In order to declare the existence of a common-law marriage, it is necessary, first of all, to be a Colombian or foreign person with residence in the country and to present it before a Notary or Conciliation Centre:

If one or both persons are foreign nationals, the civil registration must be apostilled  or legalised. Additionally, a single status certificate issued by the authority indicated by each country is required. If these documents are in a language other than Spanish, they must be translated and cannot be valid for more than 3 months. Keep in mind that all documents issued abroad, in order to be valid in Colombia, must be apostilled or legalised in the country where they are issued.

Note: the document that is issued at the notary's office or conciliation centre, after declaring the UMH, is a public deed (in the case of the notary's office and is not an extrajudicial declaration) or a deed of conciliation (in the case of the conciliation centre). Either document must be signed by the couple jointly and have the same legal recognition.