Thai immigration in Nan is for foreigner who live in Nan province and in Pethchabun province. At this Immigration office they will be able to assist you with extending your tourist visa or extending your marriage visa or retirement visa for 12 months while in Nan province.
You can also do you 90 day reporting at this immigration office. Note the map, telephone number, opening hours and also the email address for Thai immigration in Nan. Note that many foreigners who do apply for the 12 month extension in Nan had either applied for their 3 month visa at home or in Asia. Popular Thai embassies are the Thai embassy in Hull and the Thai Embassy in Washington. The Asian embassies which are popular are the Thai Embassy in KL, the Thai embassy in Singapore and the Thai embassy in Laos.
Thai Immigration Nan
117 Moo 4 Amphoe Mueang Changwat Nan
Opening Hours: 8:30am-4:30pm Monday to Friday
Service Area: Nan Province, Phrae Province, Uttaradit Province, Pethchabun Province