The Postal Service confirmed one key opens all the cluster mailboxes in a given region. "I would think the first thing is they would want to change the locks on those boxes," MacDonald said.

A USPS spokesperson said when applicable, customers, apartment property management and homeowner associations are responsible for maintaining cluster box units.

There are plenty of new developments popping up in the area, which come with some roadblocks like where to put mailboxes.

A USPS spokesperson said when applicable, customers, apartment property management and homeowner associations are responsible for maintaining cluster box units.

Local guidelines are causing headaches for both homebuilders and realtors who claim they are unaware of a new mandate from the United States Postal Service (USPS) that now requires cluster mailboxe… ...