When you are replacing an existing mailbox or installing a new mailbox, make sure it will be easily accessible for your mail carrier. Here are the guidelines for placing a mailbox according to California Mailboxes:
Position your mailbox 41 to 45 inches from the road surface to the bottom of the mailbox or point of mail entry. The mailbox must be 6 to 8 inches back from the curb. Put your house or apartment number on the mailbox. The full street address must also be placed on the box.
The post hole should be deep enough to hold 6 inches of gravel. Set the post to support the mailbox at the correct height. Pour about 6 inches of gravel into the hole to allow water to drain properly. Now prepare the concrete mix according to manufacturer’s instructions. Set the post and fill the hole with the prepared concrete. Tamp the mix while filling to eliminate air pockets. Make sure the post is plumb.
Attach the mailbox to the post. Attachment brackets designed to fit a standard 4 x 4 post are available, but check to see if they come with your mailbox before purchasing them separately.
Make sure that the mailbox assembly is level. Adjust as needed. Finally label the front and side of the box with your house numbers and name, if you wish. The numbers should be at least 1 inch high, so that are easily visible.
These easy steps will help you install your brass mailboxes.