Measure Existing Clear Width
Doorway widening begins with the actual clear opening, not the nominal door size. Trim, hinges and the door swing all affect how much usable width exists.
The desired width should be based on the project’s intended use and any professional accessibility guidance relevant to the user. A generic web page cannot determine the correct dimension for every person or property.
Wall, Header and Door-Swing Constraints
Widening an opening may affect studs, electrical devices, switches or the header above the door. A non-load-bearing partition and a structural wall are very different projects.
If structural changes are required, appropriate design or engineering review may be necessary. The project should not be treated as simple trim removal until the wall condition is understood.
Trim, Flooring and Adjacent Finishes
A wider opening often requires new casing, baseboard transitions and floor repair where the old jamb sat.
If several doorways or circulation paths need modification, Aging-in-Place & Accessible Remodeling may provide a better coordinated scope than treating each opening independently.
Switches or outlets close to the opening can also be affected when the wall moves. Those electrical changes should be identified early so the carpentry and finish work are not completed before the device location is resolved.