What documents are required by Jomtien Immigration for a Non-O retirement extension and is a 1-year lease necessary?

The inquiry is about the specific documents required for a Non-O retirement extension at Jomtien Immigration, and whether a 1-year lease is necessary. Community responses suggest that a one-year bank statement is needed, and it's advisable to visit the Jomtien Immigration office for a complete list of requirements. There is also mention that while a lease may be secondary for the first year, it is an important consideration for subsequent renewals.