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Southlake Window Replacement

Quality Windows & Doors since 1979

Serving Southlake, Texas

We love our friends in Southlake. Each year we help members of your community find quality replacement windows and exterior doors. Chances are, you know someone that has worked with us. When you are ready to begin your window or door project, reach out to us. We'd love to be your partner!

Why Brennan

For over 40 years, Brennan has offered professional quality window and exterior door replacement services. 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. Brennan offers a wide selection of products, including major brands and our exclusive custom window line. Ask about our interest-free financing and price-match guarantee.

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.

I love my Brennan windows, very trustworthy local company....

Emily A. from Southlake, 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
Karen T. from Southlake, TX

Family Owned & Operated

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.

Frequently Asked Replacement Window & Door Questions

What should I look for when buying replacement windows?

There are four key factors to consider when purchasing replacement windows; efficiency, warranty, installation, and quality.

LEARN MORE: Replacement Windows Checklist

What do windows cost?

It’s difficult to give anyone a general price estimate because there are many factors that affect the cost of a window. Unless you’re purchasing stock windows from a big box store, window costs will vary based on the manufacturer, quality, materials used, style, and the type of glass package included. We have included a pricing example for Andersen 100 Series windows in the post linked below.

LEARN MORE: How Much Do Andersen 100 Series Windows Cost?

Do I need replacement windows?

Many homeowners choose to update their windows for aesthetic reasons but there are other reasons why you would need to update your window. If you’re dealing with some of these problems, you should buy replacement windows:

Condensation between the glass.
The windows are difficult to open or close.
You’ve spotted rot around or on the window.

LEARN MORE: 5 Reasons to Replace Your Windows

What should I look for when buying a new front door?

There are several key factors to consider when choosing a new front door, including the style, the door's material, the pros and cons of each, and the manufacturer.

LEARN MORE: Front Door Brands and Materials

Your Local Window & Door Company

Looking for local window companies in Southlake?

Our local and family-owned business is ready to help.

Our headquarters is located in Arlington, Texas.

News, Product Reviews, and Insights

What Does the AAMA Certification Mean for Windows?

Wondering what AAMA Certification is for windows? The American Architectural Manufacturers Association sets industry quality and performance standards.

3 Min Read

Window Replacement vs Glass Replacement

Deciding whether to repair or replace your windows? You’re not alone. Find out what the difference is between these two services in this post.

4 Min Read

Tempered Glass vs Laminated Glass

Tempered glass and laminated glass are two of the most common types of safety glass. If you’re in the process of building or upgrading your home you may have already been asked to choose some safety glass for some of your windows and doors.

5 min read

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Need Help?

Email an expert at hello@brennancorp.com

or call us at 817-860-9767

DFW 2100 E Randol Mill Rd. Arlington, Texas 76011

©2025 Brennan Enterprises. All rights reserved. Product specifications are believed to be accurate at the time of original publication. Consumers should verify specifications prior to purchase rather than rely on information on this website, which is not intended to be a final specification. Projected lead times are based on current production volumes and order backlogs, however there are still some lingering supply chain challenges and disruptions that are difficult to predict or model.

“Excellent job. Quality installation. Very professional.” — Denise from Carrollton