San Carlos Homes San Carlos avg house size San Carlos avg lot size 777 Walnut St 208 30 Hilltop Dr 136 Lyndhurst Ave 2 Elm St 202 731 Chestnut St 100 3321 Brittan Ave 5 430 Erlin Dr 3327 La Mesa Dr 12 7 Poppy Ln San Carlos Real Estate Market Trends San Carlos house prices San Carlos avg days on market