New Mexico Statutes Chapter 47. Property Law § 47-7-12. Declaration; apportionment of interest

A. the square or cubic footage in the unit as a percentage of the square or cubic footage in all of the units;

B. the value, as that term is defined in the declaration, of the unit as a percentage of the value of all of the units; or

C. the unit itself as a percentage of all of the units in the property. The percentage interest shall change if additional units are added after the filing of the declaration.