Calculate cubic yards, bags needed, and Orange County-accurate ready-mix costs for driveways, patios, foundations, garage slabs & footings in Irvine, CA.
Enter dimensions for instant Irvine volume, bag count, and material cost.
Driveway: 4 in., 3,000 PSI. No air entrainment. Seismic SDC D — rebar required. Expansive clay soils common in Irvine — compact base, pre-soak. CSLB contractor required. CBC 2025 compliant.
Driveway 4 in · Garage 4–5 in · Patio 4 in · Foundation 6 in · Footings 12+ in deep
Irvine is one of California's most affluent and fastest-growing planned cities, located in central Orange County. As a master-planned community developed by the Irvine Company since the 1960s, it features meticulously regulated construction standards under the 2025 California Building Code — effective January 1, 2026 per Orange County. All concrete work in Irvine must comply with Seismic Design Category D (near the Elsinore and Newport-Inglewood fault systems), and Irvine's characteristic expansive clay soils in inland residential areas require special attention to subgrade preparation and foundation design.
Exterior flatwork: 3,000 PSI minimum · No air entrainment needed (SoCal has no freeze-thaw) · W/C ≤ 0.50 · Driveways: 4 in. minimum · Garage floors: 4 in., vapor barrier required over Irvine clay soils · Foundations: 3,000–4,500 PSI per geotech report; expansive clay soils require pre-soak, over-excavation, and compacted base; CBC SDC D seismic provisions mandatory · Footings: 12 inches below grade per OC/FBC — very shallow; must bear on stable native soil · Hot weather: ACI 305 required May–October for Irvine's 95°F+ summer heat · All contractors must hold CSLB license — verify at cslb.ca.gov.
Irvine lies within Southern California's active seismic zone, near the Elsinore Fault, Newport-Inglewood Fault, and broader San Andreas Fault System. All concrete slabs, foundations, and footings in Irvine must comply with CBC SDC D seismic provisions under ACI 318 Chapter 18 — this means rebar reinforcement is mandatory on virtually all concrete work, not optional. Any foundation over 1,200 sq ft or located in a mapped liquefaction zone requires a full geotechnical investigation per CBC Section 1803. Irvine Company's master-planned areas have detailed soils reports on file — your CSLB contractor can reference these for your neighborhood.
Standard 20×20 ft at 4 in. = ~5.5 cu yd of 3,000 PSI concrete. Class II base compacted over Irvine clay. #3 or #4 rebar required per SDC D. Installed cost: $11–$16/sq ft in the OC market. Pour in early morning May–October. Apply penetrating sealer after 28-day cure.
20×22 ft at 4–5 in. = ~5.4–6.7 cu yd. Vapor barrier mandatory over Irvine's clay-rich soils — moisture transmission through unsealed slabs is a leading cause of epoxy coating failure. 3,000–4,000 PSI. Epoxy or acrylic seal after 28-day cure. Installed: $12–$18/sq ft OC market.
Irvine's inland residential areas have significant expansive clay soil — soils that swell when wet and shrink when dry, causing slab heave and cracking. CBC and Irvine building code require pre-saturation of clay subgrade before pouring, engineered compacted base courses, and CBC SDC D structural design. A geotechnical report is required for all new foundations in Irvine per City of Irvine Community Development.
Measure length and width in feet, thickness in inches. Always add 10% — Orange County short-load fees run $175–$320/ticket from Southern California suppliers.
Expansive clay soils: Pre-soak subgrade to 90% saturation depth before pouring — dry clay will absorb water from fresh concrete, causing premature stiffening and cracking. Hot weather (ACI 305): Irvine summers hit 95–100°F — pour early AM, pre-wet forms and subgrade, use set retarder for large pours, apply curing compound immediately. Seismic SDC D: Never omit rebar — CBC requires it for all Irvine concrete. Santa Ana winds: High evaporation rates during fall Santa Ana wind events can cause plastic shrinkage cracking — reschedule pours when wind speeds exceed 15 mph with low humidity. CSLB verification: Always verify contractor license at cslb.ca.gov before signing any contract.
Current Orange County ready-mix pricing: $155–$185/yd. Installed costs exclude excavation, base, permits, and rebar.
| Project | Size | Thickness | Cu Yards | Material | Installed Est. | Notes |
|---|---|---|---|---|---|---|
| Driveway | 20×20 ft | 4 in. | ~5.5 yd | $924 | $2,400 – $3,800 | 3,000 PSI · SDC D Rebar |
| Garage Floor | 20×22 ft | 4–5 in. | ~5.4–6.7 yd | $908–$1,126 | $2,600 – $4,200 | 3,000 PSI + Vapor |
| Patio Slab | 16×20 ft | 4 in. | ~4.4 yd | $739 | $1,700 – $3,000 | 3,000 PSI · CBC 2025 |
| Foundation Slab | 1,500 sq ft | 6 in. | ~18.5 yd | $3,108 | $10,000 – $19,000 | Geotech · SDC D · Clay |
| Sidewalk | 4×40 ft | 4 in. | ~2.0 yd | $336 | $900 – $1,600 | 3,000 PSI · CBC 2025 |
| Pool Deck | 20×30 ft | 4 in. | ~8.1 yd | $1,361 | $3,500 – $7,000 | Broom / Stamped OC |
| Commercial | 40×60 ft | 6 in. | ~44.4 yd | $7,459 | $20,000 – $38,000 | 4,000–5,000 PSI · Eng. |
Verify permits, CSLB licenses, and site conditions before any Irvine pour.
The City of Irvine Community Development Department manages building permits, plan check, and inspections for all residential and commercial concrete under the 2025 CBC. Required for foundations, footings, retaining walls, pool decks, and structural slabs. Can provide guidance on geotechnical requirements for Irvine's expansive clay soil zones and seismic SDC D provisions for your specific neighborhood and Irvine Company planning area.
CityofIrvine.orgThe California Contractors State License Board (CSLB) maintains the state's contractor license database. All Irvine concrete contractors performing work over $500 must hold a valid CSLB license with active workers' comp and liability insurance. Verify any contractor's license status, classification, insurance, and disciplinary history free at cslb.ca.gov. Always request insurance certificates directly from the issuing insurer — not from the contractor.
CSLB.ca.govCalifornia law requires all excavators to call DigAlert 811 at least 2 working days before any digging, drilling, or footing excavation in Irvine. Orange County's planned community infrastructure includes dense underground utility networks — natural gas, water, fiber, electric, and reclaimed water lines are present throughout every Irvine neighborhood. Call 811 or visit digalert.org. The service is free and legally required — never skip it for any Irvine concrete project involving ground disturbance.
DigAlert.org CA 811