From Wikipedia, the free encyclopedia Room number
Room number
A room number is a number assigned to a room within a A letter may appear before the numbers to indicate a
building. Its purpose is to identify a particular room, and particular building or wing. For example, Room D149 is a
help visitors locate that room. Room numbers may con- room in D building.
sist of three digits, but can be any number of digits. An offset may be used to accommodate unnumbered
The room number is generally assigned with the first floors. For example, in a building with floors labeled G,
digit indicating the floor on which the room is located. 12,
M, 1, 2, ..., 11 and 12 the 4th room in each of those floors
For example, room 412 would be on the fourth floor of 104, 114, 124, 134, 224, 234,
could be numbered 104 114 124 134 ..., 224 and 234 re-
the building; room 540 would be on the fifth floor. Build- spectively — with an offset of 11 in the floor numbers.
ings that have more than ten floors will have four digits This trick is sometimes used to make the floor number
assigned to rooms beyond the ninth floor. For example, slightly less obvious, e.g. for security or marketing rea-
room 1412 would be on the 14th floor. sons.
The second digit may represent the wing, or section,
of the building in which the room is located: room 540
will typically be found adjacent to room 542, and room
Apartment Numbers
532 adjacent to room 530. In a four digit room number, Some apartments are numbered using the regular room
this digit will be the third digit instead of the second. number assignment method, where apartment 1412 will
The third digit is then assigned based on the side of be the 12th room on the fourteenth floor. Some apart-
the hall on which the room is located: usually, one side of ments, however, are assigned with a number followed by
the hall has odd-numbered rooms and the opposite side a letter. There may be one or two numbers in the apart-
has even-numbered rooms. In a four digit room numbers, ment number, followed by just one letter. For example,
this digit will be represented by the fourth digit instead apartment 14R would be on the fourteenth floor. Apart-
of the third. Where a room is subdivided, the subdivisions ment 7B would be on the seventh floor. Some apartment
are generally denoted by appending a letter suffix to the buildings may use compass points or the letters F, C, or
room number: for example, room 412 may be subdivided R to indicate the front, center, or rear apartment on a
into rooms 412A and 412B. given floor, or a combination of the two. For example,
apartment 4RS would be on the 4th floor, and is the south
apartment in the rear of the building.
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Categories:
• Building
• Identifiers
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