What is a typical lot coverage maximum?

Residential zones typically allow 40–60% lot coverage; commercial zones 60–90%; industrial 50–80%. High lot coverage increases stormwater runoff, which is why green coverage requirements are increasingly common in modern zoning codes.

What is included in lot coverage calculations?

Lot coverage usually includes the primary structure's footprint plus accessory structures (garages, sheds), covered porches, and attached carports. Driveways, patios, and pools may or may not be included depending on the zoning ordinance.

Lot Coverage Ratio Calculator

Calculate the lot coverage ratio (site coverage ratio) — the percentage of a land parcel covered by building footprints. Lot coverage = (building footprint area / lot area) × 100. Standard zoning metric.

Data set — comma or newline separated

Statistical Results — n = 8

Count (n)8

Sum (Σx)40

Min2

Max9

Range7

Q14

Q35.5

IQR1.5

Mean (μ)5

Median4.5

Mode4

Pop. Variance (σ²)4

Pop. Std Dev (σ)2

Sample Variance (s²)4.571428571

Sample Std Dev (s)2.138089935

Skewness0.65625

Excess Kurtosis-0.21875

How to Use

Enter the values for the scenario you are assessing. Calculate the lot coverage ratio (site coverage ratio) — the percentage of a land parcel covered by building footprints. Lot coverage = (building footprint area / lot area) × 100. Standard zoning metric. Use the lot coverage ratio result to inform your calculation.

Lot Coverage Ratio Calculator

How to Use

Frequently Asked Questions

What is a typical lot coverage maximum?

What is included in lot coverage calculations?