what is the market value of 1 additional bathroom?

I think you need to provide us with the price of the unit. If it is a $900K unit vs. a $2M unit, I think the answer will be different. You also need to say how big/nice it will be to get a good answer. As an example though, when when we looked at 2 bedroom condos a year ago, the 2 bath units seemed to be at least $25K more assuming all else was relatively equal - maybe even more. Bottom line - 2 baths will be much more attractive to families and will mean more money and probably a faster sale (assuming you don't compromise the rest of the apt to do it.)

It's not about the resale value per se (though that is significant - I disagree that it's omly $25K). It's also about the resale time - most people buying a 2 bedrrom unit won't even bother looking at 2 beds that only have 1 bath. Those that do are in most cases looking at the very low end of the 2 bedroom spectrum, keeping the price artificially low and creating a MUCH longer 'time on market' situation for the seller.

I would strongly urge you against buying a 2 bed/1 bath unit:

.unless you plan to install a second bath and know that you can get approval to do so
.particularly if there is no powder room

If it has 1 bathroom, it's probably a junior four disguised as a 2br

One thing I learned the hard way - you can always wait to bathe or brush your teeth or even use the kitchen sink but sometimes when you need a toilet YOU NEED A TOILET RIGHT THIS MINUTE. Definitely that second bathroom is extremely valuable !!!!!

I agree with #4-anything with 1 bath was not a true 2BR to start with

Always go for the 2 bathroom. If you have kids, you'll want the extra room. Their bath toys take up the whole tub!