When you are planning to add additional levels to an existing home it is important to follow the right steps in order to prevent yourself from wasting money on a project that might be too costly for you to complete. Turning unknowns into knowns is an important step in making sure that there are as few items that pop up during your home addition project as possible. BVM Contracting has compiled a list of three very important items that you can complete for around $3000 that can give you absolute certainty that your existing home is well-suited for a second or third storey addition in Toronto.