The Command house was renovated extensively for OTC but it was shelved. In fact OTC originally accepted and helped in the renovations with his wife. The official residence of the President is the Istana. Only 3 presidents made their permanent residence, Ishak, Nair and OTC. The rest preferred to return to their own homes - Nathan - Joo Chiat, Wee - Siglap, Sheares - Nathan Rd.
That is not accurate either. OTC lived in Command House from day one of his Presidency. Only Encik Yusof ever lived in the Istana.
Yusok Ishak and his wife was so bored that he obtained permission for cabinet Othman Wok and his wife to take up a nearby bunglaow.