[Sangetsu]

As long as the numbers and location names are there, the letter will find it's way. Addresses written in Romaji are written in opposite order than when written in Japanese.

In Japanese, you start with the postal code, then the address and building name (if the building is named). Then the prefecture, city, and district. Then comes the name of the person whom you are writing.

If writing in Romaji, you write as you would in your own country; name, street address, city and prefecture, then
the postal code and the country.