I have owned Vanguard long term CA muni bond fund since 2009. The fund is so called long term, but it is actually in high spectrum of intermediate term bond fund as the average duration is only 6.4 years. There were many good times to buy it like any time from 2009-2012. The best time was when “star analyst” Whitney called for massive default in muni bond which never happened. True star manager like Bill Gross added massive position in muni bond after Whitney made the call which causeed big selloff in muni bond. My entry point was about 4% YTM and with the yield down to 1.8% now, there is significant risk of losing value when interest goes up. I personally feel it is too late to jump into the boat. Be careful when tempted to the 1.8% yield using bank saving rate as reference.
I am still holding the position, and if Fed raise fed fund rate to 1% (likely in 3 baby steps), I’ll dump the fund and change position to CA muni money fund.