I also have (currently) 2 units and I am growing. 

I'm currently reading David Greene's book on BRRRR and was curious about how you all go about planning or visualizing added rooms to potential purchases. 

You would also want to ask what is your current rate, what rate can you get, what are the closing costs that are involved including points, ect.

part of a current medical campus? 

Hey, I'm a house hacker myself. 1 SFH, now rented out completely, and currently in a duplex that I just refinanced. 

Candy - Is your current rental in your name or the name of an LLC?

I'm currently in the market to purchase my first home (currently in an apartment).

This strategy can allow you to scale into a bigger or better-quality property while maximizing your equity.When to Start Looking for PropertiesStarting your search before listing your current property is a smart move.

Quote from @Jessica Cook: okay , thank you for your advice .I currently have the property under contract so as of right now  I should try my best to make it as good of a time as ever . 

Quote from @Justin Williams: Currently in Baltimore City, per Section 9-701 of the Zoning Code, a conversion from single-family to multi-family (two or more units) in a residential zoning district is only permitted in the R-7 through R-10 zoning districts.