Remember; just because a building is under scaffolding and a green tarp dose not always mean it's a leaky condo. Sometimes the building is simply undergoing major remedial work. All building components have a life expectancy and when that time expires they need to be replaced. Many times these condominium complexes that are undergoing this type of work can become an excellent buying opportunities due to the fact that once the work is all done and paid for they are still selling for the same price as the 40 year old building down the street that has not had the work done yet.