Due to Thailand financial crisis in 1997, It causes Thailand real estate segment many problems. The financial crisis had been effected to both developers and individual buyers, who were debtors to the financial institution and incapable of paying back their debts. The results of unable to pay back their loans to the financial institution, those had to go through the Debt Restructuring process since the debts had become the Non Performance Loan (NPL). The debt restructure process is the method of transferring the collateral assets to pay back the debts. After this process, the assets can be bought from the department of lawsuit and also turned the asset into Non Performing Assets (NPA). The thesis objectives divide into two parts 1) to study the characteristics of NPA 2) to study and examine the problem of NPA. However, The results indicate that TAMC owns many lands with constructed property about 51.32% of their portfolio. While comparing with the number of vacant land in TAMC’s portfolio is equal to 48.68%. Moreover, the majority assets in TAMC’s portfolio are big assets. As for BAM, they own many vacant lands about 62.28% of their portfolio and they have land with constructed property in their portfolio for 37.72%. Also, the assets belongs to BAM are mostly small size assets. For TAMC, the problem which mostly obstructs them from selling their assets is the assets eviction. Second are the assets potential, the debtor or previous owner, assets price, and joint ownership of the assets. The way to solve the problem from property eviction is to negotiate with the previous owner to release their property, while selling the assets in parallel. However, if negotiation process is not successful, the only way to solve the problem of assets eviction is to go through the legal system. The rest of problems according above can be solve by set up a reasonable price of the asset , provide a debtors an opportunity to restructuring their debts, revise the price of the assets from time to time to fit with the market price, making a joint contract for selling under the same price and the conditions to the market. If these methods can’t solve the problem, then TAMC has to go divide the assets according to the ownership ratio. For BAM, problem which mostly obstructs them from selling their assets is from the debtors or the previous owner. Second are the assets eviction, joint ownership of the assets, the assets potential, and the assets price. The way to solve a problem from the debtor or previous owner of the asset is to sell the property to the debtor or negotiate with the property benefactor. The rest of problems can be solved accordingly by making a joint contract for selling under the same price and the conditions to the market, assets renovation to increase the selling price, and revise the price of the assets from time to time to fit with the market price. The study indicates both TAMC and BAM are solving the problems differently. As for TAMC, they sell the assets with its original condition and set up the asset price to match with the assets potential. As for BAM, they usually renovate the assets in order to make a value added to the asset price. Both organizations solve their assets problem differently because of the difference of their asset qualities and their organization policies.