Casa Loma S-D 1st Addn Listings Summary. Avg Price in Casa Loma S-D 1st Addn: $199,900 / County Avg $690,300. Avg Taxes in Casa Loma S-D 1st Addn: $1,400 / County Avg $5,000. Avg Sq. Ft. in Casa Loma S-D 1st Addn: 1,134 / County Avg 1,883. Avg Price per/sqft in Casa Loma S-D 1st Addn:$176 / County Avg $367. Avg Year Built in Casa Loma S-D 1st Addn: 2006 / County Avg 1999. Avg Days on Website in Casa Loma S-D 1st Addn: 14 / County Avg 113