Working with a private lender also enabled me to structure favorable terms that aligned with my investment timeline and cash flow goals.

For the modifications, cities generally focus on safety and code compliance, but since you're considering structural changes like wall removal and garage conversions, obtaining permits is key.

The easiest way to structure this is to purchase the property with a hard money lender that will cover both the purchase price and the rehab cost and refinance the loan with a conventional or DSCR loan 

How would you suggest structuring a seller financed deal?

The purpose was for us to fix up the property and to flip it.Ownership Structure: My aunt and I are joint tenants, each holding a 50/50 ownership stake in the property.

Since this is our first property, is it advisable to use a single LLC for both personal asset protection and holding the property, or are there reasons to consider a more complex structure?"

Any tips on structuring this with a secondary loan or financing approach?

We need guidance on how to structure our partnerships.

Is it the overall tax structure or the growth potential? 

Quote from @Sean Regan:  I put this as a structural challenge in a scope of work.