What I would be looking for is a house that's one step away from not qualifying for bank lending, needs updates. 

I am updating the unit I currently live In and will do so to the other unit once I move the tenants out after the first of the year do to the CDC orders.

There are investor/agents here in BP, you can talk to them. 2- Baltimore City housing inventory is old, so most likely you will need updates , so you will have to do some kind of an upgrade, so you need that local person. 3- Your budget dictates where you invest in Baltimore,  lower the budget higher the profit but also higher the risk.4- Reach out to people, ask questions from Baltimore, most of us really helpful.Good Luck.

They are in need of a bunch of updates.

I am thinking about adding a master suite, a garage, and updating the current interior, and have a target sale price of $330,000.

It’s possible they could have updated the water line but you would see that in past permits on the building departments website.

-Updating the flooring & painting entire home made the home more modern and able to get higher rent amount-Using outbuilding for our storage saves us from having to rent storage unit.

Though the house was built in 1940, it had great bones and mostly needed design updates to bring it back to life.

Update: After the initial post I was able to do so more research online and through the forums (where there were endless posts on the subject). 

I am thinking about adding a master suite, a garage, and updating the current interior, and have a target sale price of $330,000.