There really isn't any external limit or law for the number of properties that banks can lend on for an individual but regulators keep pressure on them to minimize their risks so the banks end up setting internal limits.  

Tulip bulbs (international trade!)

To speed things up you might want to consider outsourcing some of the tasks that can be delegated to others while you focus on what you're good at/where you're needed.I'm sure you've heard of the pareto rule: 80% of your success came from 20% of your actions - identify those actions, do more of them, and outsource the rest.Things like prepping paperwork, sending out mailers, setting up home inspections...etc can be outsourced to a virtual assistant, an intern or someone you mentor - you can focus on lining up financing, talking to sellers...etcThe 4 hour work week by Tim Ferriss is a great read on this topic.

If an offer comes in at a certain percentage below their asking price, they are not allowed to accept it.I can't tell you how many times I've watched a bank-owned property linger on the MLS, twisting in the wind at a completely unrealistic price, while the bank rejects lower offers--only to have the property eventually sell at that lower price point several months later, when the bank has fulfilled its internal obligations to seek the highest price. 

@Ahmed Hamed, we manage several portfolio's for international investors.

Back in the day, when there was an actual reason to do internal lender Reviews of Appraisals, the fee was usually added in when they were actually done, and disclosed to the borrower. 

They key is to get the awesomeness agents think they are internally to match with the reality how  people actually see you.When those 2 things match up is when the magic happens.   

I believe San Francisco is one of the cheapest international cities in the world. * Uber, Airbnb, Pinterest, Dropbox will all go public in the next 3-5 years, creating a tidal wave of billions of liquidity into the ecosystem looking to buy real estate.I'd love to get everybody's thoughts!

If someone is looking for an intern or want to pay it forward by bestowing to another eager investor the knowledge they were given, please feel free to reach out to me.

.:) Like all my posts this one is not for the faint of heart, as it has once again turned out to be a whopper of a tome...