The reality of the program is more nuanced, according to a new Abell Foundation report. Researcher Joan Jacobson spent months poring over the details and found that the city's numbers don't all survive close scrutiny — some homes counted as rehabs, for example, had building permits before the program started and others still don't have them. In the big picture, Vacants to Value has not reduced the number of abandoned, blighted homes. As of the end of last year, Baltimore reported 16,636 vacant building notices, about 500 more than when the program started. That said, Ms. Jacobson's research did validate its effects in neighborhoods like Oliver, which has in fact seen a substantial decline in vacant houses and some notable cases of concentrated rehabilitation.