Assuming
you are the buyer, the answer is yes and no. Eviction can cost
you a bit for an attorney, but you could also use the presumably "bad" tenant
in possession as a bargaining issue to get a better price, one
which might more than offset the trouble and expense of bidding
Mr. Malatenant a fond adieu.
It might pay to do some homework though. Is
Mr. Malatenant a "professional tenant" (one who makes
a habit of sponging all landlords and then moving on to the next)?
Does he have a criminal record? What do the neighbors say about
him? Police get called a lot? These are important because you'd
want to know if he's the type to trash the place on the day he
gets booted. Or he might be a decent person who just lost his
job.
