Each condominium will have different operational fees in order to maintain the condominium. The amount of common expenses is based on the yearly budget. Budgets usually include such items as the cost of repairs, insurance fees, reserve fund deposits, legal and accounting expenses, property management fees, snowplowing, landscaping, elevator service and maintenance, and garbage removal. Each unit owner is responsible for a portion of the Condominium Corporation’s total operating costs. The declaration will indicate proportions expressed in percentages to each unit. It will also contain a statement specifying the types of common expenses that the condominium corporation will charge. The proportion is not always indicated just by area. Since the common expenses are calculated on the basis of the budget, they can fluctuate from year to year. However, in order to change the percentage that each unit pays, written consent of 90% of the unit owners would be required with notice to mortgagees.