Can a investment property owner live in the home as primary residence legally

[Leena Stacey]

Hi, Im looking to buy a house in southern california and received approval for investment loan for investment property that is a single family unit home. I was curious about living in it as an owner though. Ive seen conflicting answers online and just want to know if Its legal for me to occupy the home down the life if life circumstances change and I need to while still renting out part of the house? Is it legal for me to do this or am I committing mortgage fraud?