Best way to deduct early business expenses?

[Leah Fisch]

Working with @Mark Updegraff and getting ready to (hopefully) purchase my first investment property.

My plan is to purchase and THEN put the property into an LLC.

What is the best way to track and later deduct business expenses given that the LLC for the property doesn't exist yet?

For example: Purchase, repairs, travel to/from property...

My reason for doing it this way is to get a conventional refinance loan AFTER all the work is complete