"La comunidad" is the house owners association, also called "community of owners" when translating that concept into English. Since in Spain many people live in flats, flat owners need to meet in order to decide about several matters related to the whole building, like the use of shared spaces, cleaning services, trash collection, renovation work, etc.

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Note added at 26 minutos (2017-03-31 09:19:18 GMT)
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I think "house owners meeting" or "house owners association meeting" is a more correct and precise term than "community of owners", given that "community" may have several different meanings and lead to ambiguity, eventhough it is quite frequently used in the English version of Spanish websites related to housing.

In Spain, most buildings containing multiple units, be they residences, offices or a combination, tend to have residents' associations. These will include owners of the individual units and, in many cases, tenants. The association's purpose is to decide on, and pay for via levy, maintenance, repairs, security, etc. It will meet a set number of specified times a year, plus on an ad hoc basis if circumstances require.

"Community" is already explained and "committee" meaning a group of people with an aim in common.