R-3 Zoning in Phoenix, AZ

[Jessica Jay-Maleski]

Hello! I am a little embarrassed to ask this but after researching R-3 Zoning, I have a few questions:

Information:

     - I have a lot, nearly 6k square feet, in Phoenix AZ and it is zoned R-3

     - It currently has two duplexes on it for a total of four units

     - At least one of the units is an addition

     - I am uncertain as to the permits, however I did purchase it this way and there were no questions or issues in inspection or appraisal

     - I am considering adding another unit or two, or at the very least expanding a unit to add another bedroom.

Questions:

     - In reading the coding, I am not sure where I land (Conventional or Planned Residential Development - I am assuming conventional but unsure of the distinction)

     - I am a little confused as to whether the rules for dwelling unit density are specific to number of units or number of structures

Any feedback would be so very appreciated!