diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index e7c2617..ace2673 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -28,6 +28,7 @@ model SD_SURVEY_SALES_BASIC_INFO {
   STORE_ID              String?                      @db.NVarChar(100)
   CONSTRUCTION_POINT_ID String?                      @db.NVarChar(200)
   SUBMISSION_TARGET_NM  String?                      @db.NVarChar(200)
+  DEL_YN                String                       @default("N", map: "DF__SD_SURVEY__DEL_Y__4D5F7D71") @db.NVarChar(20)
   DETAIL_INFO           SD_SURVEY_SALES_DETAIL_INFO?
 }
 
diff --git a/src/app/api/survey-sales/service.ts b/src/app/api/survey-sales/service.ts
index 5fc79cd..1418730 100644
--- a/src/app/api/survey-sales/service.ts
+++ b/src/app/api/survey-sales/service.ts
@@ -168,7 +168,8 @@ export class SurveySalesService {
     if (Object.keys(roleCondition).length > 0) {
       where.AND.push(roleCondition)
     }
-    return where
+    /** 삭제된 매물 제외 */
+    return { AND: [...where.AND, { DEL_YN: { equals: 'N' } }] }
   }
 
   /**
@@ -259,7 +260,7 @@ export class SurveySalesService {
   async fetchSurvey(id: number, isPdf: boolean): Promise<SurveyBasicInfo | ApiError | Blob> {
     // @ts-ignore
     const result = await prisma.SD_SURVEY_SALES_BASIC_INFO.findFirst({
-      where: { ID: id },
+      where: { ID: id, DEL_YN: 'N' },
       include: { DETAIL_INFO: true },
     })
     if (!result) {
@@ -329,24 +330,13 @@ export class SurveySalesService {
   async deleteSurvey(id: number) {
     await prisma.$transaction(async (tx: Prisma.TransactionClient) => {
       // @ts-ignore
-      const detailData = await tx.SD_SURVEY_SALES_BASIC_INFO.findUnique({
+      await tx.SD_SURVEY_SALES_BASIC_INFO.update({
         where: { ID: Number(id) },
-        select: {
-          DETAIL_INFO: true,
+        data: {
+          DEL_YN: 'Y',
+          UPT_DT: new Date(),
         },
       })
-
-      if (detailData?.DETAIL_INFO?.ID) {
-        // @ts-ignore
-        await tx.SD_SURVEY_SALES_DETAIL_INFO.delete({
-          where: { ID: Number(detailData.DETAIL_INFO.ID) },
-        })
-      }
-
-      // @ts-ignore
-      await tx.SD_SURVEY_SALES_BASIC_INFO.delete({
-        where: { ID: Number(id) },
-      })
     })
   }