How To Write Address If You Live In An Apartment . Let’s dissect that with a formula and example. Include the apartment number after the street name. Address With Apartment Apartment Decorating Ideas from apartment.charmlab.org So an american would write something like “242 west waynesmith street, apartment 404, barnston, missouri 23104.” it. You can use 'the smith family,' mr. In the first paragraph, explain that you are writing to verify that the tenants live on your property.