MLS data missing for house. Is this normal?

[Marcellus P McKinley]

Morning y'all!  

So I've been starting to analyze a few properties to buy my first small multifamily, and I noticed something odd about one in particular. It's a 4-unit located in SE Virginia with an asking price of $125K. It's been on the market for quite a while, so I think I can negotiate a lot lower. Based on median rent in the area, I think I could make pretty decent cash flow, depending on repairs and such. The problem is... there's a LOT of missing information. No square footage, no lot size, and odd tax data. Annual taxes are extremely low for the area (anywhere really!), and I have a few questions: 

• Is it normal to be missing a lot of things in the MLS entry for a house?
• Should I be making any inferences about that (i.e., this is a good buy, bad buy, etc.) ?
• How should I approach this in the future?

Thanks in advance for the help! This community truly has been great so far.