Franklin Park is a great area in Somerset county, great schools, low crime, awesome amenities all around. Home prices are high because you are paying for location, location, location and demand. New homes are more desired so Demand is Higher, They fit today's buyers needs, lifestyle and are either well appointed or have the potential with current design to be what the target buyer will be looking for in the future so they are not to be quickly obsolete in their design. All this equals Value, Value equals higher price.
Hope this helps.
Keller Williams Realty