Most rental periods are for one year, although some shorter terms are available. In most cases you will need to pay a 2-month deposit, and 1 month in advance when you sign the contract. Your deposit is returned to you 1 month after the termination of your lease. This allows the landlord to ensure that all the bills incurred for phone and utilities are cleared before releasing the security deposit. Under Thai law they are liable for any outstanding bills on their premises.