Short answer: The paperwork foreigners typically need to sign a rental lease in Jomtien or elsewhere in Thailand.
Renting as a foreigner in Thailand is generally straightforward. Most landlords will ask for a copy of your passport, and if you have one, your Thai visa or entry stamp. Some landlords also ask for a security deposit and the first month's rent up front before you move in.
If you're renting from overseas before arriving in Thailand, we can usually handle the paperwork remotely -- sending you the lease to review, collecting scanned ID, and arranging the deposit transfer -- so the unit is ready and the lease signed before you land.
You don't need a Thai bank account or work permit to rent a condo. Those only become relevant if you're opening long-term utility accounts in your own name, which we can also help set up if needed.