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IBC Allowable Height and Area Calculator (Non-Separated Mixed Occupancy)

**Updated - You can now choose between the 2015, 2018, 2021 and 2024 IBC

A few notes:
  • Calculator is for single occupancy or non-separated mixed occupancy buildings. Separated mixed-occupancy functionality is coming later.
  • There are some error notes that I've programmed in (for example, using an NFPA 13R sprinkler system in a non-residential occupancy), but the calculator is not foolproof. Some background code knowledge is needed.
  • Allowable area results are displayed for no frontage increase and a full frontage increase.
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The views, opinions, and information found on this site represent solely the author and do not represent the opinions of any other party, including the author's employer and the International Code Council, nor does the presented material assume responsibility for its use.  Local codes and amendments may vary from the code requirements described herein. Fire protection and life safety systems constitute a critical component of public health, safety and welfare and you should consult with a licensed professional for proper design and code compliance.