Room number

A housing or door number identifies a self- subunit, for example, an apartment or an operating room, in a composite of several such subunits house, which can possibly extend the same over several floors up. Room and / or room numbers are instead in hotels and offices usually used.

Situation in Austria

Door numbers were so introduced in the old Austrian countries already in 1777, seven years after the house numbers, as so-called family numbers. Since the 1990s, spreads in Austria for home and door numbers and the colloquial term top (of topos, Greek for "place" ).

A typical official address in Vienna ( cf. Central Register ) would read " 1070 Vienna, Kaiser Strasse 53, 2 stairs, door 19 " (short: Kaiserstr 53/2/19. ). At the entrance panel of the door entrance, you then can find TOP 19

High counted is by doing the following:

• The numbering begins in the lowest floor, excluding the basement, so usually on the ground floor.
• Within a projectile passes the numbering in either a clockwise or counter-clockwise. In rare cases, in a different system or no, depending on the architectural structure of the house / basement.
• In the next higher floor then the numbering continues up to its highest floor.
• Has a house several stairs, the door numbering usually starts back again by stairs, but in some exceptions sets the numbering continues where the last door number of the previous staircase ceased. This can be a disadvantage if a bullet is added structurally example, on a staircase. In the case, however, can be a solution, by providing the newly created apartments with a number additive (eg a).
• For reasons of superstition 12a, 14 or even 18 was in apartment buildings often used instead of the door number 13.

Ensuring the unambiguous assignment

If a house built, the subunits assigned consecutive numbers. If later subdivided by subsequent conversion work house subunits in several or more combined into one or even added new levels with new subunits, as is aided by the number of additions, so that the rest of the house subunits can continue to keep your numbers.

Situation in Switzerland

In Switzerland, apartments are often provided as a subunit of a building with an apartment number. Distinction can be made between a truly attached, physical Apartment and a purely administrative Apartment, which is only used by governments and mentioned in leases. It is recommended to Apartment from three apartments per floor.

Situation in Poland

In Poland Flats as sub-units of residential houses are almost all equipped with flat numbers. What's more: there - recently also for safety reasons - are rarely specifically labeled letterboxes, door or doorbell signs, the Apartment in Poland is the only reliable and practically mandatory identification feature a flat ( and its inhabitants ). Please note this is especially when sending mail: the apartment numbers are hung either a slash at the house number, eg "20/ 55", or with a small "m" ( for mieszkanie = address ), for example. " 20m55 ".