Take this advise from someone who has done evictions on Georgia for 15 years. Always have separate agreements for each tenant. Here's why: The four tenants most likely, are depending on others ( their parents) to cover the rent. Each parent expects to only pay for their own student's expenses. They are not related, and do not share information between parents. They just pay the rent until their lease is done. They will not agree to, nor did they ever agree to, cover any other portion of rent when they signed the lease ( i would never do that...would you?). They are not required by law. I've had two daughters lease rooms in houses in Athens in the past. I now have my son about to do the same in another college town next year. It helps when I do this for a living - I've seen most if not everything that can be tossed at me. Here's your likely scenerio:
You issue the Demand letter - which you did. You start the eviction AFTER the tenant had sufficient time to answer - usually a minimum of 48 hours later. Then, you fill out the eviction paperwork at the courthouse. The Sheriff will post the notice on the door for the tenant, as well as mail it to the house. This takes anywhere from 2-7 days, depending on how busy they are. They have 7 days to respond. They will respond after 6 days and 7 hours into the 7th day...at 4pm. Ask me how I know, after 25+ evictions that I've done. It's uncanny - but true. If you get lucky, and they do not respond, or respond late - you go to the courthouse on the 8th day, pick up your Writ Of Possession signed by the judge, and if the tenant did not leave you the keys, and vacate willingly, you MUST hand the Writ to the county Sheriff to be put on their waiting list for eviction. Each county is different. Some allow eviction companies to handle the situation. They cost a few hundred dollars, mostly to cover the manpower to evict. Some counties require two people PER bedroom - in this case, one bedroom = two adults- even if the room is empty...I know- sounds ridiculous, but true in a lot of counties- mine included. Once things are tossed out, and tenant removed, sheriff signs off on eviction, and it's all yours. Total time: 4-8 weeks. No rent, only expenses. Now...you have an empty room, with no income. You must fill the vacancy during a school year - not so easy.
Now...imagine if you signed all 4 to one lease. ALL four must be evicted. You will be sued by the three that had nothing to do with the 4th tenant not paying. This will take time- even if you prevail in court. It will take 1-2 months to hear the case in Magistrate court, then, if everything goes your way, you must evict those that did not give you the keys back and move out( giving you possession back). Now- you need multiple adults and the eviction company to do the eviction. Costs multiply, things get messy. Time is much longer due to the court case. Now...no rent for the whole house, for months, and an empty house during a school year...Good luck filling it quickly...
Things that sound like good ideas to protect yourself actually hurt you in the long run. My guesstimate for four evictions and no rent- would easily top $3-4-5K - maybe much more, if you must go to court against all four tenants and not receive rent for months + the costs of evicting everyone. Remember- chances are while waiting for the court case, you will not be paid by the remaining tenants fighting eviction. At best, they will pay in to the court as instructed in the Sheriff's notice of eviction. Keep everyone separate. You're investing in a college town - adapt to the way things are run in a college town - separate leases. Also expect that this will happen again - maybe in another property. Chances are- it will eventually. That's the reality of renting. Good luck with this. It shouldn't be too bad with only one room affected.