diff --git a/apps/as/src/entities/instl-sncn/model/instl-sncn-interface.ts b/apps/as/src/entities/instl-sncn/model/instl-sncn-interface.ts
index fbd58d39a..7593d5f8e 100644
--- a/apps/as/src/entities/instl-sncn/model/instl-sncn-interface.ts
+++ b/apps/as/src/entities/instl-sncn/model/instl-sncn-interface.ts
@@ -85,6 +85,7 @@ export interface InstlSncnCklstResultSaveDto {
   cklstSn: number;
   cklstArtclSn: number;
   cklstRvwSn: number;
+  rvwStpComCd: string;
   selected: "Y" | "N" | null;
 }
 
diff --git a/apps/as/src/pages/instl-sncn/ui/cnfm-regist-page.tsx b/apps/as/src/pages/instl-sncn/ui/cnfm-regist-page.tsx
index c607911d0..c5140496b 100644
--- a/apps/as/src/pages/instl-sncn/ui/cnfm-regist-page.tsx
+++ b/apps/as/src/pages/instl-sncn/ui/cnfm-regist-page.tsx
@@ -68,6 +68,7 @@ const emptyAmt = (): BzAmtRow => ({ bscPl: "", budgetReflct: "", thtiDsgn: "" })
 
 const num = (v: string) => parseFloat(v.replace(/,/g, "") || "0");
 const fmt = (v: number) => (isNaN(v) ? "" : v.toLocaleString());
+const DEFAULT_RVW_STP_COM_CD = "LOCAL"; // LOCAL.지자체,ENV.환경청,KECO.환경공단 (검토단계공통코드:RVWSTP 참조)
 
 /* ------------------------------------------------------------------ */
 /* 공통 셀 컴포넌트 분리: widgets/cnfm/ui/cells.tsx에서 import */
@@ -95,7 +96,7 @@ import { NumCell, ReadCell, PrivacyConsent, EtcAttachments } from '@/widgets/cnf
  * - 주요 배열 (위치: 최상위  내부)
  *   - bizSclList: [{ cnstpSeCd, bscPl|bscPlanQty, budgetReflct|bgtRfltQty, thtiDsgn|tstmDesignQty }, ...]
  *   - bizCstList: [{ acntgSeCd, bscPlanAmt|bscPl, bgtRfltAmt|budgetReflct, tstmDesignAmt|thtiDsgn }, ...]
- *   - cklstResultList: [{ cklstSn, cklstArtclSn, cklstRvwSn, rvwRsltAnmlyYn: 'Y'|'N'|null, ... }, ...]
+ *   - cklstResultList: [{ cklstSn, cklstArtclSn, cklstRvwSn, rvwStpComCd, rvwRsltAnmlyYn: 'Y'|'N'|null, ... }, ...]
  *   - esntlFileList: [{ esntlAtchFileId, esntlAtchFileNm, esntlAtchYn, atflCd, atflId, orgnlFileNm, ... }, ...]
  *   - etcFileList: [{ atflId, orgnlFileNm, atflFlieSz, upldUserNm, atflCd, ... }, ...]
  *
@@ -565,8 +566,10 @@ function CnfmRegistPage({ initialData }: { initialData?: any } = {}) {
     return ordered;
   }, [cklstTree]);
 
-  const cklstKey = (row: CklstTreeNode) =>
-    `${row.cklstSn}_${row.cklstArtclSn}_${row.cklstRvwSn}`;
+  const cklstKey = (row: CklstTreeNode, rvwStpComCd?: string) => {
+    const stepCode = rvwStpComCd ?? DEFAULT_RVW_STP_COM_CD;
+    return `${row.cklstSn}_${row.cklstArtclSn}_${row.cklstRvwSn}_${stepCode}`;
+  };
 
   useEffect(() => {
     setCheckResults((prev) => {
@@ -610,7 +613,8 @@ function CnfmRegistPage({ initialData }: { initialData?: any } = {}) {
 
     const lookup = new Map<string, string>();
     for (const r of results) {
-      const key = `${r.cklstSn}_${r.cklstArtclSn ?? ""}_${r.cklstRvwSn}`;
+      const stepCode = r.rvwStpComCd ?? DEFAULT_RVW_STP_COM_CD;
+      const key = `${r.cklstSn}_${r.cklstArtclSn ?? ""}_${r.cklstRvwSn}_${stepCode}`;
       if (r.rvwRsltAnmlyYn === "Y" || r.rvwRsltAnmlyYn === "N") lookup.set(key, r.rvwRsltAnmlyYn);
     }
 
@@ -645,6 +649,7 @@ function CnfmRegistPage({ initialData }: { initialData?: any } = {}) {
         cklstSn: row.cklstSn,
         cklstArtclSn: row.cklstArtclSn,
         cklstRvwSn: row.cklstRvwSn,
+        rvwStpComCd: DEFAULT_RVW_STP_COM_CD,
         selected: checkResults[cklstKey(row)] ?? null,
       }));
 
diff --git a/apps/as/src/pages/instl-sncn/ui/cnfm-view-page.tsx b/apps/as/src/pages/instl-sncn/ui/cnfm-view-page.tsx
index 98552b0ab..0e56805f3 100644
--- a/apps/as/src/pages/instl-sncn/ui/cnfm-view-page.tsx
+++ b/apps/as/src/pages/instl-sncn/ui/cnfm-view-page.tsx
@@ -298,7 +298,7 @@ function CnfmViewPage({ id }: { id: string }) {
                 </tr>
               ) : (
                 cklstResultList.map((row: any) => {
-                  const key = `${row.cklstSn}_${row.cklstRvwSn}`;
+                  const key = `${row.cklstSn}_${row.cklstRvwSn}_${row.rvwStpComCd ?? "STEP01"}`;
                   const hasResult = row.rvwRsltAnmlyYn === "Y" || row.rvwRsltAnmlyYn === "N";
                   const showRadios = row.bchckUseYn === "Y" || hasResult;