Again a rehab of almost any property in Baltimore, given almost everything there is older than 1994 is gonna run you probably 120k & that’s before buying & selling costs, holding costs etc, there just aren’t margins to support that at least that I’ve seen. 

Maybe AI can take over this industry to save everyone time and $ for buying and selling a house which isn’t that complicated of a process.

I had an idea of placing a sign at the door with it saying something along the lines of "If you're interested in selling your home or would like to unload rental properties you may have, talk to me first".

-Fee based means they can sell commissioned products (insurance mostly) -Fee Only means no commissioned sales usually a %AUM, AUM & Fees or Fees Only.  

I am buying land, going to build the house from scratch and sell it.

also determine what niche.. keep in mind 85% of agents all do the same thing basically  sell sfr s   there are many niche's in RE..

I then rehab the property and finance it or sell it.

As well as if it is smart to even have this as a back up plan In most places tax liens go right to the front of the line so there's no real risk to the state/local government and thus no reason to sell them for pennies on the dollar, as they usually can collect everything just by foreclosing.

@Kim LeJeuneIf you lived there and sell shortly after (within 3 years), you may not owe capital gain tax.When you ask about the form, it sounds like you intend to wrestle with forms.

If you already own it and it was a personal residence that you don't want to sell providing you live somewhere in the area, have an interest and understanding of your local rental laws and aren't in California (the laws) or Florida (the possibility of assessments) then self management is a possibility.