Just depends how passively you want to invest. 

Anyone have any contacts with dependable contractors in the Baltimore, Baltimore County area?

If it's a quite steep slope, you should budget $400-500/sqft, depending on finishes. 

Depends on what you want to do.

For each day you advertise but are not registered with the city you pay something like $200 per day.The reading I've done around removing RSO tenants is that it can be done under a few limited circumstances and there is a corresponding fee to be paid that depends on age, family size??

Rent here for a 3 bd SFH averages between 700-900 depending on how nice the place is, location and size.

It's all depends if you purchase under individual name or company since those entity subject to tax in different ways.  

It all depends on the people you meet and how you can align what they want with what you want.

Ours is about 150-180 depending temp.

Also, even if the previous owner only owed 60k, you have to take into consideration the cost of foreclosing and the lost income if they hadn't been paying for months or years, not to mention any other costs of satisfying tax liens or maintenance issues that need to be resolved before sale.So, speaking as someone who has bought only 3 foreclosed properties:  You make an offer that works for you, and depending on how anxious they are to sell it, and how much interest they've had, they will accept or reject.