I suggest that my clients get a PG&E reading if the house is close to power lines. The testing is free, you need the seller's permission and it shows if the home has increased electrical units in and around the area. It generally comes back that the property is within the 'safe' range.
I agree with all the comments below. I live in San Ramon, love the area and was never concerned about the reactors. Demand for housing in the area indicate not too many other buyers are concerned either. This may be a subjective concern for you, which is fine but from the standpoint of homes sold....we outpace many other areas.
I have lived my entire life in the San Ramon Valley even when we referred to Lawrence Livermore Lab as the "Rad Lab" short for Radiation Lab! Most of us have never given a second thought to the reactors in the area and I would venture to say the vast majority of people have no idea they even exist. For these reasons they have not affected real estate values. Here is a great article for you:
I think the fact that some homes in San Ramon have overhaed power lines in the vicinity have a far greater impact (but only on those nearby homes) than any 5 meagawatt or so reactor.
Hey if we worried about everything that could happen, what are we doing in California? Isn't "The Big One" due some time soon?
Zip, nadda, zero, zilch.
The most telling comment from below and the biggest clue as to the correct answer to this question is Bernardâ€™s response (heâ€™s been selling real estate in the area a LONG time), when he asks, â€œWhere, exactly, are these nuclear reactors you refer to?â€
Iâ€™m guessing in all his years as a resident and a Realtor, this is the first time heâ€™s heard of this â€¦
I have been living in Pleasanton for 7 years and the nuclear reactors have never bothered me. I sell many homes in Pleasanton and San Ramon, and properties are selling with multiple offers in both these cities. So in other words it does not seem to be a problem for all the thousands of people living and buying here.
Hope that helps.