Floor Area Ratio (FAR) Calculator
Calculate maximum building floor area from lot size and FAR zoning limits, accounting for setbacks and lot coverage requirements.
Inputs
sq ft
ft
ft
ft
ft
ft
Results
Max Floor Area (by FAR)
40,000 sq ft
Planned Floor Area
48,000 sq ft
Actual FAR2.4
FAR ComplianceNo — exceeds FAR limit
Building Footprint12,000 sq ft
Open Space8,000 sq ft
Open Space %40%
Potential Residential Units53
Est. Building Height48 ft
Coverage CompliantYes
How to Use This Calculator
- Enter Lot Area, FAR Limit, and Number of Floors.
- Set Max Lot Coverage, Lot Width, and Lot Depth.
- Adjust Front Setback, Side Setback as needed.
- Review Max Floor Area (by FAR) (sq ft) and Planned Floor Area (sq ft).
- Use Actual FAR and FAR Compliance to inform your decision.
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