A unit owner is legally bound to pay the monthly common expenses. If a unit owner does not make his or her monthly payments, the Corporation can register a lien against the unit for the amount owing, together with interest and legal costs incurred. Notification is also provided to the unit owner’s mortgage lender, which may pay the arrears on the unit owner’s behalf. If the unit owner or mortgage lender fails to pay the arrears, the Condominium Corporation can sell the unit to collect the amount owing, in the same manner as a Mortgagee may exercise its power of sale right on a defaulting borrower, where the loan is secured by a registered mortgage on title. The Condominium Corporation may lien a unit within three months from the date of the non-payment of common expenses.