These are professionals with additional training and a stricter code of ethics.

@James Roux I think that zip code is headed for bigger and better things but I don't think it will be Single family.

It's a good term to research and familiarize yourself with.I charge a fee any time someone wants to alter a lease.

(I have used the HUD website to find the FMR for Baltimore county but was wondering if it could be broken down by neighborhood or at least by zip code.)

I know there are financing and building code aspects to consider, but I'm mostly interested in the total cost breakdown.

Realtor altered me to the home.

Its all based on the property, zoning codes and the numbers.Yes there is a demand for smaller properties especially new construction if in the right location. 

They replaced and brought two water heaters up to code.

Using the filter function you can start deleting undesirable properties based on the numbers to get the list down to a manageable size.If there is no value in the building column then you are likely looking at vacant land.There should be a code in one column that tells you if a property is a house, mobile home lot, multifamily, store etc.I spend a lot of time narrowing down my list, then I look up what they look like online to eliminate more, then I drive by every property that I might bid on.I do this myself, I don't trust a VA for this work as I am spending a bunch of money and one mistake on a property could cost many thousands of dollars.

These are two totally different tax codes.