Westminster Window Replacement

5-Star Rated and BBB Accredited

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Brennan Proudly Serves Westminster, Texas

We’re in your neighborhood, Westminster, Texas! Although our main office is based in Arlington, we proudly serve Collin County and have install teams in your area and all of the DFW Metroplex.

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.

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Meet Our Founder

Since 1979, our founder Kerry Brennan has remained at the helm of our company. As a single father, Kerry puts honesty and integrity first and treats his employees and customers like family. He has maintained a full-service operation with everything in-house to ensure that his customers come first in every step of their remodeling journey.

Meet Our Family

We’ve got a team of friendly, caring, responsive individuals. Our team includes experienced craftsmen, product consultants, and a fully staffed office with folks here to help you at every step in your remodeling journey including after the job is done.

The Brennan Story

We've been in business since 1979. As we have grown, we've remained customer-focused and committed to your satisfaction. At the same time, our team has remained a tight-knit family. We have 25 full-time employees and enough install teams to ensure you are taken care of without sacrificing quality or trust.

Window and Exterior Door Installation in Westminster, 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.

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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.

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.

Brennan Enterprises Headquarters

More Cities Explore the Virtual Showroom

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!

Westminster Window Replacement

Brennan Proudly Serves Westminster, Texas

Meet Our Founder

Meet Our Family

The Brennan Story

Window and Exterior Door Installation in Westminster, Texas

Window Installation

Exterior Door Installation

Design-Build Windows & Doors

New Construction & Supply Only Products

Why Brennan?

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

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.

Frequently Asked Replacement Window & Door Questions

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