Below are the price ranges published by national cost guides for professionally installed garage floor coatings, with the source named on every line. They are a starting point for judging a quote, not a price list, and none of them are Brentwood-specific. Bay Area labor tends to push jobs toward the upper half of a national range, and the only price that applies to your garage is a written quote from a contractor who has seen the slab.
Cost per square foot by system
| System | Installed, per sq ft | Source |
|---|---|---|
| Epoxy (solid or flake) | $4–$10 | H |
| Epoxy, all types | $2–$12; $3–$12 | A; BV |
| Epoxy, two-part semi-gloss (labor + materials) | $8.14–$13.23 | HW |
| Metallic epoxy | $5–$12 | BV |
| Polyurea | $5–$10 | H |
| Polyaspartic | $5–$12 | H |
| Materials alone (any system) | $1–$6 (epoxy) · $2–$6 (polyaspartic) | H |
| Labor alone | $3–$6, about 50–70% of the total | H |
The spread inside each range is mostly prep and finish. A ground, repaired slab with a full-flake broadcast and a polyaspartic topcoat sits near the top; a single pigmented coat over a clean slab sits near the bottom.
Typical totals by garage size
| Garage | Square feet | Garage floor coating (H) | Polyaspartic (H) |
|---|---|---|---|
| 1-car (about 12×24) | 288 | $1,200–$3,500 | $1,400–$4,700 (288–392 sq ft) |
| 2-car (about 20×20) | 400 | $1,600–$4,800 | $2,000–$6,900 (400–576 sq ft) |
| 2-car (about 24×24) | 576 | $2,300–$6,900 | $2,000–$6,900 (400–576 sq ft) |
| 3-car (about 24×36) | 864 | $3,500–$10,400 | $2,900–$10,400 (576–864 sq ft) |
Other guides land in the same neighborhood with different size assumptions. Angi (August 2026) puts a 500-square-foot two-car epoxy floor at about $1,500–$6,000 and a 750-square-foot three-car at $2,250–$9,000, with an overall average job of about $2,526. Bob Vila (2024) gives a national average of $2,441 with most jobs between $1,595 and $3,337. The Home Depot's guide lists a 1-car garage at about $2,500–$3,200, a 2-car at around $4,000, and a 3-car at $4,800–$6,000+ for its professional installs.
How to estimate your own square footage
Measure the inside of the garage wall to wall and multiply length by width. A common East County two-car garage runs about 20 by 20 feet (400 square feet) to 24 by 24 (576). Add the stem walls if you want them coated (a 4-inch band around the perimeter adds surprisingly little area but real labor), and any steps or an apron. Then multiply by the per-square-foot range above: a 500-square-foot floor at HomeGuide's $4–$10 epoxy range is $2,000–$5,000; at the $5–$12 polyaspartic range it is $2,500–$6,000.
What pushes the price up or down
- Slab condition. Cracks, pitting, spalling, and oil stains need repair before any coating. HomeGuide lists site prep and repairs at about $1–$5 per square foot; Angi lists concrete patching at $25–$250 and heavier resurfacing at $1,000–$5,000.
- Moisture. A moisture or hardness test runs about $50–$300 (HomeGuide). A slab that fails it needs a moisture-mitigating primer, which adds cost. Skipping the test is how floors bubble a year later.
- An old coating or paint. Removing a failed coating is grinding time. Some quotes price it as a separate line.
- Finish. Solid color is the base price; flake adds material and a scrape-and-topcoat step; metallic is the top of the range.
- Topcoat chemistry. A polyaspartic or polyurethane clear coat costs more than an epoxy clear coat and is what most installers now specify for hot tires and sun.
- Stem walls, steps, and aprons. Small area, real labor. Ask whether they are included.
- Customizations. HomeGuide lists logos, borders, and similar at about $0.50–$2.00 per square foot.
- Turnaround. One-day polyaspartic systems cost more per square foot than multi-day epoxy systems; you are paying to get the car back sooner.
DIY kits versus professional installation
Angi lists DIY epoxy at about $2–$5 per square foot in materials, and hardware-store kits are far cheaper than that. The difference is not the resin; it is the prep. Kits are usually water-based epoxy applied over acid-etched concrete, which Bob Vila's guide gives a life of about one to three years and Angi three to five, versus 10–20 years for professionally installed solid epoxy. If the garage is a workshop you plan to redo anyway, a kit can make sense. If you want the floor done once, the professional ranges above are the relevant ones. This site does not sell or recommend kits.
How to read a garage floor quote
- It measures the floor and prices stem walls and steps separately.
- It names the prep: grinding or shot blasting, plus crack and joint repair.
- It names every product in the system, coat by coat.
- It says when you can walk and when you can park.
- It states the warranty and what it excludes.
- The contractor's license number is on it. Verify it at cslb.ca.gov (opens in a new tab).
The full comparison checklist is on choosing an epoxy garage floor installer. The reasons some floors fail are on epoxy garage floor pros and cons.
Frequently asked questions
How much does it cost to epoxy a 2-car garage?
HomeGuide (December 2024) puts a 400-square-foot two-car garage at about $1,600–$4,800 and a 576-square-foot one at $2,300–$6,900 for a professionally installed coating. Angi's 2026 figure for a 500-square-foot two-car epoxy floor is about $1,500–$6,000. Polyaspartic systems run higher.
What is the cost of epoxy garage floor per square foot?
About $4–$10 per square foot installed for epoxy (HomeGuide), with Angi's and Bob Vila's overall epoxy ranges at $2–$12 and $3–$12. Polyaspartic is about $5–$12 (HomeGuide). Metallic epoxy is about $5–$12 (Bob Vila).
Are these prices for Brentwood specifically?
No. They are national ranges from the guides named on this page. Bay Area jobs often land in the upper half. Only a written quote from a contractor who has seen your slab reflects your garage.
Is epoxy cheaper than concrete?
A coating goes on top of an existing slab, so it is far cheaper than replacing concrete. HomeGuide lists plain concrete resurfacing at about $3–$7 per square foot and coatings at $4–$12. Replacing a slab is a different, much larger job.
Does an epoxy garage floor increase home value?
There is no reliable published figure for that, so we do not claim one. A clean, coated garage is easier to show and keep, and buyers notice it, but treat it as a use-and-maintenance decision rather than an investment.
Cost ranges and technical notes on this page are general information from the sources named, not a quote or professional advice. Prices vary by slab and system; get a written quote for your garage. See the disclaimer and cost sources.