How To Use Prevailing Setback Calculator
- Enter the lot number, the frontage dimension and the corresponding front yard setback for each lot. Enter the frontage and setback dimensions in feet using decimals (e.g. 23.69).
- For vacant lots leave the setback blank.
- For buildings built up to the front lot line, enter 0 in the setback field.
- Click the "Calculate" button.
- If the frontage of all of the lots with front yards varying no more than 10' from each other is less than 40% of the total frontage, then there is no prevailing setback. In that case the front yard is a percentage of the depth of the lot according to the zoning of the lot as prescribed in the Zoning Code.