Good question. It depends on the building you are buying into. Many mature buildings in fact at some point have a special assessment for some type of project. As long as the building has had good management /record keeping over the years, you should feel confident about your purchase. Review the minutes, budgets and and condominium declarations while you are in your attorney review period. Also, see if their has been a steady increase in assessments over the years vs. significant increases over few years. Ask what major projects have been completed. If deferrred projects such as the replacement of chillers, boilers, lobbys, roof, window, and masonry have been taken care of in the past, you should be in good shape. Really high assessments will have somewhat of a negative impact on resale, so take that into consideration.