Typically there is no assigned order anymore. EA has allowed the game's early quests to go out of order.
A few notes:
- You can only have a few active quests triggered by particular characters at a time
- By completing quests in your quest book, you will pick up new quests
All there is to it is empty the quest book. I'm sorry if you want certain buildings before others, but it seems like it's all a game of chance when certain quests unlock. As the poster above me said, logging into your town you should try to clear all tasks first, then any buildings. Make sure to click on any ! marks and read/tap through the dialogue. This begins new quests. After all the ! are gone, assign those characters to those quests. If you are setting other characters, I would set them all at similar timeframes. Or at the most, when you next expect to log into the game. So don't just set 24 hour jobs unless you honestly won't log in for 24 hours. The quests are based on free characters and those that need to trigger ! quests.
The orange house will come, just be patient and enjoy the game. Just build other quest buildings, complete other quests and the game will catch itself up.