Letter Address Format Apartment. If the person lives in an apartment, write the apartment number followed by a slash and then the building number. Without this information on the envelope, your letter may look less professional or may not be delivered to the recipient.
So he said he thinks that would be written as: Jane doe 123 berry lane, unit b new york, new. The usps postal addressing standards says a complete address consists of only three lines as follows:
The return address goes in the top left and the postage stamp in the top right.
Remember to add a comma after the street address when you address a letter to an apartment. Under the name, write the street address, which consists of the house or building number and the name of the street. 202. the abbreviation for suite is ste. if the space available for the address is not large enough for you to write apt, use the hash symbol in its place: Jane doe 123 main st, building e, apartment 2 new york, ny 11111