diff --git a/temporalio/testing/_workflow.py b/temporalio/testing/_workflow.py
index 3015a86d..c971f7fe 100644
--- a/temporalio/testing/_workflow.py
+++ b/temporalio/testing/_workflow.py
@@ -91,6 +91,7 @@ async def start_local(
         download_dest_dir: Optional[str] = None,
         ui: bool = False,
         runtime: Optional[temporalio.runtime.Runtime] = None,
+        search_attributes: Sequence[temporalio.common.SearchAttributeKey] = [],
         dev_server_existing_path: Optional[str] = None,
         dev_server_database_filename: Optional[str] = None,
         dev_server_log_format: str = "pretty",
@@ -138,6 +139,8 @@ async def start_local(
                 needed. If unset, this is the system's temporary directory.
             ui: If ``True``, will start a UI in the dev server.
             runtime: Specific runtime to use or default if unset.
+            search_attributes: Search attributes to register with the dev
+                server.
             dev_server_existing_path: Existing path to the CLI binary.
                 If present, no download will be attempted to fetch the binary.
             dev_server_database_filename: Path to the Sqlite database to use
@@ -167,6 +170,14 @@ async def start_local(
                 dev_server_log_level = "error"
             else:
                 dev_server_log_level = "fatal"
+        # Add search attributes
+        if search_attributes:
+            new_args = []
+            for attr in search_attributes:
+                new_args.append("--search-attribute")
+                new_args.append(f"{attr.name}={attr._metadata_type}")
+            new_args += dev_server_extra_args
+            dev_server_extra_args = new_args
         # Start CLI dev server
         runtime = runtime or temporalio.runtime.Runtime.default()
         server = await temporalio.bridge.testing.EphemeralServer.start_dev_server(
diff --git a/tests/testing/test_workflow.py b/tests/testing/test_workflow.py
index 22bdd818..7538cb29 100644
--- a/tests/testing/test_workflow.py
+++ b/tests/testing/test_workflow.py
@@ -12,11 +12,17 @@
     Client,
     Interceptor,
     OutboundInterceptor,
+    RPCError,
     StartWorkflowInput,
     WorkflowFailureError,
     WorkflowHandle,
 )
-from temporalio.common import RetryPolicy
+from temporalio.common import (
+    RetryPolicy,
+    SearchAttributeKey,
+    SearchAttributePair,
+    TypedSearchAttributes,
+)
 from temporalio.exceptions import (
     ActivityError,
     ApplicationError,
@@ -245,6 +251,70 @@ def assert_proper_error(err: Optional[BaseException]) -> None:
             assert_proper_error(err.value.cause)
 
 
+async def test_search_attributes_on_dev_server(
+    client: Client, env: WorkflowEnvironment
+):
+    if env.supports_time_skipping:
+        pytest.skip("Only testing for local dev server")
+
+    # Search attributes
+    sa_prefix = f"{uuid.uuid4()}_"
+    text_attr = SearchAttributeKey.for_text(f"{sa_prefix}text")
+    keyword_attr = SearchAttributeKey.for_keyword(f"{sa_prefix}keyword")
+    keyword_list_attr = SearchAttributeKey.for_keyword_list(f"{sa_prefix}keyword_list")
+    int_attr = SearchAttributeKey.for_int(f"{sa_prefix}int")
+    float_attr = SearchAttributeKey.for_float(f"{sa_prefix}double")
+    bool_attr = SearchAttributeKey.for_bool(f"{sa_prefix}bool")
+    datetime_attr = SearchAttributeKey.for_datetime(f"{sa_prefix}datetime")
+    attrs = TypedSearchAttributes(
+        [
+            SearchAttributePair(text_attr, "text1"),
+            SearchAttributePair(keyword_attr, "keyword1"),
+            SearchAttributePair(
+                keyword_list_attr,
+                ["keywordlist1", "keywordlist2"],
+            ),
+            SearchAttributePair(int_attr, 123),
+            SearchAttributePair(float_attr, 456.78),
+            SearchAttributePair(bool_attr, True),
+            SearchAttributePair(
+                datetime_attr, datetime(2001, 2, 3, 4, 5, 6, tzinfo=timezone.utc)
+            ),
+        ]
+    )
+
+    # Confirm that we can't start a workflow on existing environment
+    with pytest.raises(RPCError) as err:
+        await client.start_workflow(
+            "some-workflow",
+            id=f"wf-{uuid.uuid4()}",
+            task_queue=f"tq-{uuid.uuid4()}",
+            search_attributes=attrs,
+        )
+    assert "no mapping defined" in str(err.value)
+
+    # But we can in a new environment with the attrs set
+    async with await WorkflowEnvironment.start_local(
+        search_attributes=[
+            text_attr,
+            keyword_attr,
+            keyword_list_attr,
+            int_attr,
+            float_attr,
+            bool_attr,
+            datetime_attr,
+        ]
+    ) as env:
+        handle = await env.client.start_workflow(
+            "some-workflow",
+            id=f"wf-{uuid.uuid4()}",
+            task_queue=f"tq-{uuid.uuid4()}",
+            search_attributes=attrs,
+        )
+        desc = await handle.describe()
+        assert attrs == desc.typed_search_attributes
+
+
 def assert_timestamp_from_now(
     ts: Union[datetime, float], expected_from_now: float, max_delta: float = 30
 ) -> None: