What are the visa & residency requirements in Chiang Mai?

"In order to visit Chiang Mai, visitors must obtain a visa prior to their arrival. The process of applying for a visa involves submitting an application form, passport-sized photographs, and a valid passport to the Thai Embassy or Consulate in the visitor's home country. Depending on the type of visa, additional documents may be required. In order to obtain residency in Chiang Mai, Thailand, applicants must submit an application form, passport-sized photographs, a valid passport, and proof of financial stability to the Thai Embassy or Consulate in their home country. Depending on the type of residency, additional documents may be required. Once the application is approved, the applicant will receive a Non-Immigrant Visa, which must be used to enter Thailand. Upon arrival, the applicant must apply for a residence permit at the local Immigration Office," said another expat in Chiang Mai, Thailand.