The literature on community activity has largely ignored the housing u
nit of the apartment building. However, as urbanization continues and
more people live in multiple family dwelling units, its importance in
community work and in social work in general can only increase. Using
data from 532 residents in the greater Tel Aviv area, this paper exami
nes the mechanics of the house committee: how it was set up, 'resident
s' meetings and dues collections, the effects on it of the size of the
town and of the building, and the influence of professional community
workers. In turn, the effects of all these variables are examined on
the holding of social activities in the building. Implications are not
ed on the democratic nature and representativeness of house committees
, the social cohesion of apartment buildings and neighbourhoods, and t
he effects of professional intervention at the level of the apartment
building.