U simply need to get your title insurance policy hard copy should have been mailed to you a few weeks post closing.. open it up and read it.. there will be clear instructions on who and how to file a claim..

For starters if you and she file a joint tax return then you are each the same taxpayer no matter who's name is on deed. 

My original plan was to simply rent, but my dad has proposed the idea of a joint venture.

Ill send u a dm.

As in a Joint Venture type of investment?

Let me keep this straightforward:1031 exchanges are not applicable to primary residences or other non-investment/business propertiesIf you sell a primary residence that you have lived in for at least two years, then you can sell and claim your Section 121 "homestead" exemption and it will exempt you from up to $250K in capital gains (or $500K if married and filing jointly). 

Joint tenants (not married) have lived in their California house as their primary residence for last 10 years, except for 3 years when they rented it (2014-2016).

You could start a joint LLC to utilize for financing, split all contributions and profits 50/50.

@Jason Duhn I’m looking to ask some questions about a joint venture and setting up an operating agreement.

My girlfriend and I want to dip our toes into investing and was looking out of state.I was wondering if we would be able to get an FHA loan as a joint tenancy while unmarried.