What documents are needed for a marriage-based extension of stay while renting property in Thailand?

To obtain an extension of stay in Thailand based on marriage while renting a property, you typically need the following documents: a valid passport with a current visa, a copy of your marriage certificate (translated into Thai if necessary), proof of residence such as a rental contract, and financial evidence (like bank statements) demonstrating sufficient funds. It's advisable to check with local immigration for any additional requirements.