So, Just 2 basic questions for anyone that is familiar with the Baltimore city Property Tax assessment appeals.  

Right now, a decently desirable one-bedroom condo downtown is $2,095++ per month on an assessed property value of 800k and a $4,500 rent for a 2bd 1.8M property.

I met someone recently (older gent) that owns over 100 lots at 7,000 Sq. ft / 0.160698 acres in Montgomery County Texas, and when looking I seen that all of the lots he has are showing the C1-All Vac Res Lts&Vac Res Tr<5 Ac as the "State Code" and the Total Assessed/Taxable Value is $250 ?!!

I’m trying to get an older fire damaged property under contract, but honestly I’m not sure how to assess it.

And since I have a lot of units in one building and don't want to worry about the HOA mismanaging it and HOAs going up, assessments, etc.

Matthew,Assessment meeting in October increases take effect in Feburary, generally.

It's mostly folks in rural areas who haven't kept up their properties but believe they're worth the tax assessment

The late bills and mismangement should be paid via a special assessment, so it actually comes off after a set time. 

@Bee Vang Property tax on a multifamily building is assessed for the overall property and not per unit.

Living on-site in an ADU and renting out the upstairs is completely legal and will not jeopardize either your Class 1 Residential assessment, your homestead exemption, or any senior property tax relief you may be qualified for.There are some local architects who have ADU experience; you might find some recommendations at the DC-based CSG's ADU forum.