I searched the internet and also find no such limit.

Obviously you have to do your due diligence too as this is the internet! 

I did some light internet searching, and the MD real estate law website is saying it should be 3% up until 2015 then switch to 1.5%. 

You are not presenting  this buyer with an opportunity that would not otherwise exist, it's plastered all over the internet, albeit overpriced. 

Crime Prevention Through Environmental Design... look up the principles on the internet and employ them.  

Getting a real estate license to be an investor is like becoming a casino dealer in hopes of becoming a better gambler.

@Jason Coleman please don’t rely on the “advice” given on the Internet by strangers.

BP is maybe the greatest free resource to help you get started in Real Estate Investment there is on the internet.

I am an IT guy and fairly skilled when it comes to creating a solution through the internet and I was thinking to create a website where possible tenants can fill out an application online that way I can choose the best tenant but I don't know what questions I am legally inclined to ask when it comes to that application. can I ask where they work or how much they make which from my point of view it is critical? 

One tenant continued to make her deposit directly at my bank simply because she did not have internet at the time.