I have a security deposit to cover this but wanted to check to see if anyone knows an efficient and fair contractor to hire for a crank window repair services.

my husband and I have a hard time proving income on paper, and we will be filing an extension on our taxes for 2017...thought maybe it would be an option to pick up 1 or 2 more rental properties.

My interest in REI developed when I was in my early 20's and wanting to secure something that I could pass down to my child/ren.

Try reaching out to such organizations and ask for a sample file to check validity in records. 

Except lease contract, statement or evidence of security deposit, move-in check-in list, what other documents should we get from the seller? 

Business is less than 2 yrs old and no tax returns filed yet.Anyone have any ideas?

Most of those types Pension Funds, Insurance Companies are investing with REIT's.The institutional money typically only invest with the whales for what they tend to perceive as ultimate security and low risk.I talk to REIT's all the time looking for off market properties for my clients.

A local real estate developer/landlord has filed a civil action suit against what appears to be EVERYONE whoever operated an AirBnB that did not fall within the legal short-term rental zone ("short-term overlay" for those familiar with Charleston) whether you rented it 1 or 1,000 times.

Any (quick) replies would be very helpful...I am coming down to the wire on filing my taxes. 

It is harder to get loans, you must file a tax return, it costs something each year in most states, etc. it should be obvious when you need to start it.