
Window Expansions For Your San Antonio Home
Whether you want to make your current windows larger or replace them with different window types, transform your space with custom-fit windows and expert installation.
Contact Southwest Exteriors today to schedule a commitment-free consultation with a trusted San Antonio window and door specialist since 1989.
What We Do
- Full window removal
- Frame and header construction
- Window installation
- Trim, sheetrock and siding repair
What We Don't Do
- Electrical
- Plumbing
- Window Expansions and Conversions
Custom Replacement Windows with Expert Installation
Expanding your windows or simply transforming them into a new opening shouldn't have to be stressful. With Southwest Exteriors, our expert design consultants will help guide you to the right products and services for your home, whether that includes us or not.
Our high-quality windows from Marvin, ProVia, Anlin and more offer exceptional quality and style, with various window types like
- Single and Double-Hung
- Casement
- Awning
- Slider
- Bay and Bow
- Picture
- Speciality Shapes
Choose the best window type to fit your space and customize it to fit you. With Southwest Exteriors, converting your door into a window is a breeze.

Hear From Our Happy Customers
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They communicate every step of the way. The installers were very pleasant & professional. They were careful with the surroundings & cleaned everything before leaving.- Jill C.
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The work was done on time with no issues and the entire team was responsive and dedicated to making us happy with the final results. Highly recommend them.- Scott & Kim H.
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We met with three door companies before choosing SW Exteriors. They were very professional and personable. It was such an easy process and they are on top of their communication…I never had to follow up!- Brooke E.
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The installers were very polite, very professional, and I am very pleased with your company.- Luisa G.
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They worked seamlessly together in tandum. They were fast, efficient, and hard working. I was extremely impressed that it only took them a few hours to replace 9 VERY OLD windows!- Mandy R.
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From start to finish, things were communicated and happened on time. Crews were friendly and respectful of my premises. And I absolutely love my casement windows!- Kim I.
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This was one of the best experiences I have had with a home construction contractor. The install crew was extremely efficient, and the teamwork was amazing to see. After 10 years, the windows look like new. Extremely pleased.- Bill J.
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They were professional and informative, not salesy, in the initial meeting, answering all my questions and showing me all options. They actually listened to what I wanted!- Shirley S.
