diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab_Modal.ts b/M01_MasterData/M01_MasterData_UI_LogicLab_Modal.ts
index 619b2a157..d6e8dede0 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab_Modal.ts
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab_Modal.ts
@@ -454,6 +454,22 @@ export function openMaterialModal(target: ModalTarget): void {
     };
     setSum(known);
     const rate = el("div", { className: "m01lab__modal-body" });
+    /** `prices` 에 있으면 그대로 · 없으면 키로 찾아 옴 — 못 찾으면 「관리자 값 미확정」 */
+    const lookup = (ref: string, label: string): void => {
+      const show = (brief: ElementBrief | null): void => {
+        rate.replaceChildren(
+          brief ? priceView(ref, brief) : muted(`${label} — ${tl("Pill_NoValue")}`),
+        );
+        setSum(brief);
+      };
+      rate.append(muted("…"));
+      const cached = target.prices[ref];
+      if (cached) show(cached);
+      else
+        void searchElements(groupOf(ref), ref)
+          .then((got) => show(got.items.find((it) => it.ref === ref) ?? null))
+          .catch(() => show(null));
+    };
     if (known && priceRef) {
       rate.append(priceView(priceRef, known, target.usedSlot));
     } else if (logicKey) {
@@ -484,25 +500,9 @@ export function openMaterialModal(target: ModalTarget): void {
       if (!ref) {
         const names = [...element.matchAll(/\{([^}]+)\}/g)].map((m) => m[1]).join(" · ");
         rate.append(muted(`${target.unitText || names} — ${tl("Pill_Unresolved")}`));
-      } else {
-        const show = (brief: ElementBrief | null): void => {
-          rate.replaceChildren(
-            brief
-              ? priceView(ref, brief)
-              : muted(`${target.unitText ?? ref} — ${tl("Pill_NoValue")}`),
-          );
-          setSum(brief);
-        };
-        rate.append(muted("…"));
-        const cached = target.prices[ref];
-        if (cached) show(cached);
-        else
-          void searchElements(groupOf(ref), ref)
-            .then((got) => show(got.items.find((it) => it.ref === ref) ?? null))
-            .catch(() => show(null));
-      }
+      } else lookup(ref, target.unitText ?? ref);
     } else if (element) {
-      rate.append(muted(`${element} — ${tl("Pill_NoValue")}`));
+      lookup(element, element); // 더한 줄(M02) 등 `prices` 에 없는 요소 — 키로 찾아 옴(725-4)
     }
     body.replaceChildren(
       ...(target.edit ? [target.edit(close)] : []),
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Labor_RowModal.ts b/M02_MasterTemplete/M02_MasterTemplete_Labor_RowModal.ts
index 395279114..2696ff5d8 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Labor_RowModal.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Labor_RowModal.ts
@@ -14,6 +14,7 @@ import { createButton, el, showToast } from "@ui/ui_template_elements";
 import { askConfirm, openModal } from "@ui/ui_template_modal";
 import { createText } from "@ui/ui_template_text";
 import type { ItemLogic } from "./M02_MasterTemplete_Api_Fetch";
+import { HOPYO_BUILT } from "./M02_MasterTemplete_Hopyo_Check";
 import type { LaborCalc, LaborMat, LaborRow, MatMarkKey } from "./M02_MasterTemplete_Labor_Api";
 import { openLaborInput } from "./M02_MasterTemplete_Labor_Input";
 import { logicMatRows } from "./M02_MasterTemplete_Labor_LogicMats";
@@ -175,6 +176,7 @@ export function openRowModal(o: RowModalOptions): void {
         try {
           const name = await saveAsSk(row, got?.patch ?? row.패치 ?? null, o.title, o.unit);
           showToast(t("Saved").replace("{k}", name), "success");
+          document.dispatchEvent(new Event(HOPYO_BUILT)); // 좌측 단가산출 나무 다시 읽음(725-4)
         } catch (error) {
           return showToast(error instanceof Error ? error.message : String(error), "error");
         }
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Sangeun_Detail.ts b/M02_MasterTemplete/M02_MasterTemplete_Sangeun_Detail.ts
index a7f97bb36..7ad6f00ee 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Sangeun_Detail.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Sangeun_Detail.ts
@@ -139,6 +139,9 @@ export function mountSangeunDetail(
   );
 
   const opened = (): boolean => (doc.열린입력 ?? []).length > 0;
+  // 바탕 없는 SK 의 지문 = 이름 · 단위 따라 바뀜 — 바탕이 있을 때만 M01 개정으로 봄(725-3)
+  const revisedBase = (): boolean =>
+    !!(doc.바탕 && doc.바탕판 && ans?.바탕판 && doc.바탕판 !== ans.바탕판);
   const baseKey = (): string | null => doc.바탕?.로직 ?? null;
 
   /** 바탕 없는 · 참조 바탕 SK 의 기본정보 자리 줄 */
@@ -191,7 +194,7 @@ export function mountSangeunDetail(
     };
     const baseName = base ? `${base.logic.키} ${base.logic.이름}` : null;
     const baseText = baseName ?? doc.바탕?.참조?.키 ?? L("M02_SangeunNoBase");
-    const revised = !!(doc.바탕판 && ans?.바탕판 && doc.바탕판 !== ans.바탕판);
+    const revised = revisedBase();
     pick.hidden = !edit || !!doc.바탕 || !!doc.뺀줄?.length || !!Object.keys(doc.덮개 ?? {}).length;
     head.replaceChildren(
       field(L("M02_Name"), "이름"),
@@ -211,7 +214,7 @@ export function mountSangeunDetail(
 
   function drawNotes(): void {
     const lost = ans?.짝잃음 ?? [];
-    const revised = !!(doc.바탕판 && ans?.바탕판 && doc.바탕판 !== ans.바탕판);
+    const revised = revisedBase();
     notes.replaceChildren(
       ...(fail || ans?.까닭
         ? [createBanner({ tone: "danger", text: fail || String(ans?.까닭) })]
diff --git a/resources/tester/test_717_2b_sangeun_detail.py b/resources/tester/test_717_2b_sangeun_detail.py
index d22602679..cacc11c8f 100644
--- a/resources/tester/test_717_2b_sangeun_detail.py
+++ b/resources/tester/test_717_2b_sangeun_detail.py
@@ -233,3 +233,15 @@ def test_화면_문서_꼴_서버_저장_셈(world):  # noqa: F811 — 가져온
     assert added["수량"] == pytest.approx(0.01)
     assert added["단가"] == pytest.approx(lines["labor:LB000002#0"]["단가"])
     assert got["기준"]["계"] == pytest.approx(sum(x["금액"] for x in got["줄"]))
+
+
+def test_725_바탕_없으면_개정_안_뜸_새_SK_나무_다시_읽음_더한줄_단가_찾음():
+    """725-3 바탕 없는 SK 는 이름 · 단위 따라 지문이 바뀌어도 M01 개정 아님 · 725-4 새 SK 뒤 나무 알림 ·
+    `prices` 에 없는 요소 = 키로 찾아 옴."""
+    detail = _text(M02 / "M02_MasterTemplete_Sangeun_Detail.ts")
+    assert "!!(doc.바탕 && doc.바탕판 && ans?.바탕판 && doc.바탕판 !== ans.바탕판)" in detail
+    assert detail.count("const revised = revisedBase();") == 2
+    modal = _text(M02 / "M02_MasterTemplete_Labor_RowModal.ts")
+    assert modal.index("saveAsSk(row") < modal.index("dispatchEvent(new Event(HOPYO_BUILT))")
+    lab = _text(ROOT / "M01_MasterData" / "M01_MasterData_UI_LogicLab_Modal.ts")
+    assert "lookup(element, element)" in lab and "Pill_NoValue" in lab