Having said that, I did look at the last 3 months of closed sales (4 of them for detached, fee simple homes) in zip code 21230. I did not include one of them, because the home was boarded-up. The three others appeared to be livable condition. Here are the stats:
Average Original List Price: $164,933
Last List Price Prior to Sale: $156,967
Average Closed Sales Price: $151,667
Next, I looked at each of the tax records and derived the average square footage of the three as 1487 sqft. Based upon the average of actual closed prices, the cost per sqft is approximately $102.
Please note that this price does not reflect any property which includes ground rent. In other words, the figure only reflects an average of the three most recently sold detached homes owned in fee-simple.