Enter the built density (dwelling units/area) and the typical density (dwelling units/area) into the Density Bonus Calculator. The calculator will evaluate the Density Bonus. 

Density Bonus Formula

The following two example problems outline the steps and information needed to calculate the Density Bonus.

DB = (BD-TD) / TD * 100


  • DB is the Density Bonus (%)
  • BD is the built density (dwelling units/area) 
  • TD is the typical density (dwelling units/area) 

To calculate the density bonus, subtract the typical density from the built density, then divide by the typical density and multiply by 100.

How to Calculate Density Bonus?

The following steps outline how to calculate the Density Bonus.

  1. First, determine the built density (dwelling units/area). 
  2. Next, determine the typical density (dwelling units/area). 
  3. Next, gather the formula from above = DB = (BD-TD) / TD * 100.
  4. Finally, calculate the Density Bonus.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

built density (dwelling units/area) = 90

typical density (dwelling units/area) = 80

DB = (BD-TD) / TD * 100 = ?