Interactive Specs Tool

Dimension & Foundation Estimator

Select your desired dimensions, style, and gauge preferences below to instantly review standard concrete depth requirements and roof alignment rules.

Interactive Garage Sizing & Prep Calculator

Configure your desired dimensions to get structural recommendations, concrete slab requirements, and local code checks instantly.

Select Project State

Loads engineering data (snow load, wind speed, permits) for the selected state.

Select Width (Feet)

12' = Single Car | 18'-24' = Double Car | 30'+ = Triple Car / Commercial

Select Length (Feet)

Standard structures extend in 5-foot increments.

Select Leg Height (Feet)

8'-10' = Standard Vehicles | 12' = Boat / Truck | 14'+ = RVs / Lifts

Select Steel Gauge (Thickness)

Structural Recommendations

Garage Footprint24' Wide × 30' Long × 10' High

Recommended Roof StyleVertical Roof Style

30-foot-long starting layout: vertical panels improve drainage and reduce debris buildup.

Concrete Foundation Specs

Slab Dimension: 24' × 30'
Slab Thickness: 4 inches minimum for this estimator profile
Perimeter Footing: 12" wide × 12" deep grade beam

California Code Check

At 720 sq ft, this starting layout exceeds California's 120 sq ft accessory-structure exemption baseline. Confirm city or county permit, setback, and engineering requirements before ordering.

Read Permitting Guide →