Green’s Dictionary of Slang

a house.

1859		Hotten Dict. of Modern Sl. etc. 125: birk. A ‘crib,’ ? house.
1864, 1867, 1870		Hotten Sl. Dict.
1873		Sl. Dict.
1882		Sydney Sl. Dict. (2 edn) 11: Birk - A crib, a house.