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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

How are replacement windows measured?

We take multiple horizontal and vertical measurements of the window to determine the smallest points of the window as well as the window depth. That allows us to order a properly sized window that’s not too big for the opening and not small enough to leave big gaps around the window frame.

Do you offer repair services?

We do not repair existing doors or windows. If you would like a free estimate for replacement windows or doors, please give us a call.

If you are an existing client and are having an issue with a product we’ve ordered and installed please contact our service department for assistance.

LEARN MORE: Dealing with Sticking Windows and Doors.

What’s the window buying process like?

The window buying process is easier if you already have an idea of what type of windows you want. Consider how they should work and how you want them to look. Once you have an idea of what you’re interested in, you’ll schedule a meeting with a window consultant to discuss product options, measurements, and installation. After you sign a contract for your project your windows are ordered from the manufacturer and installation is scheduled after your windows are delivered.

LEARN MORE: 3 Things You Should Consider When Replacing Windows

How do you buy windows?

There are four primary considerations when purchasing new windows for your home; the materials used in the frames, type of windows, glass package, and your budget. Think about what you like and want then contact your local window pros to schedule a consultation.

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

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

Should I Get Patio Doors with Built-In Blinds?

Patio doors with built-in blinds offer convenience and durability. They might be a great option for homes with kids and pets but they aren't for everyone.

4 Min Read

Window Balances 101

A primary reason homeowners replace their windows is because there are windows in their homes that don't open easily or stay open. The most common cause of these problems is a defunct window balance.

12 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