When I am accepting applications, I  immediately place them in a folder and advise the applicants that I will contact them after the applications have been processed.

@Matt Schelberg, Better to do some sort of nasty chemical application BEFORE you have the finishing touches on the rehab.

I am just getting into real estate investing, and I'm wondering about rental applications and rental contracts - what is the best way to get the appropriate forms?  

Engineered is still wood and is better/required for certain applications.  

Screen your tenants thoroughly and make your decision based on what all you find out and charge a small application fee (about $35.00) to help reimburse your new tenant screening cost.  

Have the new guy fill out an application and process as usual.

According to applicable laws, would this situation be legal?  

I contacted city of seattle regarding the change of address into the alley way street name and here is their answer:“ You can submit a request to change the address with our Addressing Team in the Applicant Services Center (ASC location and business hours), but there may be a problem since this site has no frontage along **** Street

I had a great turnout at the open house, to weed out any non-qualifiers they first had to fill out an application via Google forms and once they passed the test I responded to them with the open house times.

Hey Guys,I recently received an application from a potential tenant and ran his credit/criminal history using mysmartmove.com.