Tokyos property prices in the commercial sector have escalated in recent times which may lead to an asset price bubble according to a top executive at Japans second-biggest property developer

Yasuhiko Watanabe, executive vice-president of Mitsubishi Estate, a leading developer, told the FT: "I feel that todays upsurge in prices is a bit too abrupt, and it is so important that people nurture the sector gradually and steadily rather than pour gas over the fire."