If this was your rental property, you claim your repair expense on Schedule E.

This applies regardless of when you do it (day 1 or 25 years later)Your LLC can be the manager of the property and collect rents and pay bills - and it will go on your Schedule E regardless of if you collect rent in your name or the LLC 

E an either or situation. 

I'm wondering how to classify my mixed-use property on schedule E.

@James E.

In some popular areas the prices have gotten higher then last bubbles but so many areas haven't touched those highs.

Am I correct in assuming that you cannot charge a tenant for use of solar-powered electricity if there is no actual bill from the utilities company (PG&E)?

If you done accounting for your rentals, I'm sure you done schedule E's, so you pay the LLC, what you owe the and book it as an expense for the year. 

If this is a rental (schedule E) of a business (schSch c) or any other entity, Scorp, Corp, or Partnership. interest expenses for property purchased for a business involved in real estate activities is deductible as a business expense providing that no other criteria thst may otherwise disallow is present, such as personal use of the property or hobby loss is present

I'm looking at these two industries as a possible new career path & doing as much research as possible (I've worked in R/E before prior to 2008, so it wasn't a fun time), but I'm looking at what the future holds & where there could be some serious challenges.