How Do I Slide Down A fire Pole When None Of my Neighbors Have O

The really sad answer is you don't -- until you either find a neighbor who has already spent the million plus credits to add a second floor to their house and then add a fire pole, or you get one of your Neighbors to do it.

An alternative is to go on the chat board for the game and look for a player who has posted that they have a Courtesy House in their game that has the item you need, then add them as a neighbor so you can access it.