Also, are summary judgements of possession legal in Georgia and/or Douglas County?

Since I'm assuming that's the case, I'm planning on waiting until the end of the month and giving him notice before December 1st in the hopes I can work with him to collect rent for November, because based on the way things are going, I'm highly doubtful I'm going to see rent checks for December and January.So, my main question is, if it gets to January 31, and he's still in possession of the unit, do I have to file for eviction or can I go straight to the police to enforce this?

In some states you’re allowed to take possession of any house with 30-days of notice, regardless of whether the person is a renter or occupant.

what strengths do you possess?

I've found @Elizabeth Wilson 's approach works a high percentage of the time.Create a document (2 copies), Surrender of Occupancy, note date, time, amount given and the statement:I am surrendering possession of the unit at ________________ on this date and have surrendered the keys for the amount noted above.both parties sign and exchange one copy

Demand possession, take him/her to dispossessory court aka Magistrate Court in 7 days.

Some creative financing ideas:Ask the seller to loan you 100% of the purchase Do an installment down payment agreementGive the seller a note - pay him a percentage of the rent you will be collectingGive the seller a post dated check - post dated for 2 years for the down paymentOffer a blanket mortgage on another property you ownAsk seller to repair something (we call it the"Front Porch clause) instead of him doing it, he gives a check in that amount that it will take to do the repair - you endorse the check and give it back to him as the down-payment.Borrow SOFT MONEY on another property you own or from a relativeBe a limited partner on the deal - they refi or borrow money on their property - you make the payments over time with a nice interest and don't forget a buy out clauseAsk your girl friend, your Mother or drinking buddies - offer a free apartment for a limited amount of timeAsk the owner to finance 100% of the deal - keep him in as a limited partner Offer 20% more for the building if the seller will take back a principal only mortgage (that is without interest) offer a balloon payment and split notes.Ask the seller to let you manage the building for a year - collect the rents and make improvements from the rents receivedOwner financing with split notes (details on this to come)Proposal marriage to the owners daughter - make friends with the seller's wife - let him know you really want this property - beg for help - tell him you are a nice person - just getting started Offer a Hybrid offer - offer less - improve the building and give seller 20% of the profitsTry a Delayed Settlement with right of possession and subject to the mortgage - you make payments until settlement 1-2 years later.

I should be able to have the place cleaned up by this weekend.While I was at the courthouse filing for an emergency possession hearing because they weren't letting me in to fix a leaky sink they said was leaking on an electrical box (I checked--it isn't), they dropped their keys in my mailbox.

One case which might make sense of all of this was if a second mortgage foreclosed and took possession of the property. 

Buyer is responsible for obtaining possession of property upon closing.