diff --git a/script/scaffold/templates/config_flow/integration/__init__.py b/script/scaffold/templates/config_flow/integration/__init__.py
index 334ac8dbbc9..24a0c1d7350 100644
--- a/script/scaffold/templates/config_flow/integration/__init__.py
+++ b/script/scaffold/templates/config_flow/integration/__init__.py
@@ -1,5 +1,8 @@
 """The NEW_NAME integration."""
+from __future__ import annotations
+
 import asyncio
+from typing import Any
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
@@ -11,12 +14,12 @@ from .const import DOMAIN
 PLATFORMS = ["light"]
 
 
-async def async_setup(hass: HomeAssistant, config: dict):
+async def async_setup(hass: HomeAssistant, config: dict[str, Any]) -> bool:
     """Set up the NEW_NAME component."""
     return True
 
 
-async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up NEW_NAME from a config entry."""
     # TODO Store an API object for your platforms to access
     # hass.data[DOMAIN][entry.entry_id] = MyApi(...)
@@ -29,7 +32,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
     return True
 
 
-async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry):
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Unload a config entry."""
     unload_ok = all(
         await asyncio.gather(
diff --git a/script/scaffold/templates/config_flow/integration/config_flow.py b/script/scaffold/templates/config_flow/integration/config_flow.py
index c9700463c86..aa05f633df4 100644
--- a/script/scaffold/templates/config_flow/integration/config_flow.py
+++ b/script/scaffold/templates/config_flow/integration/config_flow.py
@@ -1,9 +1,14 @@
 """Config flow for NEW_NAME integration."""
+from __future__ import annotations
+
 import logging
+from typing import Any
 
 import voluptuous as vol
 
-from homeassistant import config_entries, core, exceptions
+from homeassistant import config_entries
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import HomeAssistantError
 
 from .const import DOMAIN  # pylint:disable=unused-import
 
@@ -19,16 +24,16 @@ class PlaceholderHub:
     TODO Remove this placeholder class and replace with things from your PyPI package.
     """
 
-    def __init__(self, host):
+    def __init__(self, host: str) -> None:
         """Initialize."""
         self.host = host
 
-    async def authenticate(self, username, password) -> bool:
+    async def authenticate(self, username: str, password: str) -> bool:
         """Test if we can authenticate with the host."""
         return True
 
 
-async def validate_input(hass: core.HomeAssistant, data):
+async def validate_input(hass: HomeAssistant, data: dict[str, Any]) -> dict[str, Any]:
     """Validate the user input allows us to connect.
 
     Data has the keys from STEP_USER_DATA_SCHEMA with values provided by the user.
@@ -62,7 +67,9 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
     # TODO pick one of the available connection classes in homeassistant/config_entries.py
     CONNECTION_CLASS = config_entries.CONN_CLASS_UNKNOWN
 
-    async def async_step_user(self, user_input=None):
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> dict[str, Any]:
         """Handle the initial step."""
         if user_input is None:
             return self.async_show_form(
@@ -88,9 +95,9 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
         )
 
 
-class CannotConnect(exceptions.HomeAssistantError):
+class CannotConnect(HomeAssistantError):
     """Error to indicate we cannot connect."""
 
 
-class InvalidAuth(exceptions.HomeAssistantError):
+class InvalidAuth(HomeAssistantError):
     """Error to indicate there is invalid auth."""
diff --git a/script/scaffold/templates/config_flow/tests/test_config_flow.py b/script/scaffold/templates/config_flow/tests/test_config_flow.py
index 04eab6e683c..8205fdbeda4 100644
--- a/script/scaffold/templates/config_flow/tests/test_config_flow.py
+++ b/script/scaffold/templates/config_flow/tests/test_config_flow.py
@@ -4,9 +4,10 @@ from unittest.mock import patch
 from homeassistant import config_entries, setup
 from homeassistant.components.NEW_DOMAIN.config_flow import CannotConnect, InvalidAuth
 from homeassistant.components.NEW_DOMAIN.const import DOMAIN
+from homeassistant.core import HomeAssistant
 
 
-async def test_form(hass):
+async def test_form(hass: HomeAssistant) -> None:
     """Test we get the form."""
     await setup.async_setup_component(hass, "persistent_notification", {})
     result = await hass.config_entries.flow.async_init(
@@ -45,7 +46,7 @@ async def test_form(hass):
     assert len(mock_setup_entry.mock_calls) == 1
 
 
-async def test_form_invalid_auth(hass):
+async def test_form_invalid_auth(hass: HomeAssistant) -> None:
     """Test we handle invalid auth."""
     result = await hass.config_entries.flow.async_init(
         DOMAIN, context={"source": config_entries.SOURCE_USER}
@@ -68,7 +69,7 @@ async def test_form_invalid_auth(hass):
     assert result2["errors"] == {"base": "invalid_auth"}
 
 
-async def test_form_cannot_connect(hass):
+async def test_form_cannot_connect(hass: HomeAssistant) -> None:
     """Test we handle cannot connect error."""
     result = await hass.config_entries.flow.async_init(
         DOMAIN, context={"source": config_entries.SOURCE_USER}
diff --git a/script/scaffold/templates/config_flow_discovery/integration/__init__.py b/script/scaffold/templates/config_flow_discovery/integration/__init__.py
index 334ac8dbbc9..24a0c1d7350 100644
--- a/script/scaffold/templates/config_flow_discovery/integration/__init__.py
+++ b/script/scaffold/templates/config_flow_discovery/integration/__init__.py
@@ -1,5 +1,8 @@
 """The NEW_NAME integration."""
+from __future__ import annotations
+
 import asyncio
+from typing import Any
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
@@ -11,12 +14,12 @@ from .const import DOMAIN
 PLATFORMS = ["light"]
 
 
-async def async_setup(hass: HomeAssistant, config: dict):
+async def async_setup(hass: HomeAssistant, config: dict[str, Any]) -> bool:
     """Set up the NEW_NAME component."""
     return True
 
 
-async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up NEW_NAME from a config entry."""
     # TODO Store an API object for your platforms to access
     # hass.data[DOMAIN][entry.entry_id] = MyApi(...)
@@ -29,7 +32,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
     return True
 
 
-async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry):
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Unload a config entry."""
     unload_ok = all(
         await asyncio.gather(
diff --git a/script/scaffold/templates/config_flow_discovery/integration/config_flow.py b/script/scaffold/templates/config_flow_discovery/integration/config_flow.py
index db5f719ce3d..4d2ee2c9f6b 100644
--- a/script/scaffold/templates/config_flow_discovery/integration/config_flow.py
+++ b/script/scaffold/templates/config_flow_discovery/integration/config_flow.py
@@ -2,12 +2,13 @@
 import my_pypi_dependency
 
 from homeassistant import config_entries
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_entry_flow
 
 from .const import DOMAIN
 
 
-async def _async_has_devices(hass) -> bool:
+async def _async_has_devices(hass: HomeAssistant) -> bool:
     """Return if there are devices that can be discovered."""
     # TODO Check if there are any devices that can be discovered in the network.
     devices = await hass.async_add_executor_job(my_pypi_dependency.discover)
diff --git a/script/scaffold/templates/config_flow_oauth2/integration/__init__.py b/script/scaffold/templates/config_flow_oauth2/integration/__init__.py
index 4e290921047..304df8f9c79 100644
--- a/script/scaffold/templates/config_flow_oauth2/integration/__init__.py
+++ b/script/scaffold/templates/config_flow_oauth2/integration/__init__.py
@@ -1,5 +1,8 @@
 """The NEW_NAME integration."""
+from __future__ import annotations
+
 import asyncio
+from typing import Any
 
 import voluptuous as vol
 
@@ -32,7 +35,7 @@ CONFIG_SCHEMA = vol.Schema(
 PLATFORMS = ["light"]
 
 
-async def async_setup(hass: HomeAssistant, config: dict):
+async def async_setup(hass: HomeAssistant, config: dict[str, Any]) -> bool:
     """Set up the NEW_NAME component."""
     hass.data[DOMAIN] = {}
 
@@ -54,7 +57,7 @@ async def async_setup(hass: HomeAssistant, config: dict):
     return True
 
 
-async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up NEW_NAME from a config entry."""
     implementation = (
         await config_entry_oauth2_flow.async_get_config_entry_implementation(
@@ -80,7 +83,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
     return True
 
 
-async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry):
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Unload a config entry."""
     unload_ok = all(
         await asyncio.gather(
diff --git a/script/scaffold/templates/config_flow_oauth2/integration/api.py b/script/scaffold/templates/config_flow_oauth2/integration/api.py
index 50b54399579..4f15099c8e1 100644
--- a/script/scaffold/templates/config_flow_oauth2/integration/api.py
+++ b/script/scaffold/templates/config_flow_oauth2/integration/api.py
@@ -4,7 +4,7 @@ from asyncio import run_coroutine_threadsafe
 from aiohttp import ClientSession
 import my_pypi_package
 
-from homeassistant import core
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_entry_oauth2_flow
 
 # TODO the following two API examples are based on our suggested best practices
@@ -17,9 +17,9 @@ class ConfigEntryAuth(my_pypi_package.AbstractAuth):
 
     def __init__(
         self,
-        hass: core.HomeAssistant,
+        hass: HomeAssistant,
         oauth_session: config_entry_oauth2_flow.OAuth2Session,
-    ):
+    ) -> None:
         """Initialize NEW_NAME Auth."""
         self.hass = hass
         self.session = oauth_session
@@ -41,7 +41,7 @@ class AsyncConfigEntryAuth(my_pypi_package.AbstractAuth):
         self,
         websession: ClientSession,
         oauth_session: config_entry_oauth2_flow.OAuth2Session,
-    ):
+    ) -> None:
         """Initialize NEW_NAME auth."""
         super().__init__(websession)
         self._oauth_session = oauth_session
diff --git a/script/scaffold/templates/config_flow_oauth2/tests/test_config_flow.py b/script/scaffold/templates/config_flow_oauth2/tests/test_config_flow.py
index dd0fc3446b3..ff9c5bfb848 100644
--- a/script/scaffold/templates/config_flow_oauth2/tests/test_config_flow.py
+++ b/script/scaffold/templates/config_flow_oauth2/tests/test_config_flow.py
@@ -7,6 +7,7 @@ from homeassistant.components.NEW_DOMAIN.const import (
     OAUTH2_AUTHORIZE,
     OAUTH2_TOKEN,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_entry_oauth2_flow
 
 CLIENT_ID = "1234"
@@ -14,8 +15,11 @@ CLIENT_SECRET = "5678"
 
 
 async def test_full_flow(
-    hass, aiohttp_client, aioclient_mock, current_request_with_host
-):
+    hass: HomeAssistant,
+    aiohttp_client,
+    aioclient_mock,
+    current_request_with_host,
+) -> None:
     """Check full flow."""
     assert await setup.async_setup_component(
         hass,
diff --git a/script/scaffold/templates/device_action/tests/test_device_action.py b/script/scaffold/templates/device_action/tests/test_device_action.py
index 91a4693ebeb..424fa0a9afd 100644
--- a/script/scaffold/templates/device_action/tests/test_device_action.py
+++ b/script/scaffold/templates/device_action/tests/test_device_action.py
@@ -3,7 +3,8 @@ import pytest
 
 from homeassistant.components import automation
 from homeassistant.components.NEW_DOMAIN import DOMAIN
-from homeassistant.helpers import device_registry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry, entity_registry
 from homeassistant.setup import async_setup_component
 
 from tests.common import (
@@ -17,18 +18,22 @@ from tests.common import (
 
 
 @pytest.fixture
-def device_reg(hass):
+def device_reg(hass: HomeAssistant) -> device_registry.DeviceRegistry:
     """Return an empty, loaded, registry."""
     return mock_device_registry(hass)
 
 
 @pytest.fixture
-def entity_reg(hass):
+def entity_reg(hass: HomeAssistant) -> entity_registry.EntityRegistry:
     """Return an empty, loaded, registry."""
     return mock_registry(hass)
 
 
-async def test_get_actions(hass, device_reg, entity_reg):
+async def test_get_actions(
+    hass: HomeAssistant,
+    device_reg: device_registry.DeviceRegistry,
+    entity_reg: entity_registry.EntityRegistry,
+) -> None:
     """Test we get the expected actions from a NEW_DOMAIN."""
     config_entry = MockConfigEntry(domain="test", data={})
     config_entry.add_to_hass(hass)
@@ -55,7 +60,7 @@ async def test_get_actions(hass, device_reg, entity_reg):
     assert_lists_same(actions, expected_actions)
 
 
-async def test_action(hass):
+async def test_action(hass: HomeAssistant) -> None:
     """Test for turn_on and turn_off actions."""
     assert await async_setup_component(
         hass,
diff --git a/script/scaffold/templates/device_condition/tests/test_device_condition.py b/script/scaffold/templates/device_condition/tests/test_device_condition.py
index 07e0afd05eb..9a283fa1f5b 100644
--- a/script/scaffold/templates/device_condition/tests/test_device_condition.py
+++ b/script/scaffold/templates/device_condition/tests/test_device_condition.py
@@ -1,10 +1,13 @@
 """The tests for NEW_NAME device conditions."""
+from __future__ import annotations
+
 import pytest
 
 from homeassistant.components import automation
 from homeassistant.components.NEW_DOMAIN import DOMAIN
 from homeassistant.const import STATE_OFF, STATE_ON
-from homeassistant.helpers import device_registry
+from homeassistant.core import HomeAssistant, ServiceCall
+from homeassistant.helpers import device_registry, entity_registry
 from homeassistant.setup import async_setup_component
 
 from tests.common import (
@@ -18,24 +21,28 @@ from tests.common import (
 
 
 @pytest.fixture
-def device_reg(hass):
+def device_reg(hass: HomeAssistant) -> device_registry.DeviceRegistry:
     """Return an empty, loaded, registry."""
     return mock_device_registry(hass)
 
 
 @pytest.fixture
-def entity_reg(hass):
+def entity_reg(hass: HomeAssistant) -> entity_registry.EntityRegistry:
     """Return an empty, loaded, registry."""
     return mock_registry(hass)
 
 
 @pytest.fixture
-def calls(hass):
+def calls(hass: HomeAssistant) -> list[ServiceCall]:
     """Track calls to a mock service."""
     return async_mock_service(hass, "test", "automation")
 
 
-async def test_get_conditions(hass, device_reg, entity_reg):
+async def test_get_conditions(
+    hass: HomeAssistant,
+    device_reg: device_registry.DeviceRegistry,
+    entity_reg: entity_registry.EntityRegistry,
+) -> None:
     """Test we get the expected conditions from a NEW_DOMAIN."""
     config_entry = MockConfigEntry(domain="test", data={})
     config_entry.add_to_hass(hass)
@@ -64,7 +71,7 @@ async def test_get_conditions(hass, device_reg, entity_reg):
     assert_lists_same(conditions, expected_conditions)
 
 
-async def test_if_state(hass, calls):
+async def test_if_state(hass: HomeAssistant, calls: list[ServiceCall]) -> None:
     """Test for turn_on and turn_off conditions."""
     hass.states.async_set("NEW_DOMAIN.entity", STATE_ON)
 
diff --git a/script/scaffold/templates/integration/integration/__init__.py b/script/scaffold/templates/integration/integration/__init__.py
index 0ab65cb7da8..c1f34d5f5b1 100644
--- a/script/scaffold/templates/integration/integration/__init__.py
+++ b/script/scaffold/templates/integration/integration/__init__.py
@@ -1,4 +1,8 @@
 """The NEW_NAME integration."""
+from __future__ import annotations
+
+from typing import Any
+
 import voluptuous as vol
 
 from homeassistant.core import HomeAssistant
@@ -8,6 +12,6 @@ from .const import DOMAIN
 CONFIG_SCHEMA = vol.Schema({vol.Optional(DOMAIN): {}}, extra=vol.ALLOW_EXTRA)
 
 
-async def async_setup(hass: HomeAssistant, config: dict):
+async def async_setup(hass: HomeAssistant, config: dict[str, Any]) -> bool:
     """Set up the NEW_NAME integration."""
     return True
diff --git a/script/scaffold/templates/reproduce_state/integration/reproduce_state.py b/script/scaffold/templates/reproduce_state/integration/reproduce_state.py
index 2031109a6bd..19e046f4c92 100644
--- a/script/scaffold/templates/reproduce_state/integration/reproduce_state.py
+++ b/script/scaffold/templates/reproduce_state/integration/reproduce_state.py
@@ -12,8 +12,7 @@ from homeassistant.const import (
     STATE_OFF,
     STATE_ON,
 )
-from homeassistant.core import Context, State
-from homeassistant.helpers.typing import HomeAssistantType
+from homeassistant.core import Context, HomeAssistant, State
 
 from . import DOMAIN
 
@@ -24,7 +23,7 @@ VALID_STATES = {STATE_ON, STATE_OFF}
 
 
 async def _async_reproduce_state(
-    hass: HomeAssistantType,
+    hass: HomeAssistant,
     state: State,
     *,
     context: Context | None = None,
@@ -69,7 +68,7 @@ async def _async_reproduce_state(
 
 
 async def async_reproduce_states(
-    hass: HomeAssistantType,
+    hass: HomeAssistant,
     states: Iterable[State],
     *,
     context: Context | None = None,
diff --git a/script/scaffold/templates/reproduce_state/tests/test_reproduce_state.py b/script/scaffold/templates/reproduce_state/tests/test_reproduce_state.py
index ff15625ad7c..83d95570b45 100644
--- a/script/scaffold/templates/reproduce_state/tests/test_reproduce_state.py
+++ b/script/scaffold/templates/reproduce_state/tests/test_reproduce_state.py
@@ -1,10 +1,14 @@
 """Test reproduce state for NEW_NAME."""
-from homeassistant.core import State
+import pytest
+
+from homeassistant.core import HomeAssistant, State
 
 from tests.common import async_mock_service
 
 
-async def test_reproducing_states(hass, caplog):
+async def test_reproducing_states(
+    hass: HomeAssistant, caplog: pytest.LogCaptureFixture
+) -> None:
     """Test reproducing NEW_NAME states."""
     hass.states.async_set("NEW_DOMAIN.entity_off", "off", {})
     hass.states.async_set("NEW_DOMAIN.entity_on", "on", {"color": "red"})