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Collin County Window Replacement

Customized Solutions for Your New Windows & Doors

Free Consultation

Brennen Proudly Serves Collin County, Texas

We’re in your neighborhood, Collin County, Texas! Although our main office is based in Arlington, we proudly serve Parker County. Our team of consultants and installers travel all over the metroplex each day to serve customers like you.

As you begin your home improvement journey, you want a reputable installer that you can trust with your home. At Brennan, we realize that every home and project is unique. We’re here to serve you and help you find the perfect solution for your windows and doors. You have the power to choose every detail of your new windows and our experienced consultants are here to educate you every step of the way. Don’t let someone sell you replacement windows; let us help you design new windows that are the perfect fit for your home.

Free Consultation

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 We’re in your neighborhood Collin County, Texas

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Window Installation

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Exterior Door Installation

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Commercial Window and Door Installation

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Custom Window and Door Installations

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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 in DFW, including the City of Double Oak. 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. Check out our 95% satisfaction rate and read what your friends and neighbors have to say about us:

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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 below 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.

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Service Area

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Service Area for Collin County, TX

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Collin County Window Replacement

Brennen Proudly Serves Collin County, 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 We’re in your neighborhood Collin County, Texas

Window Installation

Exterior Door Installation

Commercial Window and Door Installation

Custom Window and Door Installations

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

Service Area for Collin County, TX

Brennan Enterprises Headquarters

Frequently Asked Replacement Window & Door Questions

Who is Brennan Enterprises?

Does the price include installation?

How do I know if my door needs to be replaced?

What if I want to expand an existing window or door?