Finding a home on a hill in Campbell could be challenging. Saratoga, Monte Sereno, and Los Gatos are next to Campbell and have hillside homes. A nice view could be a park, a golf course, or even a stream.
Saratoga real estate statistics: http://julianalee.com/saratoga/saratoga-statistics.htm
Monte Sereno real estate statistics: http://julianalee.com/monte-sereno/monte-sereno-statistics.htm
Los Gatos real estate statistics: http://julianalee.com/los-gatos/los-gatos-statistics.htm
I live across the street from a creek. It makes my home feel like I'm in a rural area but I can easily walk to downtown Palo Alto. Something similar or the view of a park may be a good choice for your dad. As he gets older his mobility is likely to decrease and being near coffee shops etc could provide an easy way to talk to friends etc.
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