4840 N Avenida De Castilla sold for 825K; what is remarkable is that it sold for 1.2 million 7 years ago; that is a lot of depreciation. But that is par for the course for a lot of high- end Foothills homes. Those priced over million have seen less sales this year than last year by about a third, while the other price-ranges have clearly seen more sales. This one is 3,452 square feet; is 18 years old and is sited on 1.28 acres. It has been listed with Long Realty for about 10 months.