Along the way, I've started to pick up some of the lingo and structure of what goes into financing a deal. 

Similar to that of any other investment partner, structure a deal in that part of the proceeds from your arbitrage business goes to your landlord, the legitimate supplier if you will.

@Jeremy KerrProps for stepping out of your comfort zone.To be honest, your worth in this particular deal is whatever the experienced large scale investor thinks it is (assuming you have no finder’s fee written contract in place.)Ballpark estimate in my opinion is that finding the deal might be worth 5% to 10% of the deal pending structure of the deal.If the large scale investor is a person of character and integrity, he should provide some form of compensation given your relationship with this person.My suggestion would be to not focus on the compensation per se but try to learn as much as you can from this person during the evaluation of the deal.

Large structural things like a roof are 27.5 year- and only 50% will qualify if you occupy 1/2 the property.

Disclaimer: I'm not necessarily encouraging these routes, just saying they are options presented by the contract...Waiving the appraisal, waiving or shortening the inspection/"option" period, waiving financing contingencies, offering a seller's leaseback, buyer paying for title, offering a stronger earnest money, asking for fewer or even no repairs, and many more.Again, each state is particular, and some markets have trending "offer structures", so make sure to connect with an agent/lender in your local market to get a better read on the state of things and what you are capable of.  

-All property management companies are pretty similar in fee structure, but if someone isn't calling you back when they are trying to get your business, I doubt it will be better when they have your business.

Loan is commercial, they want you to close in LLC or other corporate structure. 20% down does not have to be  your money.

All of my income is real estate related. I make real estate commissions, I have a couple rental properties, and am about to embark on my next endeavor, a flip. I'm also looking to purchase a duplex or possibly 4plex.R...

I'll start with an overview of a deal I've been structuring over the past few weeks.

I'm no ADA pro, but I feel like I remember reading in multiple books that landlords HAVE to comply with requests like this (as long as they don't significantly alter the property/structure) but all modifications are at the expense of the tenant.