Round Windows: A Timeless Architectural Feature | Southlake

We’re local! Our headquarters is in Arlington, Texas, close to where we were founded. Since 1979, we’ve worked with homeowners across the Texas Golden Triangle. We’re not a national brand, franchise, or private equity–backed. Brennan is a true Texas treasure and we intend to stay that way for generations.

Yes. After you select your products and customizations, you’ll be asked to fill out a contact form. Once you submit your contact information you will receive an on-screen estimate for your window(s) and/or door(s).

We do not offer glass-only replacement services. If you are unsure if you only need your glass replaced or need complete new windows, give us a call. Our company focuses on full window replacement which means we take out the existing windows and install new windows (frames and glass sash).

LEARN MORE: Window Replacement vs. Glass Replacement

Window pricing varies because no two products or companies are exactly alike. Differences in brands, materials, and energy efficiency features, customization options, installation expertise, and even vendor relationships all influence the cost. Additionally, some companies may not include key factors like labor, warranties, or additional fees in their initial quotes. It’s important to compare quotes carefully and consider the overall value—not just the price—when making your decision.