diff --git a/src/main/resources/mappers/estimate/estimateMapper.xml b/src/main/resources/mappers/estimate/estimateMapper.xml
index ca0bbf23..a70238e1 100644
--- a/src/main/resources/mappers/estimate/estimateMapper.xml
+++ b/src/main/resources/mappers/estimate/estimateMapper.xml
@@ -411,9 +411,16 @@
                    AND
                      TPC.PLAN_NO = #{planNo}
              )A
-                 LEFT OUTER JOIN T_PART_ROOF_ITEM_ESTIMATE TRI (NOLOCK)
-                                 ON A.OBJECT_NO = TRI.OBJECT_NO
-                                     AND A.PLAN_NO = TRI.PLAN_NO
+            LEFT OUTER JOIN (
+                SELECT TRI2.*, TRE.ROOF_SURFACE -- 필요한 컬럼들
+                FROM T_PART_ROOF_ITEM_ESTIMATE TRI2 (NOLOCK)
+                    INNER JOIN T_PART_ROOF_ESTIMATE TRE (NOLOCK)
+                    ON TRI2.OBJECT_NO = TRE.OBJECT_NO
+                    AND TRI2.PLAN_NO = TRE.PLAN_NO
+                    AND TRI2.ROOF_SURFACE_ID = TRE.ROOF_SURFACE_ID
+            ) TRI
+                ON A.OBJECT_NO = TRI.OBJECT_NO
+                AND A.PLAN_NO = TRI.PLAN_NO
             )B
         ]]>