Adjusted cost base (ACB) usually means the cost of a property plus any expenses to acquire it. such as commissions and legal fees.
The cost of a capital property is its actual or deemed cost, depending on the type of property and how you acquired it. It also includes capital expenditures, such as the cost of additions and improvements to the property. However, you cannot add current expenses, such as maintenance and repair costs, to the cost base of a property.