I tried looking for Indiana building code regarding bathroom door sizes. I seem to be getting contradictory measurements from my searches. Some say 28” width is fine, others say 32” required, 34 recommended. Can anyone shed some light on this and maybe point me to a reputable code document? I live in Lafayette, IN (zip 47904) if that helps. Edit: current door is 28”.
Your bathroom door can be any width you want.
The Code only refers to one door in a “dwelling” and it’s regarding an “egress” door...and it must be a minimum of 32” wide. (See 2017 edition of IRC Section R311.2)
References to IBC or ICC is not appropriate as they refer to commercial, institutional, etc. buildings, not dwellings.
The IBC (sometimes referred to as ICC) - International Building Codes is what you should look at it.
Your local county permitting office might even have an online guide as to what codes they adhere to and possibly even some code standards online.
As a general rule of thumb and from my understanding 32" is the minimum afforded by the IBCC (to the best of my knowledge) and 34 has been recommended. Your home might have been built before the adoption of these rules by your county or state and thus fall into a category of 'unless you remodel it you can leave it as it is'.
I am guessing you would like to know this because you are installing a new door.
I would like to suggest that you install a 36 inch door.
You might be thinking oh my gosh why ?
Maybe currently (or possibly in the future) you have a friend or family member that will visit and they are bound to a wheel chair, access by Wheel Chair is much easier at 36 inches.
Actual Code Reference:
1008.1.1 Size of doors.
The minimum width of each door opening shall be sufficient for the occupant load thereof and shall provide a clear width of 32 inches (813 mm). Clear openings of doorways with swinging doors shall be measured between the face of the door and the stop, with the door open 90 degrees (1.57 rad). Where this section requires a minimum clear width of 32 inches (813mm) and a door opening includes two door leaves without a mullion, one leaf shall provide a clear opening width of 32 inches (813mm).
This is REALLY hard to come by so you should download it and save it in a good place - who knows how long this link will be good for.
EDIT 7-09-2018 Due to a comment I have decided to make CLEAR 32 inches is the minimum according to the code of 2009. Indiana has adopted the code of 2012 and so a link is provided
International Building Code (IBC): Applies to almost all types of new buildings
International Residential Code (IRC): Applies to new one- and two-family dwellings and townhouses of not more than three stories in height.
International Existing Building Code (IEBC): Applies to the alteration, repair, addition or change in occupancy of existing structures.The ICC publishes new editions of the International Codes every three years and many states and localities have adopted them since the first editions were issued in 2000. In 2000, the three regionally-based model code organizations (BOCA National Code, SBCCI Standard Code and ICBO Uniform Code) combined together to form the ICC.
The Indiana Building, Fuel Gas, Mechanical and Fire Prevention Codes are based on the 2012 IBC, IFGC, IMC and IFC. The 2003 Indiana Residential Code is based on the 2003 IRC and the 2006 Indiana Plumbing Code is based on the 2006 IPC.
2012 International Building Code 2012 International Fire Code 2012 International Fuel Gas Code 2012 International Mechanical Code 2012 International Plumbing Code 2003 International Residential Code
The above was a direct copy from the website linked to - there seems to be an error on the IPC adoption 2006 in the statement vs 2012 in the bullets.
BONUS for Others Searching on their particular state
How can I know if my state adheres to the International Codes of the ICC such as IBC (International Builders Code), IRC (International Residential Code), IPC (International Plumbers Code), etc.. ?
EDIT - The above is inaccurate: for single and dual dwellings see below 2012: