Prop 13 affects all of CA, you don't see prices in LA going up 100% in 3-5 years like you do in most south bay cities.
And overturning it for commercial real estate won't do much to help housing prices, except for any re-zoning that happens. Overturning prop 13 or amending it might not happen for 5+ years, if ever. Note: https://www.bizjournals.com/sanjose/news/2017/07/19/californ...
Over the short, medium, and long-term then, building more is the only choice (SB 35, AB 71). Since you see prices not increasing as much in other parts of the state, it means building more can in fact keep prices down, as the deep-east bay construction shows.