This paper investigates the impact of hot money on Taiwan's real estate market. The Markov-switching approach with two-stage estimation is applied in this paper. The estimation results indicate that inflows of hot money drove up housing return in the bust regime, while it did not significantly affect the housing return in the boom regime. The capital flow surges into Taiwan after the Asian financial crises, which is the bust regime in our estimation, could drive up the housing return. Thus the government in Taiwan should pay more attention on the capital inflow during the bust regimes in case that the bubble happens.