1. What Is Lot Coverage?

Lot coverage is a zoning term that refers to the percentage of a property that is covered by buildings or structures. It's an important metric in urban planning and zoning regulations that helps control density and ensure adequate open space on properties.

2. How Does The Calculator Work?

The calculator uses the lot coverage formula:

Where:

• Building Area — Total area covered by all buildings and structures on the lot (ft² or m²)
• Lot Area — Total area of the entire property lot (ft² or m²)

Explanation: This calculation determines what percentage of a property is occupied by buildings versus open space.

3. Importance Of Lot Coverage Calculation

Details: Lot coverage calculations are crucial for compliance with local zoning regulations, property development planning, stormwater management, and maintaining neighborhood character. Many municipalities have maximum lot coverage requirements to ensure adequate permeable surfaces for drainage and to prevent overcrowding.

4. Using The Calculator

Tips: Enter the total building area and lot area in the same units (typically square feet or square meters). Ensure the building area does not exceed the lot area. The calculator will automatically compute the percentage of lot coverage.

5. Frequently Asked Questions (FAQ)

Q1: What typically counts as "building area" in lot coverage calculations?
A: Building area typically includes the footprint of all structures on the property, including the main building, garages, sheds, and sometimes decks or patios with solid surfaces. Check local regulations for specific inclusions.

Q2: What are typical maximum lot coverage percentages?
A: Maximum lot coverage varies by zoning district but typically ranges from 25-50% for residential areas and can be higher for commercial districts. Always check local zoning ordinances.

Q3: How does lot coverage differ from floor area ratio (FAR)?
A: Lot coverage measures the footprint of buildings on the ground, while FAR measures the total building area across all floors relative to the lot size. A two-story building covering 25% of the lot would have 25% lot coverage but 50% FAR.

Q4: Are driveways and walkways included in lot coverage?
A: Typically, impervious surfaces like driveways and walkways are not included in building coverage but may be regulated under separate impervious surface coverage limits.

Q5: Why is lot coverage important for stormwater management?
A: Higher lot coverage means less permeable surface area for rainwater absorption, which can increase stormwater runoff and potential flooding. Regulations help manage this environmental impact.