. >> anthony chagoya is with the law foundation of silicon valley.up represents tenants facing eviction. the proposed plan would only apply to landlords with 50 or more existing units, and they could risk losing tax breaks if they don't comply. but still, chagoya says it would help a lot of people stay housed. >> unfortunately, you know, they'll get hit with that unexpected rent increase and it's at 10, 15, 20% an amount that they just frankly cannot afford. and the consequence of that is it causes displacement. >> however, some don't think this is the best way to keep housing costs from rising. derek barnes with the east bay rental housing association, says the focus should be on building more units, not capping rent. we have a supply demand issue here and we've had that for decades, and so we haven't really cracked the code on building the amounts of housing that we need, especially here in the bay area. he fears a rent cap would deter developers, even if there is an exemption. >> might very well, create a situation where they pull out of the marke