Atlanta is a booming movie hub. 

After numerous phone calls i was provided the roll at an expense.

@Justin Seng I agree with numerous people before me, being that it is a complete preference. 

proper notice to enter is usually defined by the state as 24 hours notice. some states require 48. that is your starting point. that being said, coming through with a high amount of showings can be considered as disrupting the tenants right to peaceful enjoyment of their home. if you plan on coming through with one or two, you should be ok (legally) to give tenant prior written notice and come in regardless of their objections. if you think it may take multiple showings, you are likely better off to work with the tenant to set up a block of time for an open house. in extreme situations, you can consider offering a gift card to a local restaurant or movie theater to get them out. the tricky part is striking a balance between what is legal, entering with proper notice, and what is fair and reasonable, since the tenant can purposely leave the house an extreme mess to make it harder to re-rent, badmouth you to potential renters, and may even try to refuse entry. how you approach will depend on your relationship with tenant.

I have done this numerous times with single-family properties, but is it common in larger multi-family properties?

I liken it to hurricane Katrina and New Orleans, a lot of people tried to leave but cars that ran out of gas and numerous auto accidents blocked the freeways.

We all have seen the movie "BAD NEIGHBOURS". what i mean to say is, It is very important to have a clean and nice neighborhood, Its just not going to be a property but it is an investment done from hard earned money so better have a safe and wise decision, In future even you sell it you should get the right price for it and just because f few properties whole streets value goes down. so think twice to make a decision!!

I'd also get multiple bids and numerous interviews to see who is knowledgeable in that particular situation.

And a direct thank you to @Kim Tucker, @Chris Dawson, @Dan Krupa for their educational posts in numerous KC threads.

If you watch Glenn Garry Glen ross the movie you will see how they handed the leads out..