diff --git a/apps/sn/src/features/obsltPpl/ui/ObsltPplFormPage.tsx b/apps/sn/src/features/obsltPpl/ui/ObsltPplFormPage.tsx
index 253ae2831..4c03555d5 100644
--- a/apps/sn/src/features/obsltPpl/ui/ObsltPplFormPage.tsx
+++ b/apps/sn/src/features/obsltPpl/ui/ObsltPplFormPage.tsx
@@ -43,6 +43,10 @@ type FormKey = keyof ObsltPplBusinessSaveRequest;
 type FormState = Record<FormKey, string>;
 type FieldErrorKey = FormKey | "region";
 const REGION_FORM_KEYS: FormKey[] = ["sggCd", "ctpvNm", "sigunNm"];
+const BIZ_SE_OPTIONS = [
+  { text: "정밀조사", val: "정밀조사" },
+  { text: "정비사업", val: "정비사업" },
+];
 
 /** 등록·수정 표에서 필드 순서, 라벨, 입력 종류와 필수 여부를 한 곳에서 관리한다. */
 const FIELDS: Array<{
@@ -66,11 +70,11 @@ const FIELDS: Array<{
   { key: "evdncDcmntSbmsnStts", label: "증빙서류 제출여부" },
   { key: "bgngYmd", label: "착수(착공) 예정일자", placeholder: "YYYY-MM-DD" },
   { key: "cmcnYmd", label: "준공(예정)일자", placeholder: "YYYY-MM-DD" },
-  { key: "bizPrplDlyRsnCn", label: "사업추진 부진사유", type: "textarea" },
+  { key: "bizPrplDlyRsnCn", label: "사업추진 부진사유" },
   { key: "bizPicNm", label: "담당자 이름" },
   { key: "bizPicCnpl", label: "담당자 연락처" },
-  { key: "rmrkCn", label: "비고", type: "textarea" },
-  { key: "pbcpOpnnCn", label: "공단의견", type: "textarea" },
+  { key: "rmrkCn", label: "비고", },
+  { key: "pbcpOpnnCn", label: "공단의견", },
 ];
 
 const NUMBER_KEYS = new Set<FormKey>([
@@ -292,7 +296,7 @@ export function ObsltPplFormPage({ id }: { id?: string }) {
                     label="시도"
                     className=""
                     labelClass="w-16 whitespace-nowrap text-[1.3rem] text-gray-600"
-                    selectClass="w-[180px] rounded-lg bg-white"
+                    selectClass="h-11 w-[180px] rounded-lg bg-white"
                     selectArray={ctpvOptions}
                     value={ctpvCd}
                     onSelectValue={(value) => {
@@ -315,7 +319,7 @@ export function ObsltPplFormPage({ id }: { id?: string }) {
                     label="시군구"
                     className=""
                     labelClass="w-20 whitespace-nowrap text-[1.3rem] text-gray-600"
-                    selectClass="w-[220px] rounded-lg bg-white"
+                    selectClass="h-11 w-[220px] rounded-lg bg-white"
                     selectArray={representativeSggOptions}
                     value={sggCd}
                     onSelectValue={(value) => {
@@ -347,17 +351,16 @@ export function ObsltPplFormPage({ id }: { id?: string }) {
                 </TableHead>
                 <TableCell className="border">
                   {field.key === "bizSe" ? (
-                    <select
-                      className="h-11 w-full rounded border bg-white px-3 text-[1.3rem]"
+                    <SelectBox
+                      className=""
+                      selectClass="h-11 rounded-lg bg-white"
+                      selectArray={BIZ_SE_OPTIONS}
                       value={form.bizSe}
-                      onChange={(e) => {
+                      onSelectValue={(value) => {
                         clearFieldError("bizSe");
-                        setForm({ ...form, bizSe: e.target.value });
+                        setForm({ ...form, bizSe: String(value) });
                       }}
-                    >
-                      <option value="정밀조사">정밀조사</option>
-                      <option value="정비사업">정비사업</option>
-                    </select>
+                    />
                   ) : field.type === "textarea" ? (
                     <textarea
                       className="min-h-24 w-full rounded border bg-white p-3 text-[1.3rem]"