For tax purposes its a passthrough entity, but it makes it a lot cleaner to do tax strategies around maximizing expenses to lower taxable income. 

If he has properties, look them up on the tax records and see.

For the purposes of calculating the limited interest deduction, the total mortgage debt owed would include both the individual mortgage on Unit A and the owner's share of the underlying mortgage.So, the total mortgage debt owed would be $800,000 (individual mortgage) + $200,000 (owner's share of underlying mortgage) = $1,000,000.Therefore, the owner would be limited to deducting mortgage interest based on this total mortgage debt of $1,000,000, not just the individual mortgage.Thus, the deduction for mortgage interest would be calculated as:($750,000 / $1,000,000) * $40,000 = $30,000Therefore, in this scenario, the owner would be able to deduct $30,000 of mortgage interest for federal income tax purposes.

He has suggested that to defer taxes I first transfer $150k from my current Roth IRA account into a new Self-Directed Roth IRA custodial account that I will open. 

btw - if you have someone who wants to push out the move-in date, get a hold deposit - different than the security deposit - so that if they do back out, you can claim the hold money.

They do penalize you for claiming the roof now. and either increase the rate or kick you out. of the program. - Speaking from experience after several successful roof claims...

When you price out the Principle interest taxes insurance and any HOA the rents in most states won't cover the payment unless you have BIG down payment or equity. 

Insurance companies will try their best not to fulfill claims by looking for loopholes. 

We have 3 airbnb’s in the Tampa/St Pete area and property taxes with insurance is reducing our returns.

You'll just be sitting on a ton of equity with no tax benefits.