And get in writing from the tenant they understand and agree that once installed, the panels and wall become part of the rental property.

Would I be able to deduct business expenses and conduct write-offs (i.e. rehab costs) despite the fact I didn’t “purchase” the property, but rather I just contributed the funds?

"5% interest, 25 year amortization on my loans right now"I did not see anyone write it, maybe switch to 30yr amortization?

Write consistent content, target the right keywords, and your rankings will start to rise.

If the interest rate goes up after 5 years you can write another note.

For investment properties, it appears that my clients are all writing off ALL mortgage interest and ALL property taxes.Primary residence, they are writing off interest on the first $750k and zero on property taxes (they are already at the $10k SALT cap).Our President is a real estate mogul, lo and behold tax reform didn't hurt real estate investors at all.

My background is in software engineering and have worked for some amazing companies over the past 15 years or so of my career. 

Here's how you can do that...Acquire Furnished PropertiesWhen you are in the property search phase and you are using the various platforms and software to find your next deal.

The software we use calculates it for us when we input the bill. 

Since the park owner told your dad in person but did not send anything in writing yet, it might be best to wait and see what happens but know your options.