There are instances that you can get out of it if particular life events occur (take marriage as an example) but you absolutely have to live there otherwise. 

@Joe WhiteBy Philadelphia zoning you can have a group of people living together and using housekeeping facilities in common, “but not to include more than three persons unrelated by blood, marriage or adoption"So by the city ordinance you should not rent to more that 3 unrelated people aka 3 rooms. 

Yes, the court can decide if the parties cannot come to an agreement.The lease is marital property like anything else acquired during the marriage.

If it were one per household, this would in effect be a marriage penalty.  

There are statutory exemptions for transfers that will NOT trigger the due on sale clause (E.G. death, marriage/divorce, estate planning/asset protection, and a few others). 

Nothing is a guarantee but people that are bound by blood or marriage are far more stable than a group of friends, co-workers, or people that hooked up on Craigslist.When I rent to three or more unrelated people, I require that each of them make at least 2x the rent income individually.

ABOUT ME: In an effort to not get tooo deep, I have been a stay-at-home mom for 18 years and trying to leave my abusive marriage. 

You and your wife NEED to be on the same page, if you are not either your REI career, your marriage, or both will come crashing down.

He would have 2-4 homesI would have 2-4 homesThen come together to buy our home at time of marriage etc…Thoughts?

Not only did this teach us new things about ourselves, but it also stretched our marriage in the time that we were actually at home.