1. What is Floor Area Ratio (FAR)?

Floor Area Ratio (FAR) is a key zoning regulation that determines the maximum amount of floor space that can be built on a property. It's the ratio of a building's total floor area to the size of the piece of land upon which it is built.

2. How Does the Calculator Work?

The calculator uses the simple FAR formula:

Where:

• Total Floor Area — Sum of all floor areas in the building (sq ft)
• Lot Area — Total area of the plot of land (sq ft)

Explanation: FAR helps determine building density and controls the scale of construction relative to lot size.

3. Importance of FAR Calculation

Details: FAR is crucial for urban planning, determining building size limits, maintaining neighborhood character, and managing infrastructure demands. It affects property values and development potential.

4. Using the Calculator

Tips: Enter total floor area and lot area in square feet. Both values must be positive numbers. The calculator will output the FAR as a unitless ratio.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical FAR value?
A: FAR values vary by zoning district, typically ranging from 0.2 for single-family homes to 15+ for high-density urban areas.

Q2: Does FAR include basements?
A: It depends on local regulations - some jurisdictions exclude below-grade spaces from FAR calculations.

Q3: How does FAR differ from building coverage?
A: Building coverage measures footprint percentage, while FAR accounts for total floor area across all levels.

Q4: Can FAR be increased?
A: Sometimes through zoning variances, density bonuses, or transfer of development rights, subject to local laws.

Q5: Why do cities regulate FAR?
A: To control density, preserve light/air, manage infrastructure capacity, and maintain neighborhood character.