How To Use Prevailing Setback Calculator

  • Click the "Add Lot" button.
  • 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). Inches to Feet Conversion Chart
  • 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.
  • Please read the Prevailing Setback Calculator Disclaimer
Enter the Lot information after adding rows:
Lot Frontage (ft) Setback (ft)
Results
Number of lots: 0

To find out about Zoning Codes, click here.

To find out about the Prevailing Setback Information Bulletin, click here.



1 in = 0.08 ft
2 in = 0.17 ft
3 in = 0.25 ft
4 in = 0.33 ft
5 in = 0.42 ft
6 in = 0.50 ft
7 in = 0.58 ft
8 in = 0.67 ft
9 in = 0.75 ft
10 in = 0.83 ft
11 in = 0.92 ft
12 in = 1.00 ft


Important Note about Prevailing Setback Calculator

The Purpose of this site is to facilitate the calculations for the front yard requirements of main buildings when the "Prevailing Setback" regulations applies. The accuracy of the results is dependent on the accuracy of the data entered. Only an authorized City of Los Angeles plan check engineer can make a final determination on whether the front yard meet the Zoning Code reqirements.

Other regulations (Hillside Ordinance, Specific Plans, Building Line, Lot Orientation, etc) must be taken into consideration to determine the applicability of the "Prevailing Setback" regulation.

This computer program is intended to be used for information only, The City Of Los Angeles is not responsible for damages that may arise from using this web site.