyond to meet our expectations. Use them, you won't regret it.

Dora S. from Northlake, TX

Initially, I had Brennan Enterprises replace some large windows in my house. The windows they sold me are high quality, and they did a great installation job. Soon, I had them come back and replace all the other windows in the house. The windows look and function great.

Brian B. from Southlake, TX

We used Brennan for new windows in our house and went with the Traditions and couldn't be happier! They are very high quality windows and the crew led by Jeremy Delgado did the best work and we're very kind and courteous! Jeremy had to fix up some brickwork that was shortcut during the build and his work was top notch! I will definitely be buying any future windows from Brennan and highly recommend them to anyone who wants quality windows at a fair price!

Joel T. from Grapevine, TX

Your Project Starts Here

Complete the form and a member of our team will reach out to schedule a free project estimate. This can be in-person, on zoom, or by phone.

Brennan Locations

Service Area

Windows & Doors for Texas Homeowners

Brennan Enterprises is a Texas based company. We currently offer our services to homeowners in and near the Dallas-Fort Worth Metroplex and the Greater Houston area.

Westlake Window Replacement

Brennan Proudly Serves Westlake, Texas

Let’s give your home a new look.

We’ve got the perfect products for your design.

Affordable options for new construction projects.

Window and Exterior Door Installation in Westlake, Texas

Window Installation

Exterior Door Installation

Design-Build Windows & Doors

New Construction & Supply Only Products

Why Brennan?

What our customers are saying

We love our new windows! They are a dark charcoal color and they make the home look great. Scott Brennan showed us some great options and we loved working with him. And you will not find a better installer than Howard. We did not have one single issue with the install. We are very pleased.

I can't say enough good things about this company. From my first call, all the way to installation. They were attentive, professional and prompt. They delivered what I asked for and they went above and beyond to meet our expectations. Use them, you won't regret it.

Initially, I had Brennan Enterprises replace some large windows in my house. The windows they sold me are high quality, and they did a great installation job. Soon, I had them come back and replace all the other windows in the house. The windows look and function great.

Your Project Starts Here

Helpful Resources

We Did It! Voted DFW’s Favorite Window Company | 2025

Marvin Ultimate Collection – What You Need to Know

High-End Entry Doors: Are They Worth the Investment?

Service Area

Windows & Doors for Texas Homeowners

Brennan Enterprises Headquarters

Frequently Asked Replacement Window & Door Questions

Do you do glass replacement?

What do exterior doors cost?

What are your office hours?

Do you work with both homeowners and builders?