A three-car garage is the most popular size we coat in Katy’s master-planned communities. Pricing depends on square footage, slab condition, and the finish you choose, but here is a realistic breakdown of what drives the cost.
How Square Footage Sets the Baseline
A typical Katy three-car garage runs roughly 600 to 750 square feet, sometimes more with tandem or oversized bays. Since coatings are priced largely by area, that footprint is the starting point. See our detailed cost per square foot guide for current ranges by finish.
Slab Condition and Prep
The biggest variable beyond size is slab condition. A clean, sound slab needs only grinding, while one with cracking, spalling, or oil staining requires extra crack repair and degreasing. Proper preparation is non-negotiable for a floor that lasts.
Finish and System Choices
A solid-color floor is the most affordable; a full-flake broadcast is mid-range; a metallic epoxy floor is premium. A polyaspartic topcoat adds cost but extends life and adds UV stability. Compare options in metallic vs. flake.
Getting an Accurate Number
The only way to price a three-car job accurately is an on-site measurement and slab inspection. We provide that free, with a written quote and no surprises. Learn how long the floor lasts to weigh the long-term value.
Get Your 3-Car Garage Quote
Free on-site measurement and a firm written price for your Katy three-car garage.
Get a Free QuoteFrequently Asked Questions
How big is a typical 3-car garage?
Most Katy three-car garages are about 600 to 750 square feet, though tandem and oversized layouts can be larger. Square footage is the main driver of price.
What raises the cost the most?
After size, slab condition matters most. Cracking, spalling, and oil staining add prep work. Premium finishes like metallic also increase the price.
Is a polyaspartic topcoat worth the extra cost?
For most homeowners, yes. It adds UV stability and durability, extending the life of the floor in a hot Katy garage.
How do I get an exact price?
Call (281) 503-5313 for a free on-site measurement and written estimate.