An abandoned apartment, condo or rowhouse, now occupied by squatters.

(n) An abandoned or condemned structure that still has working electricity, water, plumbing, air conditioning, heat, shower, or any combination of these facilities. Very much sought after by the homeless or drug-addicted, particularly in winter months, the abandominium is the very epitome of the perfect squat.

an abandoned, still standing house or apartment where the homeless or people with illegal occupations or habits take shelter