Owning two parking spots have a few advantages. Selling one like GraceCondos says is always a great option, or using one to rent out to someone else is another option, or depending on the area that you live in, many people own two cars so having two spots is a great selling feature, especially if you are living in the northern part of the GTA. Will it add extra value to your suite, it may, but only to someone who really needs two parking spots.