If the subfloor is unlevel you can fix low spots with a self leveling product and sand or grind down high spots.
Install vinyl plank around or under toilet.
The hole for the toilet drain and notches for for valves and piping were cut with a saber saw.
My question is about the mounting flange that was on the floor specifically regarding the height relative to the toilet.
Installing under a toilet after you remove the toilet which is often a two person job you need to measure the position of the flange and cut a hole for it in the flooring using a jigsaw.
I removed the carpeting and installed some vinyl plank flooring lifeproof from home depot.
Whether you re laying ceramic vinyl wood or something else on your bathroom floor you ll deal with the toilet in the same way.
The toilet has to be removed and the flooring cut to go around the floor drain.
This will leave you with an uncovered area around the base of the toilet.
Underlayment installed with toilet drain cutout.
Install full vinyl tiles on the bathroom floor stopping when the full tiles will not fit next to the toilet flange.
Install the vinyl plank flooring.
The previous owner had the bathroom carpeted which went around the toilet but not under it.