Figure 2 shows trends in the ratio of home prices to rents in Taipei City. In 2006-2007 the ratio broke 600 months (meaning that the price of a residence is higher than the rent that one would collect on it for 600 months or 50 years). With such a high ratio, being a landlord becomes an unprofitable endeavor.
圖二顯示北市「房價租金比」的歷史趨勢，可明顯看出 2006 ∼ 2007 年起，「房價租金比」大幅攀升超過 600（亦即房價高於 600 個月、即 50 年的租金），若只靠出租營利完全不划算。