In the French occupation zone Württemberg-Hohenzollern, the mandatory tax stamps (Notopfer Berlin) were given the red overprint "Housing tax" by the Used July 1 to September 13, 1949.


Michel No. 1 cut


Michel No. 2 perforated.


Michel 3a


Michel 3b


After that, until December 31, 1949, there were own yellow-orange-colored housing brands, (Michel No. 3).

At the top of the stamp-image, the word "WOHNUNGSBAUABGABE" and "STEUER-2-MARKE" appear in yellow antique writing in a white bar that fills the full width.
A lower white bar shows "WÜRTTEMBERG-HOHENZOLLERN" in the same yellow font.
The residential building stamps did not have to be used in the district and city of Lindau.
From January 1, 1950, "Notopfer Berlin" applied to the entire Federal Republic.


Source Wikipedia