I see a lot of dense 3-story housing complexes being build in the south bay. For example along Montague expressway near the great mall near the new BART station

I see a lot of dense 3-story housing complexes being build in the south bay. For example along Montague expressway near the great mall near the new BART station Many mixed residential/commercial buildings also. I think the real problem area of housing expansion is San Francisco which is not doing much of this.