In 1979, a doctor who lived and worked in Sydney purchased a 20 acre parcel of rural land on the outskirts of the city for $100,000. Over the years, he used the property as a hobby farm for growing fruit trees and as a weekend retreat for relaxation. Recently, the surrounding area has become more developed and the property has increased in value substantially. The doctor has also recently run into financial difficulties as a result of a malpractice suit and he is considering selling the property. Advise him as to whether he would be required to include any amount in his assessable income as a result of the sale.