Thereafter, the landlord must repair damage to screens once annually, when necessary, until termination of the rental agreement.

What they have done with the LLC is pushed the custodian into a background role - simply documenting the IRA's single investment of the LLC, doing annual reporting and acting as gatekeeper for contributions, distributions and plan-to-plan transfers. 

That would be an average 10% annual cash on cash not counting NOI from rent.

Qualify today and enjoy: Introductory rate of 1.90% APR for the first 6 monthsVariable rates as low as 4.00% APR after the introductory periodBorrow up to 95% of your home’s valueInterest-only payments during the draw period (minimum of $10,000)Credit Lines $10,000 - $350,000*Upon expiration of the introductory rate, all balances will accrue interest at the variable APR (Annual Percentage Rate) in effect for your account.

What matters is that the amount contributed is based on the correct figure of W-2 wages and that they are made by the business tax return due date plus any timely filed business tax return extension.If the entity type is an LLC taxed as an S-Corporation (calendar year), the annual solo 401k contribution deadline is March 15, or September 15 if tax return extension is filed.

Account Closed : We are renting out the top 3 bedroom flat of the duplex on an annual lease and living in the main floor flat. 

All profits will be dumped into Equity annually until Loan is repaid. 

Annual Property tax about $1,200. 

"profit")  will have to pay you back for all of those monthly/annual losses...and then some...then you get taxed on what's left...and unless you 1031 there's depreciation recapture...

These costs tend to reduce your annual cash flow, so I would venture to say that your first years of ownership will most likely produce your best cashflows.