diff --git a/CHANGELOG.md b/CHANGELOG.md
index 10f1d8b2..6d312cce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # Rojo Changelog
 
 ## Unreleased Changes
+* Add `blockedPlaceIds` project config field to allow blocking place ids from being live synced ([#1021])
 * Adds support for `.plugin.lua(u)` files - this applies the `Plugin` RunContext. ([#1008])
 * Added support for Roblox's `Content` type. This replaces the old `Content` type with `ContentId` to reflect Roblox's change.
  	If you were previously using the fully-qualified syntax for `Content` you will need to switch it to `ContentId`.
@@ -108,6 +109,7 @@
 [#987]: https://github.com/rojo-rbx/rojo/pull/987
 [#988]: https://github.com/rojo-rbx/rojo/pull/988
 [#1008]: https://github.com/rojo-rbx/rojo/pull/1008
+[#1021]: https://github.com/rojo-rbx/rojo/pull/1021
 
 ## [7.4.3] - August 6th, 2024
 * Fixed issue with building binary files introduced in 7.4.2
diff --git a/plugin/src/ApiContext.lua b/plugin/src/ApiContext.lua
index 68d43095..3eb59003 100644
--- a/plugin/src/ApiContext.lua
+++ b/plugin/src/ApiContext.lua
@@ -45,14 +45,7 @@ end
 
 local function rejectWrongPlaceId(infoResponseBody)
 	if infoResponseBody.expectedPlaceIds ~= nil then
-		local foundId = false
-
-		for _, id in ipairs(infoResponseBody.expectedPlaceIds) do
-			if id == game.PlaceId then
-				foundId = true
-				break
-			end
-		end
+		local foundId = table.find(infoResponseBody.expectedPlaceIds, game.PlaceId)
 
 		if not foundId then
 			local idList = {}
@@ -62,10 +55,30 @@ local function rejectWrongPlaceId(infoResponseBody)
 
 			local message = (
 				"Found a Rojo server, but its project is set to only be used with a specific list of places."
-				.. "\nYour place ID is %s, but needs to be one of these:"
+				.. "\nYour place ID is %u, but needs to be one of these:"
 				.. "\n%s"
 				.. "\n\nTo change this list, edit 'servePlaceIds' in your .project.json file."
-			):format(tostring(game.PlaceId), table.concat(idList, "\n"))
+			):format(game.PlaceId, table.concat(idList, "\n"))
+
+			return Promise.reject(message)
+		end
+	end
+
+	if infoResponseBody.unexpectedPlaceIds ~= nil then
+		local foundId = table.find(infoResponseBody.unexpectedPlaceIds, game.PlaceId)
+
+		if foundId then
+			local idList = {}
+			for _, id in ipairs(infoResponseBody.unexpectedPlaceIds) do
+				table.insert(idList, "- " .. tostring(id))
+			end
+
+			local message = (
+				"Found a Rojo server, but its project is set to not be used with a specific list of places."
+				.. "\nYour place ID is %u, but needs to not be one of these:"
+				.. "\n%s"
+				.. "\n\nTo change this list, edit 'blockedPlaceIds' in your .project.json file."
+			):format(game.PlaceId, table.concat(idList, "\n"))
 
 			return Promise.reject(message)
 		end
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__add_folder_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__add_folder_info.snap
index 95be56ed..ea946219 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__add_folder_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__add_folder_info.snap
@@ -1,7 +1,6 @@
 ---
 source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
-
 ---
 expectedPlaceIds: ~
 gameId: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__edit_init_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__edit_init_info.snap
index 53400451..eb3c203e 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__edit_init_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__edit_init_info.snap
@@ -1,7 +1,6 @@
 ---
 source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
-
 ---
 expectedPlaceIds: ~
 gameId: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__empty_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__empty_info.snap
index dd97da1a..7dc5960d 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__empty_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__empty_info.snap
@@ -1,7 +1,6 @@
 ---
 source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
-
 ---
 expectedPlaceIds: ~
 gameId: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__empty_json_model_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__empty_json_model_info.snap
index 70168b53..0adbe189 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__empty_json_model_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__empty_json_model_info.snap
@@ -1,7 +1,6 @@
 ---
 source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
-
 ---
 expectedPlaceIds: ~
 gameId: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__move_folder_of_stuff_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__move_folder_of_stuff_info.snap
index 9aefc12e..7f482638 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__move_folder_of_stuff_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__move_folder_of_stuff_info.snap
@@ -1,7 +1,6 @@
 ---
 source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
-
 ---
 expectedPlaceIds: ~
 gameId: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_default_project_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_default_project_info.snap
index 954ba622..eb95a44c 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_default_project_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_default_project_info.snap
@@ -1,6 +1,5 @@
 ---
 source: tests/tests/serve.rs
-assertion_line: 316
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_project_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_project_info.snap
index d9772de1..7cd631ee 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_project_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_project_info.snap
@@ -1,6 +1,5 @@
 ---
 source: tests/tests/serve.rs
-assertion_line: 335
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_top_level_project_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_top_level_project_info.snap
index 3ad79c37..3400cc06 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_top_level_project_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__no_name_top_level_project_info.snap
@@ -1,6 +1,5 @@
 ---
 source: tests/tests/serve.rs
-assertion_line: 351
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_info.snap
index 46ee7ea0..a37231dd 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_info.snap
@@ -10,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_patch_update_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_patch_update_info.snap
index ac25f16b..a37231dd 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_patch_update_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_patch_update_info.snap
@@ -10,3 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_remove_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_remove_info.snap
index b51fd1f8..4fea62ef 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_remove_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__ref_properties_remove_info.snap
@@ -10,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__remove_file_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__remove_file_info.snap
index 29404cd8..27622724 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__remove_file_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__remove_file_info.snap
@@ -1,7 +1,6 @@
 ---
 source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
-
 ---
 expectedPlaceIds: ~
 gameId: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__scripts_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__scripts_info.snap
index 19bc473f..fb85d7cd 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__scripts_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__scripts_info.snap
@@ -1,7 +1,6 @@
 ---
 source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
-
 ---
 expectedPlaceIds: ~
 gameId: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_alone_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_alone_info.snap
index 514b8858..8154c8ad 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_alone_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_alone_info.snap
@@ -1,6 +1,5 @@
 ---
 source: tests/tests/serve.rs
-assertion_line: 265
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_complex_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_complex_info.snap
index 3ed2b805..6755cc99 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_complex_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_complex_info.snap
@@ -1,6 +1,5 @@
 ---
 source: tests/tests/serve.rs
-assertion_line: 281
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_no_extension_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_no_extension_info.snap
index 3503e595..cf07c891 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_no_extension_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_no_extension_info.snap
@@ -1,6 +1,5 @@
 ---
 source: tests/tests/serve.rs
-assertion_line: 297
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
@@ -11,4 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
-
+unexpectedPlaceIds: ~
diff --git a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_no_name_project_info.snap b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_no_name_project_info.snap
index 532e8b2e..8eeb02f9 100644
--- a/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_no_name_project_info.snap
+++ b/rojo-test/serve-test-snapshots/end_to_end__tests__serve__sync_rule_no_name_project_info.snap
@@ -1,6 +1,5 @@
 ---
 source: tests/tests/serve.rs
-assertion_line: 383
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
@@ -11,3 +10,4 @@ protocolVersion: 4
 rootInstanceId: id-2
 serverVersion: "[server-version]"
 sessionId: id-1
+unexpectedPlaceIds: ~
diff --git a/src/project.rs b/src/project.rs
index 1e9c7875..a87d6341 100644
--- a/src/project.rs
+++ b/src/project.rs
@@ -79,6 +79,14 @@ pub struct Project {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub serve_place_ids: Option<HashSet<u64>>,
 
+    /// If specified, contains a set of place IDs that this project is
+    /// not compatible with when doing live sync.
+    ///
+    /// This setting is intended to help prevent syncing a Rojo project into the
+    /// wrong Roblox place.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub blocked_place_ids: Option<HashSet<u64>>,
+
     /// If specified, sets the current place's place ID when connecting to the
     /// Rojo server from Roblox Studio.
     #[serde(skip_serializing_if = "Option::is_none")]
diff --git a/src/serve_session.rs b/src/serve_session.rs
index 25317d74..4f585018 100644
--- a/src/serve_session.rs
+++ b/src/serve_session.rs
@@ -208,6 +208,10 @@ impl ServeSession {
         self.root_project.serve_place_ids.as_ref()
     }
 
+    pub fn blocked_place_ids(&self) -> Option<&HashSet<u64>> {
+        self.root_project.blocked_place_ids.as_ref()
+    }
+
     pub fn serve_address(&self) -> Option<IpAddr> {
         self.root_project.serve_address
     }
diff --git a/src/web/api.rs b/src/web/api.rs
index a7d283a2..ca39eccc 100644
--- a/src/web/api.rs
+++ b/src/web/api.rs
@@ -64,6 +64,7 @@ impl ApiService {
             session_id: self.serve_session.session_id(),
             project_name: self.serve_session.project_name().to_owned(),
             expected_place_ids: self.serve_session.serve_place_ids().cloned(),
+            unexpected_place_ids: self.serve_session.blocked_place_ids().cloned(),
             place_id: self.serve_session.place_id(),
             game_id: self.serve_session.game_id(),
             root_instance_id,
diff --git a/src/web/interface.rs b/src/web/interface.rs
index 64d08834..4ac80999 100644
--- a/src/web/interface.rs
+++ b/src/web/interface.rs
@@ -160,6 +160,7 @@ pub struct ServerInfoResponse {
     pub protocol_version: u64,
     pub project_name: String,
     pub expected_place_ids: Option<HashSet<u64>>,
+    pub unexpected_place_ids: Option<HashSet<u64>>,
     pub game_id: Option<u64>,
     pub place_id: Option<u64>,
     pub root_instance_id: Ref,