diff --git a/change/@react-native-windows-codegen-fc9a80b3-b16a-458c-b6e9-230a3d4f14f2.json b/change/@react-native-windows-codegen-fc9a80b3-b16a-458c-b6e9-230a3d4f14f2.json
new file mode 100644
index 00000000000..a9cde0171dd
--- /dev/null
+++ b/change/@react-native-windows-codegen-fc9a80b3-b16a-458c-b6e9-230a3d4f14f2.json
@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Add ability to override UpdateLayoutMetrics and VisualToMountChildrenInto",
+  "packageName": "@react-native-windows/codegen",
+  "email": "30809111+acoates-ms@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}
diff --git a/change/react-native-windows-2e9f4c25-c40a-4434-9c2c-0d6672969f47.json b/change/react-native-windows-2e9f4c25-c40a-4434-9c2c-0d6672969f47.json
new file mode 100644
index 00000000000..a5ff2420272
--- /dev/null
+++ b/change/react-native-windows-2e9f4c25-c40a-4434-9c2c-0d6672969f47.json
@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Add ability to override UpdateLayoutMetrics and VisualToMountChildrenInto",
+  "packageName": "react-native-windows",
+  "email": "30809111+acoates-ms@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/@react-native-windows/codegen/src/generators/GenerateComponentWindows.ts b/packages/@react-native-windows/codegen/src/generators/GenerateComponentWindows.ts
index 956125944cb..60e750a4fb8 100644
--- a/packages/@react-native-windows/codegen/src/generators/GenerateComponentWindows.ts
+++ b/packages/@react-native-windows/codegen/src/generators/GenerateComponentWindows.ts
@@ -29,6 +29,7 @@ type FilesOutput = Map<string, string>;
 const headerTemplate = `/*
  * This file is auto-generated from ::_COMPONENT_NAME_::NativeComponent spec file in flow / TypeScript.
  */
+// clang-format off
 #pragma once
 
 #include <NativeModules.h>
@@ -99,6 +100,13 @@ struct Base::_COMPONENT_NAME_:: {
     m_props = newProps;
   }
 
+  // UpdateLayoutMetrics will only be called if this method is overridden
+  virtual void UpdateLayoutMetrics(
+    const winrt::Microsoft::ReactNative::ComponentView &/*view*/,
+    const winrt::Microsoft::ReactNative::LayoutMetrics &/*newLayoutMetrics*/,
+    const winrt::Microsoft::ReactNative::LayoutMetrics &/*oldLayoutMetrics*/) noexcept {
+  }
+
   // UpdateState will only be called if this method is overridden
   virtual void UpdateState(
     const winrt::Microsoft::ReactNative::ComponentView &/*view*/,
@@ -167,6 +175,13 @@ void Register::_COMPONENT_NAME_::NativeComponent(
             userData->UpdateProps(view, newProps ? newProps.as<::_COMPONENT_NAME_::Props>() : nullptr, oldProps ? oldProps.as<::_COMPONENT_NAME_::Props>() : nullptr);
         });
 
+        compBuilder.SetUpdateLayoutMetricsHandler([](const winrt::Microsoft::ReactNative::ComponentView &view,
+                                      const winrt::Microsoft::ReactNative::LayoutMetrics &newLayoutMetrics,
+                                      const winrt::Microsoft::ReactNative::LayoutMetrics &oldLayoutMetrics) noexcept {
+            auto userData = view.UserData().as<TUserData>();
+            userData->UpdateLayoutMetrics(view, newLayoutMetrics, oldLayoutMetrics);
+        });
+
         builder.SetUpdateEventEmitterHandler([](const winrt::Microsoft::ReactNative::ComponentView &view,
                                      const winrt::Microsoft::ReactNative::EventEmitter &eventEmitter) noexcept {
           auto userData = view.UserData().as<TUserData>();
diff --git a/packages/sample-custom-component/windows/SampleCustomComponent/codegen/react/components/SampleCustomComponent/DrawingIsland.g.h b/packages/sample-custom-component/windows/SampleCustomComponent/codegen/react/components/SampleCustomComponent/DrawingIsland.g.h
index 45ec6c970b6..abda2cdd76a 100644
--- a/packages/sample-custom-component/windows/SampleCustomComponent/codegen/react/components/SampleCustomComponent/DrawingIsland.g.h
+++ b/packages/sample-custom-component/windows/SampleCustomComponent/codegen/react/components/SampleCustomComponent/DrawingIsland.g.h
@@ -2,6 +2,7 @@
 /*
  * This file is auto-generated from DrawingIslandNativeComponent spec file in flow / TypeScript.
  */
+// clang-format off
 #pragma once
 
 #include <NativeModules.h>
@@ -53,6 +54,13 @@ struct BaseDrawingIsland {
     m_props = newProps;
   }
 
+  // UpdateLayoutMetrics will only be called if this method is overridden
+  virtual void UpdateLayoutMetrics(
+    const winrt::Microsoft::ReactNative::ComponentView &/*view*/,
+    const winrt::Microsoft::ReactNative::LayoutMetrics &/*newLayoutMetrics*/,
+    const winrt::Microsoft::ReactNative::LayoutMetrics &/*oldLayoutMetrics*/) noexcept {
+  }
+
   // UpdateState will only be called if this method is overridden
   virtual void UpdateState(
     const winrt::Microsoft::ReactNative::ComponentView &/*view*/,
@@ -117,6 +125,13 @@ void RegisterDrawingIslandNativeComponent(
             userData->UpdateProps(view, newProps ? newProps.as<DrawingIslandProps>() : nullptr, oldProps ? oldProps.as<DrawingIslandProps>() : nullptr);
         });
 
+        compBuilder.SetUpdateLayoutMetricsHandler([](const winrt::Microsoft::ReactNative::ComponentView &view,
+                                      const winrt::Microsoft::ReactNative::LayoutMetrics &newLayoutMetrics,
+                                      const winrt::Microsoft::ReactNative::LayoutMetrics &oldLayoutMetrics) noexcept {
+            auto userData = view.UserData().as<TUserData>();
+            userData->UpdateLayoutMetrics(view, newLayoutMetrics, oldLayoutMetrics);
+        });
+
         builder.SetUpdateEventEmitterHandler([](const winrt::Microsoft::ReactNative::ComponentView &view,
                                      const winrt::Microsoft::ReactNative::EventEmitter &eventEmitter) noexcept {
           auto userData = view.UserData().as<TUserData>();
diff --git a/packages/sample-custom-component/windows/SampleCustomComponent/codegen/react/components/SampleCustomComponent/MovingLight.g.h b/packages/sample-custom-component/windows/SampleCustomComponent/codegen/react/components/SampleCustomComponent/MovingLight.g.h
index 940b2d5476b..d71058de9a0 100644
--- a/packages/sample-custom-component/windows/SampleCustomComponent/codegen/react/components/SampleCustomComponent/MovingLight.g.h
+++ b/packages/sample-custom-component/windows/SampleCustomComponent/codegen/react/components/SampleCustomComponent/MovingLight.g.h
@@ -2,6 +2,7 @@
 /*
  * This file is auto-generated from MovingLightNativeComponent spec file in flow / TypeScript.
  */
+// clang-format off
 #pragma once
 
 #include <NativeModules.h>
@@ -94,6 +95,13 @@ struct BaseMovingLight {
     m_props = newProps;
   }
 
+  // UpdateLayoutMetrics will only be called if this method is overridden
+  virtual void UpdateLayoutMetrics(
+    const winrt::Microsoft::ReactNative::ComponentView &/*view*/,
+    const winrt::Microsoft::ReactNative::LayoutMetrics &/*newLayoutMetrics*/,
+    const winrt::Microsoft::ReactNative::LayoutMetrics &/*oldLayoutMetrics*/) noexcept {
+  }
+
   // UpdateState will only be called if this method is overridden
   virtual void UpdateState(
     const winrt::Microsoft::ReactNative::ComponentView &/*view*/,
@@ -170,6 +178,13 @@ void RegisterMovingLightNativeComponent(
             userData->UpdateProps(view, newProps ? newProps.as<MovingLightProps>() : nullptr, oldProps ? oldProps.as<MovingLightProps>() : nullptr);
         });
 
+        compBuilder.SetUpdateLayoutMetricsHandler([](const winrt::Microsoft::ReactNative::ComponentView &view,
+                                      const winrt::Microsoft::ReactNative::LayoutMetrics &newLayoutMetrics,
+                                      const winrt::Microsoft::ReactNative::LayoutMetrics &oldLayoutMetrics) noexcept {
+            auto userData = view.UserData().as<TUserData>();
+            userData->UpdateLayoutMetrics(view, newLayoutMetrics, oldLayoutMetrics);
+        });
+
         builder.SetUpdateEventEmitterHandler([](const winrt::Microsoft::ReactNative::ComponentView &view,
                                      const winrt::Microsoft::ReactNative::EventEmitter &eventEmitter) noexcept {
           auto userData = view.UserData().as<TUserData>();
diff --git a/vnext/Microsoft.ReactNative/Fabric/ComponentView.cpp b/vnext/Microsoft.ReactNative/Fabric/ComponentView.cpp
index d5ee055cb54..c7cad679f72 100644
--- a/vnext/Microsoft.ReactNative/Fabric/ComponentView.cpp
+++ b/vnext/Microsoft.ReactNative/Fabric/ComponentView.cpp
@@ -22,11 +22,12 @@ struct RootComponentView;
 
 namespace winrt::Microsoft::ReactNative::implementation {
 
-ComponentView::ComponentView(facebook::react::Tag tag, winrt::Microsoft::ReactNative::ReactContext const &reactContext)
-    : m_tag(tag), m_reactContext(reactContext) {}
-
-void ComponentView::MarkAsCustomComponent() noexcept {
-  m_customComponent = true;
+ComponentView::ComponentView(
+    facebook::react::Tag tag,
+    winrt::Microsoft::ReactNative::ReactContext const &reactContext,
+    winrt::Microsoft::ReactNative::Composition::ReactCompositionViewComponentBuilder *builder)
+    : m_tag(tag), m_reactContext(reactContext) {
+  m_builder.copy_from(builder);
 }
 
 std::vector<facebook::react::ComponentDescriptorProvider>
@@ -52,18 +53,15 @@ void ComponentView::MountChildComponentView(
     uint32_t index) noexcept {
   m_children.InsertAt(index, childComponentView);
   winrt::get_self<winrt::Microsoft::ReactNative::implementation::ComponentView>(childComponentView)->parent(*this);
-  if (m_mountChildComponentViewHandler) {
-    m_mountChildComponentViewHandler(*this, winrt::make<MountChildComponentViewArgs>(childComponentView, index));
+  if (m_builder && m_builder->MountChildComponentViewHandler()) {
+    m_builder->MountChildComponentViewHandler()(
+        *this, winrt::make<MountChildComponentViewArgs>(childComponentView, index));
   }
   if (m_mounted) {
     winrt::get_self<winrt::Microsoft::ReactNative::implementation::ComponentView>(childComponentView)->onMounted();
   }
 }
 
-void ComponentView::MountChildComponentViewHandler(const MountChildComponentViewDelegate &handler) noexcept {
-  m_mountChildComponentViewHandler = handler;
-}
-
 void ComponentView::onMounted() noexcept {
   assert(!m_mounted);
   m_mounted = true;
@@ -89,16 +87,14 @@ void ComponentView::Mounted(winrt::event_token const &token) noexcept {
 void ComponentView::UnmountChildComponentView(
     const winrt::Microsoft::ReactNative::ComponentView &childComponentView,
     uint32_t index) noexcept {
-  if (m_mountChildComponentViewHandler) {
-    m_mountChildComponentViewHandler(*this, winrt::make<MountChildComponentViewArgs>(childComponentView, index));
+  if (m_builder && m_builder->UnmountChildComponentViewHandler()) {
+    m_builder->UnmountChildComponentViewHandler()(
+        *this, winrt::make<UnmountChildComponentViewArgs>(childComponentView, index));
   }
   m_children.RemoveAt(index);
   winrt::get_self<winrt::Microsoft::ReactNative::implementation::ComponentView>(childComponentView)->parent(nullptr);
   winrt::get_self<winrt::Microsoft::ReactNative::implementation::ComponentView>(childComponentView)->onUnmounted();
 }
-void ComponentView::UnmountChildComponentViewHandler(const UnmountChildComponentViewDelegate &handler) noexcept {
-  m_unmountChildComponentViewHandler = handler;
-}
 
 void ComponentView::onUnmounted() noexcept {
   if (!m_mounted)
@@ -148,15 +144,11 @@ uint32_t UnmountChildComponentViewArgs::Index() const noexcept {
 void ComponentView::updateProps(
     facebook::react::Props::Shared const &props,
     facebook::react::Props::Shared const &oldProps) noexcept {
-  if (m_updatePropsDelegate) {
-    m_updatePropsDelegate(*this, userProps(props), oldProps ? userProps(oldProps) : nullptr);
+  if (m_builder && m_builder->UpdatePropsHandler()) {
+    m_builder->UpdatePropsHandler()(*this, userProps(props), oldProps ? userProps(oldProps) : nullptr);
   }
 }
 
-void ComponentView::UpdatePropsHandler(const UpdatePropsDelegate &handler) noexcept {
-  m_updatePropsDelegate = handler;
-}
-
 const winrt::Microsoft::ReactNative::IComponentProps ComponentView::userProps(
     facebook::react::Props::Shared const &props) noexcept {
   const auto &abiProps =
@@ -165,28 +157,20 @@ const winrt::Microsoft::ReactNative::IComponentProps ComponentView::userProps(
 }
 
 void ComponentView::updateEventEmitter(facebook::react::EventEmitter::Shared const &eventEmitter) noexcept {
-  if (m_updateEventEmitterHandler) {
-    m_updateEventEmitterHandler(*this, winrt::make<EventEmitter>(eventEmitter));
+  if (m_builder && m_builder->UpdateEventEmitterHandler()) {
+    m_builder->UpdateEventEmitterHandler()(*this, winrt::make<EventEmitter>(eventEmitter));
   }
 }
 
-void ComponentView::UpdateEventEmitterHandler(const UpdateEventEmitterDelegate &handler) noexcept {
-  m_updateEventEmitterHandler = handler;
-}
-
 void ComponentView::updateState(
     facebook::react::State::Shared const &state,
     facebook::react::State::Shared const &oldState) noexcept {
   // Avoid new-ing up a new AbiComponentState on every state change if we are not a custom component
-  if (m_updateStateDelegate) {
-    m_updateStateDelegate(*this, winrt::make<::Microsoft::ReactNative::AbiComponentState>(state));
+  if (m_builder && m_builder->UpdateStateHandler()) {
+    m_builder->UpdateStateHandler()(*this, winrt::make<::Microsoft::ReactNative::AbiComponentState>(state));
   }
 }
 
-void ComponentView::UpdateStateHandler(const UpdateStateDelegate &handler) noexcept {
-  m_updateStateDelegate = handler;
-}
-
 LayoutMetricsChangedArgs::LayoutMetricsChangedArgs(
     const winrt::Microsoft::ReactNative::LayoutMetrics &newLayoutMetrics,
     const winrt::Microsoft::ReactNative::LayoutMetrics &oldLayoutMetrics)
@@ -216,6 +200,10 @@ void ComponentView::updateLayoutMetrics(
        layoutMetrics.frame.size.height},
       layoutMetrics.pointScaleFactor};
 
+  if (m_builder && m_builder->UpdateLayoutMetricsHandler()) {
+    m_builder->UpdateLayoutMetricsHandler()(*this, newMetrics, oldMetrics);
+  }
+
   m_layoutMetrics = layoutMetrics;
 
   m_layoutMetricsChangedEvent(*this, winrt::make<LayoutMetricsChangedArgs>(newMetrics, oldMetrics));
@@ -240,13 +228,9 @@ void ComponentView::LayoutMetricsChanged(winrt::event_token const &token) noexce
   m_layoutMetricsChangedEvent.remove(token);
 }
 
-void ComponentView::FinalizeUpdateHandler(const UpdateFinalizerDelegate &handler) noexcept {
-  m_finalizeUpdateHandler = handler;
-}
-
 void ComponentView::FinalizeUpdates(winrt::Microsoft::ReactNative::ComponentViewUpdateMask updateMask) noexcept {
-  if (m_finalizeUpdateHandler) {
-    m_finalizeUpdateHandler(*this, updateMask);
+  if (m_builder && m_builder->FinalizeUpdateHandler()) {
+    m_builder->FinalizeUpdateHandler()(*this, updateMask);
   }
 }
 
@@ -257,13 +241,9 @@ facebook::react::Props::Shared ComponentView::props() noexcept {
   return {};
 }
 
-void ComponentView::CustomCommandHandler(const HandleCommandDelegate &handler) noexcept {
-  m_customCommandHandler = handler;
-}
-
 void ComponentView::HandleCommand(const winrt::Microsoft::ReactNative::HandleCommandArgs &args) noexcept {
-  if (m_customCommandHandler) {
-    m_customCommandHandler(*this, args);
+  if (m_builder && m_builder->CustomCommandHandler()) {
+    m_builder->CustomCommandHandler()(*this, args);
   }
 }
 
diff --git a/vnext/Microsoft.ReactNative/Fabric/ComponentView.h b/vnext/Microsoft.ReactNative/Fabric/ComponentView.h
index 7caabb9000e..45f22c34c1d 100644
--- a/vnext/Microsoft.ReactNative/Fabric/ComponentView.h
+++ b/vnext/Microsoft.ReactNative/Fabric/ComponentView.h
@@ -12,6 +12,7 @@
 #include <react/renderer/core/LayoutMetrics.h>
 
 #include <ComponentView.Experimental.interop.h>
+#include <Fabric/Composition/ReactCompositionViewComponentBuilder.h>
 #include <Fabric/Composition/Theme.h>
 #include <uiautomationcore.h>
 #include <winrt/Microsoft.ReactNative.Composition.Input.h>
@@ -80,7 +81,10 @@ struct UnmountChildComponentViewArgs : public UnmountChildComponentViewArgsT<Unm
 
 struct ComponentView
     : public ComponentViewT<ComponentView, ::Microsoft::ReactNative::Composition::Experimental::IComponentViewInterop> {
-  ComponentView(facebook::react::Tag tag, winrt::Microsoft::ReactNative::ReactContext const &reactContext);
+  ComponentView(
+      facebook::react::Tag tag,
+      winrt::Microsoft::ReactNative::ReactContext const &reactContext,
+      winrt::Microsoft::ReactNative::Composition::ReactCompositionViewComponentBuilder *builder);
 
   virtual std::vector<facebook::react::ComponentDescriptorProvider> supplementalComponentDescriptorProviders() noexcept;
   virtual void updateProps(
@@ -115,7 +119,6 @@ struct ComponentView
   virtual void onGettingFocus(const winrt::Microsoft::ReactNative::GettingFocusEventArgs &args) noexcept;
   virtual void onLostFocus(const winrt::Microsoft::ReactNative::Composition::Input::RoutedEventArgs &args) noexcept;
   virtual void onGotFocus(const winrt::Microsoft::ReactNative::Composition::Input::RoutedEventArgs &args) noexcept;
-  void MarkAsCustomComponent() noexcept;
   virtual void onMounted() noexcept;
   bool isMounted() noexcept;
   virtual void onUnmounted() noexcept;
@@ -223,14 +226,6 @@ struct ComponentView
   void UserData(const winrt::IInspectable &userData) noexcept;
   winrt::IInspectable UserData() const noexcept;
 
-  void CustomCommandHandler(const HandleCommandDelegate &handler) noexcept;
-  void UpdatePropsHandler(const UpdatePropsDelegate &handler) noexcept;
-  void UpdateStateHandler(const UpdateStateDelegate &handler) noexcept;
-  void UpdateEventEmitterHandler(const UpdateEventEmitterDelegate &handler) noexcept;
-  void MountChildComponentViewHandler(const MountChildComponentViewDelegate &handler) noexcept;
-  void UnmountChildComponentViewHandler(const UnmountChildComponentViewDelegate &handler) noexcept;
-  void FinalizeUpdateHandler(const UpdateFinalizerDelegate &handler) noexcept;
-
   virtual void MountChildComponentView(
       const winrt::Microsoft::ReactNative::ComponentView &childComponentView,
       uint32_t index) noexcept;
@@ -258,7 +253,7 @@ struct ComponentView
       const winrt::Microsoft::ReactNative::Composition::Input::CharacterReceivedRoutedEventArgs &args) noexcept;
 
  protected:
-  bool m_customComponent : 1 {false}; // Is a user custom component, and so needs to call external override functions
+  winrt::com_ptr<winrt::Microsoft::ReactNative::Composition::ReactCompositionViewComponentBuilder> m_builder;
   bool m_mounted : 1 {false};
   const facebook::react::Tag m_tag;
   winrt::IInspectable m_userData;
@@ -270,14 +265,6 @@ struct ComponentView
   winrt::Windows::Foundation::Collections::IVector<winrt::Microsoft::ReactNative::ComponentView> m_children{
       winrt::single_threaded_vector<winrt::Microsoft::ReactNative::ComponentView>()};
 
-  UpdatePropsDelegate m_updatePropsDelegate{nullptr};
-  UpdateStateDelegate m_updateStateDelegate{nullptr};
-  HandleCommandDelegate m_customCommandHandler{nullptr};
-  UpdateFinalizerDelegate m_finalizeUpdateHandler{nullptr};
-  MountChildComponentViewDelegate m_mountChildComponentViewHandler{nullptr};
-  UnmountChildComponentViewDelegate m_unmountChildComponentViewHandler{nullptr};
-  UpdateEventEmitterDelegate m_updateEventEmitterHandler{nullptr};
-
   winrt::event<
       winrt::Windows::Foundation::EventHandler<winrt::Microsoft::ReactNative::Composition::Input::KeyRoutedEventArgs>>
       m_keyDownEvent;
diff --git a/vnext/Microsoft.ReactNative/Fabric/Composition/CompositionViewComponentView.cpp b/vnext/Microsoft.ReactNative/Fabric/Composition/CompositionViewComponentView.cpp
index a8468fd2f14..ee8fca97d80 100644
--- a/vnext/Microsoft.ReactNative/Fabric/Composition/CompositionViewComponentView.cpp
+++ b/vnext/Microsoft.ReactNative/Fabric/Composition/CompositionViewComponentView.cpp
@@ -53,8 +53,9 @@ ComponentView::ComponentView(
     const winrt::Microsoft::ReactNative::Composition::Experimental::ICompositionContext &compContext,
     facebook::react::Tag tag,
     winrt::Microsoft::ReactNative::ReactContext const &reactContext,
-    ComponentViewFeatures flags)
-    : base_type(tag, reactContext), m_compContext(compContext), m_flags(flags) {
+    ComponentViewFeatures flags,
+    winrt::Microsoft::ReactNative::Composition::ReactCompositionViewComponentBuilder *builder)
+    : base_type(tag, reactContext, builder), m_compContext(compContext), m_flags(flags) {
   m_outerVisual = compContext.CreateSpriteVisual(); // TODO could be a raw ContainerVisual if we had a
                                                     // CreateContainerVisual in ICompositionContext
 }
@@ -933,24 +934,15 @@ ViewComponentView::ViewComponentView(
     const winrt::Microsoft::ReactNative::Composition::Experimental::ICompositionContext &compContext,
     facebook::react::Tag tag,
     winrt::Microsoft::ReactNative::ReactContext const &reactContext,
-    ComponentViewFeatures flags)
-    : base_type(compContext, tag, reactContext, flags),
+    ComponentViewFeatures flags,
+    winrt::Microsoft::ReactNative::Composition::ReactCompositionViewComponentBuilder *builder)
+    : base_type(compContext, tag, reactContext, flags, builder),
       m_props(defaultProps ? defaultProps : ViewComponentView::defaultProps()) {}
 
 winrt::Microsoft::ReactNative::Composition::Experimental::IVisual ViewComponentView::createVisual() noexcept {
   return m_compContext.CreateSpriteVisual();
 }
 
-void ViewComponentView::CreateVisualHandler(
-    const winrt::Microsoft::ReactNative::Composition::CreateVisualDelegate &handler) {
-  m_createVisualHandler = handler;
-}
-
-winrt::Microsoft::ReactNative::Composition::CreateVisualDelegate ViewComponentView::CreateVisualHandler()
-    const noexcept {
-  return m_createVisualHandler;
-}
-
 void ViewComponentView::CreateInternalVisualHandler(
     const winrt::Microsoft::ReactNative::Composition::Experimental::CreateInternalVisualDelegate &handler) {
   m_createInternalVisualHandler = handler;
@@ -965,10 +957,10 @@ void ViewComponentView::ensureVisual() noexcept {
   if (!m_visual) {
     if (m_createInternalVisualHandler) {
       m_visual = m_createInternalVisualHandler(*this);
-    } else if (m_createVisualHandler) {
+    } else if (m_builder && m_builder->CreateVisualHandler()) {
       m_visual =
           winrt::Microsoft::ReactNative::Composition::Experimental::MicrosoftCompositionContextHelper::CreateVisual(
-              m_createVisualHandler(*this));
+              m_builder->CreateVisualHandler()(*this));
     } else {
       m_visual = createVisual();
     }
@@ -986,6 +978,8 @@ winrt::Microsoft::ReactNative::ComponentView ViewComponentView::Create(
 
 winrt::Microsoft::ReactNative::Composition::Experimental::IVisual
 ViewComponentView::VisualToMountChildrenInto() noexcept {
+  if (m_builder && m_builder->VisualToMountChildrenIntoHandler())
+    return m_builder->VisualToMountChildrenIntoHandler()(*this);
   return Visual();
 }
 
@@ -1233,7 +1227,7 @@ winrt::Microsoft::ReactNative::ViewProps ViewComponentView::ViewProps() noexcept
 
 winrt::Microsoft::ReactNative::ViewProps ViewComponentView::ViewPropsInner() noexcept {
   // If we have AbiViewProps, then we dont need to new up a props wrapper
-  if (m_customComponent) {
+  if (m_builder) {
     const auto &abiViewProps = *std::static_pointer_cast<const ::Microsoft::ReactNative::AbiViewProps>(m_props);
     return abiViewProps.ViewProps();
   }
diff --git a/vnext/Microsoft.ReactNative/Fabric/Composition/CompositionViewComponentView.h b/vnext/Microsoft.ReactNative/Fabric/Composition/CompositionViewComponentView.h
index 29f1412878d..ee7c13e9a67 100644
--- a/vnext/Microsoft.ReactNative/Fabric/Composition/CompositionViewComponentView.h
+++ b/vnext/Microsoft.ReactNative/Fabric/Composition/CompositionViewComponentView.h
@@ -35,7 +35,8 @@ struct ComponentView : public ComponentViewT<
       const winrt::Microsoft::ReactNative::Composition::Experimental::ICompositionContext &compContext,
       facebook::react::Tag tag,
       winrt::Microsoft::ReactNative::ReactContext const &reactContext,
-      ComponentViewFeatures flags);
+      ComponentViewFeatures flags,
+      winrt::Microsoft::ReactNative::Composition::ReactCompositionViewComponentBuilder *builder);
   virtual ~ComponentView();
 
   virtual winrt::Microsoft::ReactNative::Composition::Experimental::IVisual Visual() const noexcept {
@@ -208,7 +209,8 @@ struct ViewComponentView : public ViewComponentViewT<
       const winrt::Microsoft::ReactNative::Composition::Experimental::ICompositionContext &compContext,
       facebook::react::Tag tag,
       winrt::Microsoft::ReactNative::ReactContext const &reactContext,
-      ComponentViewFeatures flags);
+      ComponentViewFeatures flags,
+      winrt::Microsoft::ReactNative::Composition::ReactCompositionViewComponentBuilder *builder = nullptr);
 
   virtual winrt::Microsoft::ReactNative::Composition::Experimental::IVisual createVisual() noexcept;
 
@@ -226,7 +228,6 @@ struct ViewComponentView : public ViewComponentViewT<
   bool m_hasNonVisualChildren{false};
   facebook::react::SharedViewProps m_props;
   winrt::Microsoft::ReactNative::Composition::Experimental::IVisual m_visual{nullptr};
-  winrt::Microsoft::ReactNative::Composition::CreateVisualDelegate m_createVisualHandler{nullptr};
   winrt::Microsoft::ReactNative::Composition::Experimental::CreateInternalVisualDelegate m_createInternalVisualHandler{
       nullptr};
 };
diff --git a/vnext/Microsoft.ReactNative/Fabric/Composition/ContentIslandComponentView.cpp b/vnext/Microsoft.ReactNative/Fabric/Composition/ContentIslandComponentView.cpp
index 84b10002bd8..70f73d834fa 100644
--- a/vnext/Microsoft.ReactNative/Fabric/Composition/ContentIslandComponentView.cpp
+++ b/vnext/Microsoft.ReactNative/Fabric/Composition/ContentIslandComponentView.cpp
@@ -22,8 +22,15 @@ namespace winrt::Microsoft::ReactNative::Composition::implementation {
 ContentIslandComponentView::ContentIslandComponentView(
     const winrt::Microsoft::ReactNative::Composition::Experimental::ICompositionContext &compContext,
     facebook::react::Tag tag,
-    winrt::Microsoft::ReactNative::ReactContext const &reactContext)
-    : base_type(ViewComponentView::defaultProps(), compContext, tag, reactContext, ComponentViewFeatures::Default) {
+    winrt::Microsoft::ReactNative::ReactContext const &reactContext,
+    ReactCompositionViewComponentBuilder *builder)
+    : base_type(
+          ViewComponentView::defaultProps(),
+          compContext,
+          tag,
+          reactContext,
+          ComponentViewFeatures::Default,
+          builder) {
   m_mountedToken = Mounted([](const winrt::IInspectable &, const winrt::Microsoft::ReactNative::ComponentView &view) {
     view.as<ContentIslandComponentView>()->OnMounted();
   });
diff --git a/vnext/Microsoft.ReactNative/Fabric/Composition/ContentIslandComponentView.h b/vnext/Microsoft.ReactNative/Fabric/Composition/ContentIslandComponentView.h
index 3dc0259a3f2..ae252c9bb61 100644
--- a/vnext/Microsoft.ReactNative/Fabric/Composition/ContentIslandComponentView.h
+++ b/vnext/Microsoft.ReactNative/Fabric/Composition/ContentIslandComponentView.h
@@ -40,7 +40,8 @@ struct ContentIslandComponentView : ContentIslandComponentViewT<ContentIslandCom
   ContentIslandComponentView(
       const winrt::Microsoft::ReactNative::Composition::Experimental::ICompositionContext &compContext,
       facebook::react::Tag tag,
-      winrt::Microsoft::ReactNative::ReactContext const &reactContext);
+      winrt::Microsoft::ReactNative::ReactContext const &reactContext,
+      ReactCompositionViewComponentBuilder *builder);
   ~ContentIslandComponentView() noexcept;
 
  private:
diff --git a/vnext/Microsoft.ReactNative/Fabric/Composition/ReactCompositionViewComponentBuilder.cpp b/vnext/Microsoft.ReactNative/Fabric/Composition/ReactCompositionViewComponentBuilder.cpp
index 7059334941f..b19c3bd9b56 100644
--- a/vnext/Microsoft.ReactNative/Fabric/Composition/ReactCompositionViewComponentBuilder.cpp
+++ b/vnext/Microsoft.ReactNative/Fabric/Composition/ReactCompositionViewComponentBuilder.cpp
@@ -6,6 +6,7 @@
 #include <Fabric/Composition/CompositionViewComponentView.h>
 #include <Fabric/Composition/ContentIslandComponentView.h>
 #include <strsafe.h>
+#include "CompositionContextHelper.h"
 #include "DynamicWriter.h"
 #include "ReactHost/MsoUtils.h"
 
@@ -52,24 +53,6 @@ LayoutHandler ReactCompositionViewComponentBuilder::LayoutHandler() const noexce
 void ReactCompositionViewComponentBuilder::InitializeComponentView(
     const winrt::Microsoft::ReactNative::ComponentView &view) noexcept {
   auto self = winrt::get_self<winrt::Microsoft::ReactNative::implementation::ComponentView>(view);
-  self->MarkAsCustomComponent();
-  if (m_customCommandHandler)
-    self->CustomCommandHandler(m_customCommandHandler);
-  if (m_finalizeUpdateHandler)
-    self->FinalizeUpdateHandler(m_finalizeUpdateHandler);
-  if (m_updatePropsHandler)
-    self->UpdatePropsHandler(m_updatePropsHandler);
-  if (m_updateStateHandler)
-    self->UpdateStateHandler(m_updateStateHandler);
-  if (m_updateEventEmitterHandler)
-    self->UpdateEventEmitterHandler(m_updateEventEmitterHandler);
-  if (m_mountChildComponentViewHandler)
-    self->MountChildComponentViewHandler(m_mountChildComponentViewHandler);
-  if (m_unmountChildComponentViewHandler)
-    self->UnmountChildComponentViewHandler(m_unmountChildComponentViewHandler);
-  if (m_createVisualHandler)
-    view.as<winrt::Microsoft::ReactNative::Composition::implementation::ViewComponentView>()->CreateVisualHandler(
-        m_createVisualHandler);
 }
 
 void ReactCompositionViewComponentBuilder::SetComponentViewInitializer(
@@ -78,8 +61,9 @@ void ReactCompositionViewComponentBuilder::SetComponentViewInitializer(
                        const IReactContext &reactContext,
                        int32_t tag,
                        const Experimental::ICompositionContext &context,
-                       ComponentViewFeatures) {
-    auto view = winrt::make<winrt::Microsoft::ReactNative::implementation::ComponentView>(tag, reactContext);
+                       ComponentViewFeatures,
+                       ReactCompositionViewComponentBuilder &builder) {
+    auto view = winrt::make<winrt::Microsoft::ReactNative::implementation::ComponentView>(tag, reactContext, &builder);
     initializer(view);
     return view;
   };
@@ -94,9 +78,10 @@ void ReactCompositionViewComponentBuilder::SetViewComponentViewInitializer(
                        const IReactContext &reactContext,
                        int32_t tag,
                        const Experimental::ICompositionContext &context,
-                       ComponentViewFeatures features) {
+                       ComponentViewFeatures features,
+                       ReactCompositionViewComponentBuilder &builder) {
     auto view = winrt::make<implementation::ViewComponentView>(
-        implementation::ViewComponentView::defaultProps(), context, tag, reactContext, features);
+        implementation::ViewComponentView::defaultProps(), context, tag, reactContext, features, &builder);
     initializer(view);
     return view;
   };
@@ -108,14 +93,15 @@ void ReactCompositionViewComponentBuilder::SetViewComponentViewInitializer(
 
 void ReactCompositionViewComponentBuilder::SetContentIslandComponentViewInitializer(
     const ComponentIslandComponentViewInitializer &initializer) noexcept {
-  m_fnCreateView =
-      [initializer](
-          const IReactContext &reactContext,
-          int32_t tag,
-          const Experimental::ICompositionContext &context,
-          ComponentViewFeatures) -> winrt::Microsoft::ReactNative::Composition::ContentIslandComponentView {
+  m_fnCreateView = [initializer](
+                       const IReactContext &reactContext,
+                       int32_t tag,
+                       const Experimental::ICompositionContext &context,
+                       ComponentViewFeatures /*features*/,
+                       ReactCompositionViewComponentBuilder &builder)
+      -> winrt::Microsoft::ReactNative::Composition::ContentIslandComponentView {
     auto view = winrt::make<winrt::Microsoft::ReactNative::Composition::implementation::ContentIslandComponentView>(
-        context, tag, reactContext);
+        context, tag, reactContext, &builder);
     initializer(view);
     return view;
   };
@@ -166,46 +152,108 @@ void ReactCompositionViewComponentBuilder::SetCustomCommandHandler(HandleCommand
   m_customCommandHandler = impl;
 }
 
+const HandleCommandDelegate &ReactCompositionViewComponentBuilder::CustomCommandHandler() const noexcept {
+  return m_customCommandHandler;
+}
+
 void ReactCompositionViewComponentBuilder::SetFinalizeUpdateHandler(UpdateFinalizerDelegate impl) noexcept {
   m_finalizeUpdateHandler = impl;
 }
 
+const UpdateFinalizerDelegate &ReactCompositionViewComponentBuilder::FinalizeUpdateHandler() const noexcept {
+  return m_finalizeUpdateHandler;
+}
+
 void ReactCompositionViewComponentBuilder::SetUpdatePropsHandler(UpdatePropsDelegate impl) noexcept {
   m_updatePropsHandler = impl;
 }
 
+const winrt::Microsoft::ReactNative::UpdatePropsDelegate &ReactCompositionViewComponentBuilder::UpdatePropsHandler()
+    const noexcept {
+  return m_updatePropsHandler;
+}
+
 void ReactCompositionViewComponentBuilder::SetUpdateStateHandler(UpdateStateDelegate impl) noexcept {
   m_updateStateHandler = impl;
 }
 
+const winrt::Microsoft::ReactNative::UpdateStateDelegate &ReactCompositionViewComponentBuilder::UpdateStateHandler()
+    const noexcept {
+  return m_updateStateHandler;
+}
+
 void ReactCompositionViewComponentBuilder::SetUpdateEventEmitterHandler(UpdateEventEmitterDelegate impl) noexcept {
   m_updateEventEmitterHandler = impl;
 }
 
+const UpdateEventEmitterDelegate &ReactCompositionViewComponentBuilder::UpdateEventEmitterHandler() const noexcept {
+  return m_updateEventEmitterHandler;
+}
+
 void ReactCompositionViewComponentBuilder::SetMountChildComponentViewHandler(
     MountChildComponentViewDelegate impl) noexcept {
   m_mountChildComponentViewHandler = impl;
 }
 
+const MountChildComponentViewDelegate &ReactCompositionViewComponentBuilder::MountChildComponentViewHandler()
+    const noexcept {
+  return m_mountChildComponentViewHandler;
+}
+
 void ReactCompositionViewComponentBuilder::SetUnmountChildComponentViewHandler(
     UnmountChildComponentViewDelegate impl) noexcept {
   m_unmountChildComponentViewHandler = impl;
 }
 
+const UnmountChildComponentViewDelegate &ReactCompositionViewComponentBuilder::UnmountChildComponentViewHandler()
+    const noexcept {
+  return m_unmountChildComponentViewHandler;
+}
+
 void ReactCompositionViewComponentBuilder::SetCreateVisualHandler(CreateVisualDelegate impl) noexcept {
   m_createVisualHandler = impl;
 }
 
+const CreateVisualDelegate &ReactCompositionViewComponentBuilder::CreateVisualHandler() const noexcept {
+  return m_createVisualHandler;
+}
+
 void ReactCompositionViewComponentBuilder::SetViewFeatures(ComponentViewFeatures viewFeatures) noexcept {
   m_features = viewFeatures;
 }
 
+void ReactCompositionViewComponentBuilder::SetVisualToMountChildrenIntoHandler(
+    VisualToMountChildrenIntoDelegate impl) noexcept {
+  m_visualToMountChildrenIntoHandler = [impl](const winrt::Microsoft::ReactNative::ComponentView &view) {
+    return winrt::Microsoft::ReactNative::Composition::Experimental::implementation::MicrosoftCompositionContextHelper::
+        CreateVisual(impl(view));
+  };
+}
+
+void ReactCompositionViewComponentBuilder::SetIVisualToMountChildrenIntoHandler(
+    winrt::Microsoft::ReactNative::Composition::Experimental::IVisualToMountChildrenIntoDelegate impl) noexcept {
+  m_visualToMountChildrenIntoHandler = impl;
+}
+
+const winrt::Microsoft::ReactNative::Composition::Experimental::IVisualToMountChildrenIntoDelegate &
+ReactCompositionViewComponentBuilder::VisualToMountChildrenIntoHandler() const noexcept {
+  return m_visualToMountChildrenIntoHandler;
+}
+
+void ReactCompositionViewComponentBuilder::SetUpdateLayoutMetricsHandler(UpdateLayoutMetricsDelegate impl) noexcept {
+  m_updateLayoutMetricsHandler = impl;
+}
+
+const UpdateLayoutMetricsDelegate &ReactCompositionViewComponentBuilder::UpdateLayoutMetricsHandler() const noexcept {
+  return m_updateLayoutMetricsHandler;
+}
+
 winrt::Microsoft::ReactNative::ComponentView ReactCompositionViewComponentBuilder::CreateView(
     const IReactContext &reactContext,
     int32_t tag,
     const Experimental::ICompositionContext &context) noexcept {
   assert(m_fnCreateView);
-  auto view = m_fnCreateView(reactContext, tag, context, m_features);
+  auto view = m_fnCreateView(reactContext, tag, context, m_features, *this);
   InitializeComponentView(view);
   return view;
 }
diff --git a/vnext/Microsoft.ReactNative/Fabric/Composition/ReactCompositionViewComponentBuilder.h b/vnext/Microsoft.ReactNative/Fabric/Composition/ReactCompositionViewComponentBuilder.h
index 220884bd6c6..618aae06e5d 100644
--- a/vnext/Microsoft.ReactNative/Fabric/Composition/ReactCompositionViewComponentBuilder.h
+++ b/vnext/Microsoft.ReactNative/Fabric/Composition/ReactCompositionViewComponentBuilder.h
@@ -44,6 +44,10 @@ struct ReactCompositionViewComponentBuilder : winrt::implements<
   void SetContentIslandComponentViewInitializer(const ComponentIslandComponentViewInitializer &initializer) noexcept;
   void SetCreateVisualHandler(CreateVisualDelegate impl) noexcept;
   void SetViewFeatures(ComponentViewFeatures viewFeatures) noexcept;
+  void SetVisualToMountChildrenIntoHandler(VisualToMountChildrenIntoDelegate impl) noexcept;
+  void SetIVisualToMountChildrenIntoHandler(
+      winrt::Microsoft::ReactNative::Composition::Experimental::IVisualToMountChildrenIntoDelegate impl) noexcept;
+  void SetUpdateLayoutMetricsHandler(UpdateLayoutMetricsDelegate impl) noexcept;
 
  public:
   IComponentProps CreateProps(ViewProps props, const IComponentProps &cloneFrom) noexcept;
@@ -60,6 +64,18 @@ struct ReactCompositionViewComponentBuilder : winrt::implements<
       facebook::react::Tag tag,
       const Experimental::ICompositionContext &context) noexcept;
 
+  const UpdateFinalizerDelegate &FinalizeUpdateHandler() const noexcept;
+  const HandleCommandDelegate &CustomCommandHandler() const noexcept;
+  const winrt::Microsoft::ReactNative::UpdatePropsDelegate &UpdatePropsHandler() const noexcept;
+  const winrt::Microsoft::ReactNative::UpdateStateDelegate &UpdateStateHandler() const noexcept;
+  const UpdateEventEmitterDelegate &UpdateEventEmitterHandler() const noexcept;
+  const MountChildComponentViewDelegate &MountChildComponentViewHandler() const noexcept;
+  const UnmountChildComponentViewDelegate &UnmountChildComponentViewHandler() const noexcept;
+  const UpdateLayoutMetricsDelegate &UpdateLayoutMetricsHandler() const noexcept;
+  const CreateVisualDelegate &CreateVisualHandler() const noexcept;
+  const winrt::Microsoft::ReactNative::Composition::Experimental::IVisualToMountChildrenIntoDelegate &
+  VisualToMountChildrenIntoHandler() const noexcept;
+
  private:
   void InitializeComponentView(const winrt::Microsoft::ReactNative::ComponentView &view) noexcept;
 
@@ -74,7 +90,8 @@ struct ReactCompositionViewComponentBuilder : winrt::implements<
       const IReactContext &reactContext,
       int32_t tag,
       const Experimental::ICompositionContext &context,
-      ComponentViewFeatures features)>
+      ComponentViewFeatures features,
+      ReactCompositionViewComponentBuilder &builder)>
       m_fnCreateView;
   std::function<facebook::react::ComponentDescriptorConstructor *()> m_descriptorConstructorFactory;
   winrt::Microsoft::ReactNative::HandleCommandDelegate m_customCommandHandler;
@@ -86,6 +103,9 @@ struct ReactCompositionViewComponentBuilder : winrt::implements<
   winrt::Microsoft::ReactNative::UnmountChildComponentViewDelegate m_unmountChildComponentViewHandler;
 
   winrt::Microsoft::ReactNative::Composition::CreateVisualDelegate m_createVisualHandler;
+  winrt::Microsoft::ReactNative::Composition::Experimental::IVisualToMountChildrenIntoDelegate
+      m_visualToMountChildrenIntoHandler;
+  UpdateLayoutMetricsDelegate m_updateLayoutMetricsHandler;
 };
 
 } // namespace winrt::Microsoft::ReactNative::Composition
diff --git a/vnext/Microsoft.ReactNative/IReactCompositionViewComponentBuilder.idl b/vnext/Microsoft.ReactNative/IReactCompositionViewComponentBuilder.idl
index 021103285d9..2edf2b822aa 100644
--- a/vnext/Microsoft.ReactNative/IReactCompositionViewComponentBuilder.idl
+++ b/vnext/Microsoft.ReactNative/IReactCompositionViewComponentBuilder.idl
@@ -25,6 +25,29 @@ namespace Microsoft.ReactNative.Composition
   [webhosthidden]
   delegate Microsoft.UI.Composition.Visual CreateVisualDelegate(Microsoft.ReactNative.ComponentView view);
 
+  [experimental]
+  delegate void UpdateLayoutMetricsDelegate(Microsoft.ReactNative.ComponentView source, Microsoft.ReactNative.LayoutMetrics newLayoutMetrics, Microsoft.ReactNative.LayoutMetrics oldLayoutMetrics);
+
+  [experimental]
+  [webhosthidden]
+  delegate Microsoft.UI.Composition.Visual VisualToMountChildrenIntoDelegate(Microsoft.ReactNative.ComponentView view);
+
+  namespace Experimental {
+    [experimental]
+    [webhosthidden]
+    DOC_STRING("This type will be removed in future versions")
+    delegate Microsoft.ReactNative.Composition.Experimental.IVisual IVisualToMountChildrenIntoDelegate(Microsoft.ReactNative.ComponentView view);
+
+    [experimental]
+    [webhosthidden]
+    DOC_STRING("This interface is for use when running react-native-windows using a custom compositor. "
+      "This interface will be removed in future versions")
+    interface IReactCompositionViewComponentInternalBuilder
+    {
+      void SetIVisualToMountChildrenIntoHandler(IVisualToMountChildrenIntoDelegate impl);
+    };
+  }
+
   [webhosthidden]
   [experimental]
   DOC_STRING(".")
@@ -34,6 +57,8 @@ namespace Microsoft.ReactNative.Composition
     void SetContentIslandComponentViewInitializer(ComponentIslandComponentViewInitializer initializer);
     void SetCreateVisualHandler(CreateVisualDelegate impl);
     void SetViewFeatures(ComponentViewFeatures viewFeatures);
+    void SetUpdateLayoutMetricsHandler(UpdateLayoutMetricsDelegate impl);
+    void SetVisualToMountChildrenIntoHandler(VisualToMountChildrenIntoDelegate impl);
   };
 
 } // namespace Microsoft.ReactNative