Great question! Everyone has an opinion, I like to examine the data.
Take a look at the Local Market Trends section of our website and click on the specific link for "Palo Alto Menlo Park Portola Valley" http://stucarson.com/LM-TrendsReports
In summary, Portola Valley Ranch (PVR) appears to have gained the same approximate $200/sq ft in value as homes in general in Portola Valley (PV) & Palo Alto (PA) have.
Homes in PVR have ranged from 8 days on market (DOM) to 50 DOM to sell, while home in over PV have ranged from 5 to 130, which is in stark contrast to Palo Alto/Menlo Park which has been from 5 to 30 DOM.
Lastly homes in PVR have been selling for 92% to 100% of asking price, where as overall PV has been 95% to 101%, and check out Palo Alto-Menlo Park at 104% to 109% over asking price.
I should also mention that the # of homes in the sample pool for PVR were and are very low since there are only 200 homes in the entire community and for example in the last year 3 sold and in the last 5 years 22.
If you like the idea of working with an agent that is smart, trustworthy & caring... call Davlyn or I, we'd love to add you to our list of satisfied clients, see here for our client testimonials http://www.trulia.com/voices/profile/Real_Estate_Pro-Los_Gat
Let's have a fact based discussion regarding the great questions you've raised about resale value and other financial factors and balance those with the more subjective factors like a sense of community, quality of life, convenience and support of equestrian and other hobbies, etc...
Stu Carson 408-209-0849
Davlyn Giovanetti-Quick 408-461-1276