It is best to replace the doors first as the framing on the existing doors will be removed and baseboards will probably have to be removed to install the new door frames. Plus, there is likely to be a bit of damage to the walls during the process of installing new doors.

Or paint walls and when you replace doors and no paint will get on new material. But probably doesn’t matter. When we were painting we were also refinishing floors. Painter said paint first (I’m guessing so he didn’t have to worry about messing up floor). Floor guy said floors first (so his sanding didn’t mess up base boards. Also guessing here.)

But I defer to the pros.

Mess and "construction" comes before paint. All casings/changes first. Remove all doors for paint, and put them back on AFTER all else is finished. Meaning after walls and trim casings are painted, and doors have been painted, and then re install into their respective hinges already in place on your new finished/painted casings..

Thank you!! This helps a lot! @EPHROSS DESIGNS - I didn’t even consider the baseboards, thanks for the heads up!

You are very welcome and good luck on your project!