their business is booming. at a level not seen during the previous changing of the guards between administrations. due to the striking amount of deep-pocketed future white house officials flooding washington. trump's cabinet picks forming a long line of multimillionaires and billionaires. all ready to fork offer big bucks and putting a priority on opulence. >> first people who have arrived have expressed strong preference for luxury properties and turnkey condition. and in excellent locations, close in. >> reporter: among those posh neighborhoods that fit the bill, the northwest neighborhood where the obamas will be renting their post-white house home. the storied watergate hotel home of some of the luminaries of administrations past. and the massachusetts heights neighborhood which boasts the most expensive home for sale right now in d.c. a lavish $20 million estate. sunlen serfaty, cnn, washington.