Publication 28 - Postal Addressing Standards > Appendix I > I2 Address Formats > I22 Apartment Buildings and Condominiums
There are two basic address formats for apartment buildings and condominiums.
Certain condominiums are located on an unnamed street and may not have an assigned number. The name of the condominium substitutes as the street name and the number 1 is used when no building number exists.
When there are multiple buildings (or towers) with the same name, the building number becomes the primary number.
COND VERDE APT 1120
1 COND VERDE APT 1120
VISTA SUITES III APT 104
3 VISTA SUITES APT 104