In the case of Londoner v. City of Denver (210 U.S. 373 (1908)), upon the request of the
majority of residents of a street, Denver would pave the street and assess a
fee to all residents, even the ones that didn't want the street paved.
Residents were given notice, but were only allowed to object in writing.
The US Supreme Court found
that due process requires that the
city grant the complaining residents an oral proceeding. The procedure
involved must be enough to give the complainant "the right to support
his allegations by oral argument, however brief; and, if need be, by
proof, however informal."
Londoner is often
cited for the proposition that when an agency is acting in a judicial
capacity they are generally required to provide individual due
process.