Olympic Games host city bidding rules?

Question

When can Beijing bids again as an Olympic hosting city?

Does a previous hosting city need to wait a certain amount of time before it can bid again?

Answer 1

I think a city can reapply but it's up to the IOC to decide which city wins the bid.

CHOICE OF THE HOST CITY -

The IOC’s role is to elect the Host City and establish the candidature and election process. The choice of the Host City is the prerogative of the IOC Session (the general assembly of the IOC members) and it is the IOC Executive Board which determines the procedure to be followed until the election by the Session. Unless there are exceptional circumstances, this election is held seven years before the Olympic Games.

The Host City election takes place in a country which does not have a Candidate City for the Games in question.