Bad landlords are bad businessmen. These older units are rented at below market rate and are occupied by lower income families. To fetch the highest ROIs each unit should be modernized with granite countertops, satin paints, brazilian hardwood, and stainless steel appliances. This will take a couple months of construction but at the end of the day the lower income families will be replaced by young progressive professionals which leads to higher property taxes and more funding for homeless services.