How to extend Vietnam visa in Da Nang : Vietnam Visa extension means that a foreigner who already has a Vietnam Visa currently residing in Vietnam who wish to continue to stay in Vietnam to travel, visit relatives or work, when the visa expires, they must proceed visa extension. The visa extension is usually from 01 month and up to 03 months and can be extended many times. How to extend Vietnam visa in Da Nang Vietnam Visa Extension Cost The fee for Vietnam visa extension service will vary, depending on the conditions of the visa application, it depends on your nationality, the entry port and the visa extension period you choose. Due to recent changes in immigration law, the visa extension process is also affected, so the cost is also higher than before. Documents Needed for Vietnam Visa Extension + Original passport of the guest. + N5 form (visa extension form for foreigners in Vietnam) signed by the guest and the guarantor, or the guarantee company. + Confirmation of stay by local po