NJ square footage? Help! Please?

[D Higgs]

Could anyone assist with some ideas, strategies, and/or guidance around determining a property's square footage in New Jersey? Not sure if other markets are the same or not, but i am finding it VERY challenging to see a property's square footage here (specifically Northern NJ). But why??! Is it a law or something why other markets publish this info on their listings but NJ does not? Thx in advance.

I've checked:

- tax records

- MLS

- public sites such as zillow, realtor.com, etc

Reason sq ft is needed:

- rehab and construction cost analysis

- comps

- determining ARV