Can my Spanish wife apply for a marriage visa at an immigration office outside Bangkok?

@Kool ******

. Pay attention. He said "my wife " in the first sentence of his post . The rest of what you said is 100% correct

The first thing she must do, and an agent can not help her with this, is get a right to marry notarized document from her embassy, basically that she is either single never been married, divorced with divorce decree documents, or widowed with the death certificate. After she gets this you can get married at a local amphur, with copies of her passport, copies of your Thai ID card, and copy of the house book you are listed in. After you are married to get the type O visa based on marriage she can only use the immigration officer in the district her TM30 was filed for with her living address. After you are go to the immigration office and get a list of documents and pictures needed for the visa, then the visa extension. Keep all the documents because after the first time everything after that is all the same except new bank letters and new pictures, unless she moves. It is quite easy to do. It just takes time, and there isn't really anything an agent can help you with. The financial requirement is different for a foreign woman marrying a Thai man, so be very aware of that when you check the requirements at immigration.

We're you married in Thailand?

Marriage visa/extension application needs to be done at imm office in your residential province.

The good news is Thai men don't need 400k baht in a bank for a visa for a foreign wife.