diff --git a/homeassistant/loader.py b/homeassistant/loader.py
index d06e34b89df..68e2a2f2d95 100644
--- a/homeassistant/loader.py
+++ b/homeassistant/loader.py
@@ -255,6 +255,7 @@ class Manifest(TypedDict, total=False):
     usb: list[dict[str, str]]
     homekit: dict[str, list[str]]
     is_built_in: bool
+    overwrites_built_in: bool
     version: str
     codeowners: list[str]
     loggers: list[str]
@@ -451,6 +452,7 @@ async def async_get_integration_descriptions(
             "single_config_entry": integration.manifest.get(
                 "single_config_entry", False
             ),
+            "overwrites_built_in": integration.overwrites_built_in,
         }
         custom_flows[integration_key][integration.domain] = metadata
 
@@ -762,6 +764,7 @@ class Integration:
         self.file_path = file_path
         self.manifest = manifest
         manifest["is_built_in"] = self.is_built_in
+        manifest["overwrites_built_in"] = self.overwrites_built_in
 
         if self.dependencies:
             self._all_dependencies_resolved: bool | None = None
@@ -909,6 +912,16 @@ class Integration:
         """Test if package is a built-in integration."""
         return self.pkg_path.startswith(PACKAGE_BUILTIN)
 
+    @property
+    def overwrites_built_in(self) -> bool:
+        """Return if package overwrites a built-in integration."""
+        if self.is_built_in:
+            return False
+        core_comp_path = (
+            pathlib.Path(__file__).parent / "components" / self.domain / "manifest.json"
+        )
+        return core_comp_path.is_file()
+
     @property
     def version(self) -> AwesomeVersion | None:
         """Return the version of the integration."""
diff --git a/tests/components/diagnostics/test_init.py b/tests/components/diagnostics/test_init.py
index 7f583395387..ffed7e21f60 100644
--- a/tests/components/diagnostics/test_init.py
+++ b/tests/components/diagnostics/test_init.py
@@ -174,6 +174,7 @@ async def test_download_diagnostics(
             "dependencies": [],
             "domain": "fake_integration",
             "is_built_in": True,
+            "overwrites_built_in": False,
             "name": "fake_integration",
             "requirements": [],
         },
@@ -260,6 +261,7 @@ async def test_download_diagnostics(
             "dependencies": [],
             "domain": "fake_integration",
             "is_built_in": True,
+            "overwrites_built_in": False,
             "name": "fake_integration",
             "requirements": [],
         },
diff --git a/tests/test_loader.py b/tests/test_loader.py
index 01305dde002..b6889a06666 100644
--- a/tests/test_loader.py
+++ b/tests/test_loader.py
@@ -583,6 +583,7 @@ def test_integration_properties(hass: HomeAssistant) -> None:
     assert integration.dependencies == ["test-dep"]
     assert integration.requirements == ["test-req==1.0.0"]
     assert integration.is_built_in is True
+    assert integration.overwrites_built_in is False
     assert integration.version == "1.0.0"
 
     integration = loader.Integration(
@@ -597,6 +598,7 @@ def test_integration_properties(hass: HomeAssistant) -> None:
         },
     )
     assert integration.is_built_in is False
+    assert integration.overwrites_built_in is True
     assert integration.homekit is None
     assert integration.zeroconf is None
     assert integration.dhcp is None
@@ -619,6 +621,7 @@ def test_integration_properties(hass: HomeAssistant) -> None:
         },
     )
     assert integration.is_built_in is False
+    assert integration.overwrites_built_in is True
     assert integration.homekit is None
     assert integration.zeroconf == [{"type": "_hue._tcp.local.", "name": "hue*"}]
     assert integration.dhcp is None
@@ -828,6 +831,29 @@ async def test_get_custom_components(hass: HomeAssistant) -> None:
         mock_get.assert_called_once_with(hass)
 
 
+@pytest.mark.usefixtures("enable_custom_integrations")
+async def test_custom_component_overwriting_core(hass: HomeAssistant) -> None:
+    """Test loading a custom component that overwrites a core component."""
+    # First load the core 'light' component
+    core_light = await loader.async_get_integration(hass, "light")
+    assert core_light.is_built_in is True
+
+    # create a mock custom 'light' component
+    mock_integration(
+        hass,
+        MockModule("light", partial_manifest={"version": "1.0.0"}),
+        built_in=False,
+    )
+
+    # Try to load the 'light' component again
+    custom_light = await loader.async_get_integration(hass, "light")
+
+    # Assert that we got the custom component instead of the core one
+    assert custom_light.is_built_in is False
+    assert custom_light.overwrites_built_in is True
+    assert custom_light.version == "1.0.0"
+
+
 async def test_get_config_flows(hass: HomeAssistant) -> None:
     """Verify that custom components with config_flow are available."""
     test_1_integration = _get_test_integration(hass, "test_1", False)