diff --git a/app/src/components/layout/sidebarLeft/Outline.tsx b/app/src/components/layout/sidebarLeft/Outline.tsx
index 3fbede7..c459925 100644
--- a/app/src/components/layout/sidebarLeft/Outline.tsx
+++ b/app/src/components/layout/sidebarLeft/Outline.tsx
@@ -1,23 +1,62 @@
-import React, { useState } from "react";
+import React, { useState, useEffect } from "react";
 import Search from "../../ui/inputs/Search";
 import DropDownList from "../../ui/list/DropDownList";
+import { useSceneContext } from "../../../modules/scene/sceneContext";
+import { isPointInsidePolygon } from "../../../functions/isPointInsidePolygon";
+
+interface ZoneData {
+  id: string;
+  name: string;
+  assets: { id: string; name: string; position?: []; rotation?: {} }[];
+}
 
 const Outline: React.FC = () => {
   const [searchValue, setSearchValue] = useState<string>("");
+  const [zoneDataList, setZoneDataList] = useState<ZoneData[]>([]);
+  const [buildingsList, setBuildingsList] = useState<{ id: string; name: string }[]>([]);
+  const [isLayersOpen, setIsLayersOpen] = useState(true);
+  const [isBuildingsOpen, setIsBuildingsOpen] = useState(false);
+  const [isZonesOpen, setIsZonesOpen] = useState(false);
+  const { assetStore, zoneStore } = useSceneContext();
+  const { assets } = assetStore();
+  const { zones } = zoneStore();
+
+
+  useEffect(() => {
+    const updatedZoneList: ZoneData[] = zones?.map((zone: any) => {
+      const polygon2D = zone.points.map((p: [number, number, number]) => [p[0], p[2],]);
+
+      const assetsInZone = assets.filter((item: any) => {
+          const [x, , z] = item.position;
+          return isPointInsidePolygon([x, z], polygon2D as [number, number][]);
+        })
+        .map((item: any) => ({
+          id: item.modelUuid,
+          name: item.modelName,
+          position: item.position,
+          rotation: item.rotation,
+        }));
+
+      return {
+        id: zone.zoneUuid,
+        name: zone.zoneName,
+        assets: assetsInZone,
+      };
+    });
+
+    setZoneDataList(updatedZoneList);
+  }, [zones, assets]);
 
   const handleSearchChange = (value: string) => {
     setSearchValue(value);
-    // console.log(value); // Log the search value if needed
   };
 
-  const dropdownItems = [
-    { id: "1", name: "Ground Floor", active: true },
-    // { id: "2", name: "Floor 1" },
-  ]; // Example dropdown items
+  const dropdownItems = [{ id: "1", name: "Ground Floor" }];
 
   return (
     <div className="outline-container">
       <Search onChange={handleSearchChange} />
+
       {searchValue ? (
         <div className="searched-content">
           <p>Results for "{searchValue}"</p>
@@ -28,7 +67,8 @@ const Outline: React.FC = () => {
             <DropDownList
               value="Layers"
               items={dropdownItems}
-              defaultOpen={true}
+              isOpen={isLayersOpen}
+              onToggle={() => setIsLayersOpen((prev) => !prev)}
               showKebabMenu={false}
               showFocusIcon={true}
               remove
@@ -36,10 +76,18 @@ const Outline: React.FC = () => {
           </section>
           <section className="outline-section overflow">
             <DropDownList
-              value="Scene"
-              items={dropdownItems}
-              defaultOpen={true}
-              listType="outline"
+              value="Buildings"
+              items={buildingsList}
+              isOpen={isBuildingsOpen}
+              onToggle={() => setIsBuildingsOpen((prev) => !prev)}
+              showKebabMenu={false}
+              showAddIcon={false}
+            />
+            <DropDownList
+              value="Zones"
+              items={zoneDataList}
+              isOpen={isZonesOpen}
+              onToggle={() => setIsZonesOpen((prev) => !prev)}
               showKebabMenu={false}
               showAddIcon={false}
             />
diff --git a/app/src/components/ui/list/DropDownList.tsx b/app/src/components/ui/list/DropDownList.tsx
index b158c80..bbf386d 100644
--- a/app/src/components/ui/list/DropDownList.tsx
+++ b/app/src/components/ui/list/DropDownList.tsx
@@ -1,30 +1,18 @@
-import React, { useEffect, useState } from "react";
+import React from "react";
 import List from "./List";
 import { AddIcon, ArrowIcon, FocusIcon } from "../../icons/ExportCommonIcons";
 import KebabMenuListMultiSelect from "./KebebMenuListMultiSelect";
-import { useSceneContext } from "../../../modules/scene/sceneContext";
 
 interface DropDownListProps {
-  value?: string; // Value to display in the DropDownList
-  items?: { id: string; name: string }[]; // Items to display in the dropdown list
-  showFocusIcon?: boolean; // Determines if the FocusIcon should be displayed
-  showAddIcon?: boolean; // Determines if the AddIcon should be displayed
-  showKebabMenu?: boolean; // Determines if the KebabMenuList should be displayed
-  kebabMenuItems?: { id: string; name: string }[]; // Items for the KebabMenuList
-  defaultOpen?: boolean; // Determines if the dropdown list should be open by default
-  listType?: string; // Type of list to display
+  value?: string;
+  items?: { id: string; name: string }[];
+  showFocusIcon?: boolean;
+  showAddIcon?: boolean;
+  showKebabMenu?: boolean;
+  kebabMenuItems?: { id: string; name: string }[];
   remove?: boolean;
-}
-
-interface Zone {
-  zoneUuid: string;
-  zoneName: string;
-  points: [number, number, number][]; // polygon vertices
-}
-interface ZoneData {
-  id: string;
-  name: string;
-  assets: { id: string; name: string; position?: []; rotation?: {} }[];
+  isOpen: boolean;
+  onToggle: () => void;
 }
 
 const DropDownList: React.FC<DropDownListProps> = ({
@@ -38,76 +26,13 @@ const DropDownList: React.FC<DropDownListProps> = ({
     { id: "Paths", name: "Paths" },
     { id: "Zones", name: "Zones" },
   ],
-  defaultOpen = false,
-  listType = "default",
   remove,
+  isOpen,
+  onToggle,
 }) => {
-  const [isOpen, setIsOpen] = useState<boolean>(defaultOpen);
-
-  const handleToggle = () => {
-    setIsOpen((prev) => !prev); // Toggle the state
-  };
-
-  const [zoneDataList, setZoneDataList] = useState<ZoneData[]>([]);
-  const { assetStore, zoneStore } = useSceneContext();
-  const { assets } = assetStore();
-  const { zones } = zoneStore()
-
-
-  const isPointInsidePolygon = (
-    point: [number, number],
-    polygon: [number, number][]
-  ) => {
-    let inside = false;
-    for (let i = 0, j = polygon.length - 1; i < polygon.length; j = i++) {
-      const xi = polygon[i][0],
-        zi = polygon[i][1];
-      const xj = polygon[j][0],
-        zj = polygon[j][1];
-
-      const intersect =
-        // eslint-disable-next-line no-mixed-operators
-        zi > point[1] !== zj > point[1] &&
-        point[0] < ((xj - xi) * (point[1] - zi)) / (zj - zi + 0.000001) + xi;
-
-      if (intersect) inside = !inside;
-    }
-    return inside;
-  };
-
-  useEffect(() => {
-    const updatedZoneList: ZoneData[] = zones?.map((zone: any) => {
-      const polygon2D = zone.points.map((p: [number, number, number]) => [
-        p[0],
-        p[2],
-      ]);
-
-      const assetsInZone = assets
-        .filter((item: any) => {
-          const [x, , z] = item.position;
-          return isPointInsidePolygon([x, z], polygon2D as [number, number][]);
-        })
-        .map((item: any) => ({
-          id: item.modelUuid,
-          name: item.modelName,
-          position: item.position,
-          rotation: item.rotation,
-        }));
-
-      return {
-        id: zone.zoneUuid,
-        name: zone.zoneName,
-        assets: assetsInZone,
-      };
-    });
-
-    setZoneDataList(updatedZoneList);
-  }, [zones, assets]);
-
   return (
     <div className="dropdown-list-container">
-      {/* eslint-disable-next-line */}
-      <div className="head" onClick={handleToggle}>
+      <div className="head" onClick={onToggle}>
         <div className="value">{value}</div>
         <div className="options">
           {showFocusIcon && (
@@ -130,31 +55,15 @@ const DropDownList: React.FC<DropDownListProps> = ({
             title="collapse-btn"
             className="collapse-icon option"
             style={{ transform: isOpen ? "rotate(0deg)" : "rotate(-90deg)" }}
-          // onClick={handleToggle}
           >
             <ArrowIcon />
           </button>
         </div>
       </div>
+
       {isOpen && (
         <div className="lists-container">
-          {listType === "default" && <List items={items} remove={remove} />}
-          {listType === "outline" && (
-            <>
-              <DropDownList
-                value="Buildings"
-                showKebabMenu={false}
-                showAddIcon={false}
-              // items={zoneDataList}
-              />
-              <DropDownList
-                value="Zones"
-                showKebabMenu={false}
-                showAddIcon={false}
-                items={zoneDataList}
-              />
-            </>
-          )}
+          <List items={items} remove={remove} />
         </div>
       )}
     </div>
diff --git a/app/src/functions/isPointInsidePolygon.ts b/app/src/functions/isPointInsidePolygon.ts
new file mode 100644
index 0000000..7fa1846
--- /dev/null
+++ b/app/src/functions/isPointInsidePolygon.ts
@@ -0,0 +1,20 @@
+export const isPointInsidePolygon = (
+    point: [number, number],
+    polygon: [number, number][]
+) => {
+    let inside = false;
+    for (let i = 0, j = polygon.length - 1; i < polygon.length; j = i++) {
+        const xi = polygon[i][0],
+            zi = polygon[i][1];
+        const xj = polygon[j][0],
+            zj = polygon[j][1];
+
+        const intersect =
+            // eslint-disable-next-line no-mixed-operators
+            zi > point[1] !== zj > point[1] &&
+            point[0] < ((xj - xi) * (point[1] - zi)) / (zj - zi + 0.000001) + xi;
+
+        if (intersect) inside = !inside;
+    }
+    return inside;
+};
\ No newline at end of file