Window replacement in Katy, Texas.
Katy is one of the biggest window markets in Texas, with Cinco Ranch alone spanning three decades of construction. Nottingham Country and Kelliwood are 70s and 80s; Cinco Ranch, Grand Lakes, and Seven Meadows are 90s and 2000s; Cane Island and the newer sections are still under builder windows.
- 20+ years in Houston
- Family-owned
- Our own crews
- Lifetime warranty
- 0% financing

The windows, the weather, and what an honest estimate finds.
Nottingham Country and Kelliwood homes commonly have original wood or aluminum windows with rot and single-pane glass. Early Cinco Ranch sections are at seal-failure age with fogged panes and stuck sashes. Later sections and Firethorne mostly want targeted upgrades.
Katy's flat, open terrain delivers strong west sun with limited shade in most subdivisions. High-performance Low-E glass on west and south elevations is where the savings are. Cinco Ranch and Grand Lakes associations have exterior guidelines, and our standard colors are approved.
Katy is a regular route for our estimators. Weekday and Saturday appointments are available.
Neighborhoods we serve in Katy
- Cinco Ranch
- Grand Lakes
- Seven Meadows
- Kelliwood
- Nottingham Country
- Firethorne
- Cane Island
- Old Katy
ZIP codes
77449 · 77450 · 77493 · 77494
Styles we install in Katy
Double Hung Windows
Both the upper and lower sashes glide open, giving you precise control over airflow and unrivaled access for cleaning from inside.
Single Hung Windows
On a single hung window only the lower sash raises and lowers; the upper sash is fixed in place. Fewer moving parts means a tighter, more affordable window with the same classic look as a double hung.
Casement Windows
Casement windows pivot outward on a side hinge, opening fully to capture cross-breezes and seal tightly when closed — one of the most energy-efficient styles available.
Bay & Bow Windows
A bay window combines three units at angled returns. A bow uses four or more in a gentle arc. Both project outward to expand the room and frame a panoramic view.
Picture Windows
A single uninterrupted pane, fixed in place. Picture windows offer the most glass area per dollar — and the cleanest, most modern look.
Sliding Windows
Sliding windows operate side-to-side on a smooth track, opening up to half of the total window area with effortless one-finger motion.
Specialty Windows
Half-rounds, full circles, octagons, trapezoids, and gothic arches — specialty windows turn gable ends, transoms, and entryways into architectural statements.
The kind of work that earns
the next referral.
“Bluebonnet Exteriors were wonderful! They gave a competitive quote and offer very good quality windows. The installation team with Carlos was also great! They taped everything off well, took their time installing - did not rush through, and cleaned up very well when they were finished! We have received so many compliments and questions on what company we used. I would definitely recommend! Thank you for our beautiful windows!”
Brittany Kleinpeter
Google review
Window installation
“I was surprised at the low price that was given to me, by Bluebonnet Exterior. They didn't take a lot of my time with the quote. I am very happy with the windows they installed.”
Ricardo Hammonds
Google review
Window installation
“I had my whole house stripped down, installed insulation put sheathing and installed Hardie Plank plus paint too! The crews were great, they took their time didn't try to rash! Both my wife and me are very pleased with the results! We highly recommend Blue bonnet Exterior!”
Juan Fernandez
Google review
James Hardie siding
Good to know before your estimate.
Do you work in Cinco Ranch and other Katy HOAs?
Yes. We install in Cinco Ranch, Grand Lakes, Seven Meadows, Kelliwood, and Firethorne regularly and provide the product documentation their architectural committees ask for.
Do you offer financing?
Yes. Qualifying projects can use 0% interest plans with no money down and terms up to 60 months. Most approvals take minutes and don't affect your credit score.
How does a free in-home window estimate work?
One of our own estimators comes to your home, measures every opening, shows you real VistaMark samples, and gives you an exact all-in price before leaving. It takes about an hour, and there's no pressure to decide on the spot.
We also replace windows in
Katy homeowners
Get an exact price on your Katy windows.
Free in-home estimate. Exact all-in price before we leave. Our own crews, never subcontracted.

