Installing LVT and tub surround over existing tile

[Gayle Melnick]

Hi everyone,

I want to renovate a bathroom in one of my rental properties. The tile is in decent shape, the grout looks like it could be redone but mostly it's just extremely outdated. There is tile on the floor, a tub, and then tile installed on the walls surrounding the tub.

I want to install luxury vinyl tile and a basic tub surround. I've found materials that according to the manufacturer can be installed directly on tile. 

I've gotten an estimate for installing the LVT and tub surround directly on the tile and another estimate for demoing the tile, then installing. Obviously the second option is more expensive.

Is there a reason why I shouldn't go with the cheaper option and install directly on the existing tile? I don't want to spend money on this remodel only to have an issue in a few months because I didn't know installing it over the tile would cause problems. 

Thanks for your help!