Quick Answer: Concrete flooring in San Jose costs $3-$15 per sq ft depending on finish type: epoxy coating (for garage slabs) runs $3-$7/sq ft; acid stained concrete runs $4-$10/sq ft; polished concrete runs $8-$15/sq ft for a mirror-like finish; decorative stamped concrete (for patios) runs $12-$25/sq ft. A 400 sq ft garage epoxy floor costs $1,200-$2,800. A 200 sq ft stained concrete interior floor costs $800-$2,000. Polished concrete for an open-concept living area (500 sq ft) costs $4,000-$7,500.
Concrete Flooring Cost Guide for San Jose 2025
Helpful Resources:
| Concrete Floor Type | Cost Per Sq Ft | Best Application |
|---|---|---|
| Epoxy coating (solid color) | $3 – $5 | Garage floors, utility areas, workshops |
| Epoxy coating (flake or metallic) | $5 – $8 | Upscale garages, commercial spaces, ADU floors |
| Acid stain (patina look) | $4 – $8 | Interior slabs, retail, open-concept homes |
| Water-based stain (more color options) | $3 – $7 | Interior residential, more color control than acid stain |
| Polished concrete (grinding + densifier) | $8 – $15 | Modern homes, commercial, ADUs — high-gloss durable finish |
| Stamped concrete (patio/pool deck) | $12 – $25 | Outdoor patios, pool decks, driveways — mimics stone/brick/tile |
| Microtoppings (self-leveling overlay) | $10 – $18 | Applied over existing slab to hide cracks; very thin and smooth |
Polished vs Epoxy vs Stained — Which Is Best?
- Polished concrete: Ground and honed with progressively finer diamond pads, then densified with a penetrating chemical hardener. The concrete itself is refined — not coated. Will never peel, chip, or delaminate. Very durable but slippery when wet unless anti-slip treatment is applied. Best for modern, open-plan homes and ADUs
- Epoxy coating: A resin coating bonded to the concrete surface. Can chip or delaminate over time in high-traffic or outdoor areas. Best for garages (excellent chemical resistance to oil and automotive fluids). Much less expensive than polished concrete for garage applications
- Stained concrete: Acid or water-based stain reacts with the concrete surface (or sits on top of it) to add color. Does not change the texture of the surface. Must be sealed to protect the stain. Creates a natural, variegated appearance that many homeowners prefer to a perfectly uniform floor
Quartz Construction installs polished concrete, epoxy, stained concrete, and stamped concrete floors throughout San Jose. Get a free estimate. CSLB #1003436 | Call (650) 749-7436.
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