I live a suburban area with a walkability score of 50 (Zillow gives it a 72). I do like walking/riding my bike to the grocer (very upmarket so I won't do the vast majority of my shopping there, it's great for staples, bread, wine and the special occasion $20/lb meat or seafood), the library, the elementry school, parks, coffee shop etc. It is not the inner city or a small town so it doesn't have that ambience. It is safe with great schools and it's easy to get around whether by foot, bike or car. Does walkability add to housing value here? I'm not sure. I'm sure it does not hurt, but I'm betting more people will be interested in the safety of the neighborhood and the quality of the schools than whether or not they can walk to a restaurant or grocer. That would merely be a lagniappe.