How to determine if remodel costs will hold for future sale of home?

[Jenny Milu]

We are considering doing a full master bath remodel. Our current master bath is okay, it's small, and the shower is tiny, we were quoted about $40k to expand the bathroom a bit as well as do a full upgrade. Is there anyway to know that this investment into the home will continue to hold its value when it comes time to sell the property in the future?