diff --git a/apps/editor/components/ui/panels/panel-manager.tsx b/apps/editor/components/ui/panels/panel-manager.tsx
index 6697574a..d5fa0b56 100644
--- a/apps/editor/components/ui/panels/panel-manager.tsx
+++ b/apps/editor/components/ui/panels/panel-manager.tsx
@@ -8,6 +8,7 @@ import { ItemPanel } from './item-panel'
 import { ReferencePanel } from './reference-panel'
 import { RoofPanel } from './roof-panel'
 import { SlabPanel } from './slab-panel'
+import { WallPanel } from './wall-panel'
 import { WindowPanel } from './window-panel'
 
 export function PanelManager() {
@@ -34,6 +35,8 @@ export function PanelManager() {
           return <SlabPanel />
         case 'ceiling':
           return <CeilingPanel />
+        case 'wall':
+          return <WallPanel />
         case 'window':
           return <WindowPanel />
       }
diff --git a/apps/editor/components/ui/panels/wall-panel.tsx b/apps/editor/components/ui/panels/wall-panel.tsx
new file mode 100644
index 00000000..c51b937f
--- /dev/null
+++ b/apps/editor/components/ui/panels/wall-panel.tsx
@@ -0,0 +1,108 @@
+'use client'
+
+import { type AnyNode, type AnyNodeId, type WallNode, useScene } from '@pascal-app/core'
+import { useViewer } from '@pascal-app/viewer'
+import { X } from 'lucide-react'
+import Image from 'next/image'
+import { useCallback } from 'react'
+import { NumberInput } from '@/components/ui/primitives/number-input'
+
+export function WallPanel() {
+  const selectedIds = useViewer((s) => s.selection.selectedIds)
+  const setSelection = useViewer((s) => s.setSelection)
+  const nodes = useScene((s) => s.nodes)
+  const updateNode = useScene((s) => s.updateNode)
+
+  const selectedId = selectedIds[0]
+  const node = selectedId
+    ? (nodes[selectedId as AnyNode['id']] as WallNode | undefined)
+    : undefined
+
+  const handleUpdate = useCallback(
+    (updates: Partial<WallNode>) => {
+      if (!selectedId) return
+      updateNode(selectedId as AnyNode['id'], updates)
+      useScene.getState().dirtyNodes.add(selectedId as AnyNodeId)
+    },
+    [selectedId, updateNode],
+  )
+
+  const handleClose = useCallback(() => {
+    setSelection({ selectedIds: [] })
+  }, [setSelection])
+
+  if (!node || node.type !== 'wall' || selectedIds.length !== 1) return null
+
+  const dx = node.end[0] - node.start[0]
+  const dz = node.end[1] - node.start[1]
+  const length = Math.sqrt(dx * dx + dz * dz)
+
+  const height = node.height ?? 2.5
+  const thickness = node.thickness ?? 0.1
+
+  return (
+    <div className="pointer-events-auto fixed top-20 right-4 z-50 flex w-64 flex-col overflow-hidden rounded-lg border border-border bg-background/95 shadow-xl backdrop-blur-md">
+      {/* Header */}
+      <div className="flex items-center justify-between gap-2 border-b p-3">
+        <div className="flex items-center gap-2 min-w-0">
+          <Image src="/icons/wall.png" alt="" width={16} height={16} className="shrink-0 object-contain" />
+          <h2 className="font-semibold text-foreground text-sm truncate">
+            {node.name || `Wall (${length.toFixed(2)}m)`}
+          </h2>
+        </div>
+        <button
+          type="button"
+          className="shrink-0 rounded p-1 text-muted-foreground transition-colors hover:bg-accent hover:text-foreground cursor-pointer"
+          onClick={handleClose}
+        >
+          <X className="h-4 w-4" />
+        </button>
+      </div>
+
+      {/* Content */}
+      <div className="flex-1 overflow-y-auto p-3 space-y-4">
+
+        {/* Dimensions */}
+        <div className="space-y-2">
+          <label className="font-medium text-muted-foreground text-xs uppercase tracking-wide">
+            Dimensions
+          </label>
+          <div className="flex items-center gap-1.5">
+            <NumberInput
+              label="Height"
+              value={Math.round(height * 100) / 100}
+              onChange={(v) => handleUpdate({ height: Math.max(0.1, v) })}
+              min={0.1}
+              precision={2}
+              step={0.1}
+              className="flex-1"
+            />
+            <span className="text-muted-foreground text-xs shrink-0">m</span>
+          </div>
+          <div className="flex items-center gap-1.5">
+            <NumberInput
+              label="Thickness"
+              value={Math.round(thickness * 1000) / 1000}
+              onChange={(v) => handleUpdate({ thickness: Math.max(0.05, v) })}
+              min={0.05}
+              precision={3}
+              step={0.01}
+              className="flex-1"
+            />
+            <span className="text-muted-foreground text-xs shrink-0">m</span>
+          </div>
+        </div>
+
+        {/* Info */}
+        <div className="space-y-2">
+          <label className="font-medium text-muted-foreground text-xs uppercase tracking-wide">
+            Info
+          </label>
+          <div className="rounded border border-border bg-muted/50 px-3 py-2 text-sm">
+            Length: {length.toFixed(2)} m
+          </div>
+        </div>
+      </div>
+    </div>
+  )
+}
diff --git a/packages/core/src/systems/wall/wall-system.tsx b/packages/core/src/systems/wall/wall-system.tsx
index 31208a1c..13589518 100644
--- a/packages/core/src/systems/wall/wall-system.tsx
+++ b/packages/core/src/systems/wall/wall-system.tsx
@@ -132,7 +132,7 @@ function updateWallGeometry(wallId: string, miterData: WallMiterData) {
     collisionMesh.geometry = collisionGeo
   }
 
-  mesh.position.set(node.start[0], 0, node.start[1])
+  mesh.position.set(node.start[0], slabElevation, node.start[1])
   const angle = Math.atan2(node.end[1] - node.start[1], node.end[0] - node.start[0])
   mesh.rotation.y = -angle
 }
@@ -153,8 +153,10 @@ export function generateExtrudedWall(
 
   const wallStart: Point2D = { x: wallNode.start[0], y: wallNode.start[1] }
   const wallEnd: Point2D = { x: wallNode.end[0], y: wallNode.end[1] }
-  // Wall height is adjusted by slab elevation (positive reduces, negative increases)
-  const height = (wallNode.height ?? 2.5) - slabElevation
+  // Positive slab: shift the whole wall up (full height preserved)
+  // Negative slab: extend wall downward so top stays fixed at wallNode.height
+  const wallHeight = wallNode.height ?? 2.5
+  const height = slabElevation > 0 ? wallHeight : wallHeight - slabElevation
 
   const thickness = wallNode.thickness ?? 0.1
   const halfT = thickness / 2
@@ -248,10 +250,6 @@ export function generateExtrudedWall(
 
   // Rotate so extrusion direction (Z) becomes height direction (Y)
   geometry.rotateX(-Math.PI / 2)
-  // Translate by slab elevation (works for both positive and negative values)
-  if (slabElevation !== 0) {
-    geometry.translate(0, slabElevation, 0)
-  }
   geometry.computeVertexNormals()
 
   // Apply CSG subtraction for cutouts (doors/windows)