diff --git a/Z01_MasterData/Z01_MasterData_Api_Fetch.ts b/Z01_MasterData/Z01_MasterData_Api_Fetch.ts
index 7d881ee6..7a76b9e7 100644
--- a/Z01_MasterData/Z01_MasterData_Api_Fetch.ts
+++ b/Z01_MasterData/Z01_MasterData_Api_Fetch.ts
@@ -47,9 +47,26 @@ export interface RowsQuery {
   sort?: SortOrder | null;
 }
 
-/** 기초단가 다섯 — 고친 값은 원본이 아니라 덮개 파일에 쌓임(품셈이 갱신돼도 안 날아감). */
+/**
+ * ① 기초단가 다섯 — 얼마인가. 시장이 정하고 주간~반기로 바뀜.
+ * 고친 값은 원본이 아니라 덮개 파일에 쌓임(품셈이 갱신돼도 안 날아감).
+ */
 export const BASE_PRICE_KINDS = ["labor", "machine", "material", "oil", "rate"] as const;
-export type BasePriceKind = (typeof BASE_PRICE_KINDS)[number];
+
+/** ② 품셈 기준 아홉 — 얼마나 드나. 품셈이 정하고 해마다 한 번 개정(2026-09-16 사용자 ①②). */
+export const SPEC_KINDS = [
+  "coef",
+  "material_surcharge",
+  "formwork_reuse",
+  "rebar_complexity",
+  "timber_structure_class",
+  "masonry_slope",
+  "masonry_back_length",
+  "stone_kind",
+  "masonry_class",
+] as const;
+
+export type BasePriceKind = (typeof BASE_PRICE_KINDS)[number] | (typeof SPEC_KINDS)[number];
 
 async function request<T>(path: string, init: RequestInit = {}): Promise<T> {
   const response = await fetch(`${API_BASE_URL}${path}`, {
diff --git a/Z01_MasterData/Z01_MasterData_UI_Side.ts b/Z01_MasterData/Z01_MasterData_UI_Side.ts
index c50d6fed..a0fb7fee 100644
--- a/Z01_MasterData/Z01_MasterData_UI_Side.ts
+++ b/Z01_MasterData/Z01_MasterData_UI_Side.ts
@@ -15,9 +15,11 @@ import {
   fetchMasterRows,
   fetchOverrides,
   type MasterGroup,
+  type BasePriceKind,
   type MasterRows,
   type RowsQuery,
   saveBasePrice,
+  SPEC_KINDS,
   VALUES_TABLE_ID,
 } from "./Z01_MasterData_Api_Fetch";
 import { valueWithUnit, type OverrideState } from "./Z01_MasterData_UI_Cells";
@@ -31,25 +33,32 @@ export function buildSidePanel(groups: MasterGroup[], view: RowsView): HTMLEleme
   };
 
   const baseTitle = L("Z01_MasterData_BasePrices");
-  const baseGrid = el("div", { className: "z01-master__base-grid" });
-  for (const kind of BASE_PRICE_KINDS) {
-    const label = L(`Z01_MasterData_Base_${kind}` as const);
-    const button = el("button", {
-      className: "z01-master__base",
-      attrs: { type: "button" },
-      text: label,
-    });
-    button.addEventListener("click", () => {
-      activate(button);
-      view.show({
-        title: `${baseTitle} › ${label}`,
-        key: `base-prices/${kind}`,
-        load: (query) => fetchBasePrices(kind, query),
-        save: (rowId, values) => saveBasePrice(kind, rowId, values),
+  const specTitle = L("Z01_MasterData_SpecValues");
+  /** 한 상자 몫 단추들 — ①얼마인가 ②얼마나 드나 로 갈라 세움(성격도 갱신 주기도 다름). */
+  const kindGrid = (boxTitle: string, kinds: readonly BasePriceKind[]): HTMLElement => {
+    const grid = el("div", { className: "z01-master__base-grid" });
+    for (const kind of kinds) {
+      const label = L(`Z01_MasterData_Base_${kind}` as const);
+      const button = el("button", {
+        className: "z01-master__base",
+        attrs: { type: "button" },
+        text: label,
       });
-    });
-    baseGrid.append(button);
-  }
+      button.addEventListener("click", () => {
+        activate(button);
+        view.show({
+          title: `${boxTitle} › ${label}`,
+          key: `base-prices/${kind}`,
+          load: (query) => fetchBasePrices(kind, query),
+          save: (rowId, values) => saveBasePrice(kind, rowId, values),
+        });
+      });
+      grid.append(button);
+    }
+    return grid;
+  };
+  const baseGrid = kindGrid(baseTitle, BASE_PRICE_KINDS);
+  const specGrid = kindGrid(specTitle, SPEC_KINDS);
   const overridesButton = el("button", {
     className: "z01-master__base z01-master__base--wide",
     attrs: { type: "button" },
@@ -113,7 +122,11 @@ export function buildSidePanel(groups: MasterGroup[], view: RowsView): HTMLEleme
     tree.append(groupBox);
   }
 
-  panel.append(section(baseTitle, baseGrid), section(L("Z01_MasterData_Tree"), tree));
+  panel.append(
+    section(baseTitle, baseGrid),
+    section(specTitle, specGrid),
+    section(L("Z01_MasterData_Tree"), tree),
+  );
   attachCollapsible(panel);
   return panel;
 }
diff --git a/ui_template/ui_template_locale_b3.ts b/ui_template/ui_template_locale_b3.ts
index 662fc14c..866bf245 100644
--- a/ui_template/ui_template_locale_b3.ts
+++ b/ui_template/ui_template_locale_b3.ts
@@ -147,6 +147,17 @@ export const ui_locales_b3 = {
   Z01_MasterData_Base_material: ["자재단가", "Material"],
   Z01_MasterData_Base_oil: ["유가", "Fuel"],
   Z01_MasterData_Base_rate: ["요율", "Rates"],
+  /* ② 품셈 기준 아홉 — 얼마나 드나(품셈이 정하고 해마다 한 번 개정) */
+  Z01_MasterData_SpecValues: ["품셈 기준", "Standard rates"],
+  Z01_MasterData_Base_coef: ["토량환산", "Soil conversion"],
+  Z01_MasterData_Base_material_surcharge: ["자재할증", "Material surcharge"],
+  Z01_MasterData_Base_formwork_reuse: ["거푸집", "Formwork reuse"],
+  Z01_MasterData_Base_rebar_complexity: ["철근", "Rebar"],
+  Z01_MasterData_Base_timber_structure_class: ["목구조", "Timber structure"],
+  Z01_MasterData_Base_masonry_slope: ["돌쌓기 경사", "Masonry slope"],
+  Z01_MasterData_Base_masonry_back_length: ["뒷길이", "Back length"],
+  Z01_MasterData_Base_stone_kind: ["돌종류", "Stone kind"],
+  Z01_MasterData_Base_masonry_class: ["갈래", "Masonry class"],
   Z01_MasterData_Overrides: ["고친 것 모아 보기", "Edited values"],
   Z01_MasterData_Edit_Can: [
     "고칠 수 있는 칸 — 눌러 고치고 Enter 로 저장 (Esc 취소)",