But now you have tech so well entrenched.. you have Chinese capital by the billions that has paid cash for prime BA real estate along with many other nationalities.. any area can suffer a correction.. but unless there is a Major Earth quake or some other outside influence . 

Since the garage door is THE most prominent feature on the front elevation, check out this style, that would perfectly match the windows:http://www.clopaydoor.com/avanteWith a similarly architecturally appropriate front door, and proper column in place of the wrought iron, without building ANYthing like a portico, you'll completely transform the front elevation, and bring the house right into this century.

@Austin Mudd   started in 1975... in Northern CA.So it was rough then end of Viet nam war we were in a recession.. but I sold land and it was somewhat insulated.Carter years and massive run up in interest rates crippled the RE markets.then a regional even Earth quake and War in 1989 put N.

I know where I was I was watching the world series between Oakland and SF in my office in San Mateo when all of a sudden my puter monitor flew off my desk and we had a very big shake.. couple that with the war and by 1990 many parts of the bay area even such hallowed ground as SF  Los Altos hills etc etc saw price drops in the 30 to 50% range.. and it stayed flat like that until about 97 to 98 then made new highs in 2000 prior to the dot com bubble .... so it was about 10 years to recoup... equities and stabilize a region.. so your thought process is not that wild of thinking... and its not that is a low probability its a certainty that there will be a quake in socal and SF Bay area no doubt about that.. just don't know when.. they seem to be spaced out in N cal about 80 years.. so looking at 2060 is for the next big loma Prieta type event..

My sister's place had straps but they weren't tight to the wall, when the big quake hit the water tank ripped the strapping out of the wall and smashed a piece of ducting that came right off the furnace next to it.

BUT, code here required cement below the frost line.However, you're in a 'quake zone' so that could be an interesting code scenario per se, as how do you guarantee secured piers in prep for a quake???

Totally different @Milian Bonillo an earth quake is an act of God. 

These guys have already said this - but I'll add.I've also torn down a brick chimney by myself due to earthquake damage (2001 Nisqually quake).

There is a 4 plex in Sherman Oaks going for 1.2 mil and the owner bought it for 12k in 1972 ...must have been right after the 71 quake...He will reap a whopping 100 fold appreciation rate for that move.

California is awesome, low tax rates and insurance (out of the earth quake zone).