diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index 91b0656fcb..8d5c0eb6ce 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -1,6 +1,7 @@
 0.4.21 (in development)
 ------------------------------------------------------------------------
 - Fix: [#4225] Ride Construction window offers non-existent banked sloped to level curve (original bug).
+- Fix: [#10379] Banners outside the park can be renamed and modified (original bug).
 - Fix: [#23897] Reverse Freefall Coaster slope up to vertical track piece does not draw a vertical tunnel.
 
 0.4.20 (2025-02-25)
diff --git a/src/openrct2/actions/BannerSetNameAction.cpp b/src/openrct2/actions/BannerSetNameAction.cpp
index 1ab6bb6889..1b069ee941 100644
--- a/src/openrct2/actions/BannerSetNameAction.cpp
+++ b/src/openrct2/actions/BannerSetNameAction.cpp
@@ -53,6 +53,28 @@ GameActions::Result BannerSetNameAction::Query() const
         return GameActions::Result(
             GameActions::Status::InvalidParameters, STR_CANT_RENAME_BANNER, STR_ERR_BANNER_ELEMENT_NOT_FOUND);
     }
+
+    TileElement* tileElement = BannerGetTileElement(_bannerIndex);
+
+    if (tileElement == nullptr)
+    {
+        LOG_ERROR("Banner tile element not found for bannerIndex %d", _bannerIndex);
+        return GameActions::Result(
+            GameActions::Status::InvalidParameters, STR_CANT_RENAME_BANNER, STR_ERR_BANNER_ELEMENT_NOT_FOUND);
+    }
+
+    BannerElement* bannerElement = tileElement->AsBanner();
+    CoordsXYZD loc = { banner->position.ToCoordsXY(), bannerElement->GetBaseZ(), bannerElement->GetPosition() };
+
+    if (!LocationValid(loc))
+    {
+        return GameActions::Result(GameActions::Status::InvalidParameters, STR_CANT_RENAME_BANNER, STR_OFF_EDGE_OF_MAP);
+    }
+    if (!MapCanBuildAt({ loc.x, loc.y, loc.z - 16 }))
+    {
+        return GameActions::Result(GameActions::Status::NotOwned, STR_CANT_RENAME_BANNER, STR_LAND_NOT_OWNED_BY_PARK);
+    }
+
     return GameActions::Result();
 }
 
diff --git a/src/openrct2/actions/BannerSetStyleAction.cpp b/src/openrct2/actions/BannerSetStyleAction.cpp
index 7a8c96fa0a..7dd041fda1 100644
--- a/src/openrct2/actions/BannerSetStyleAction.cpp
+++ b/src/openrct2/actions/BannerSetStyleAction.cpp
@@ -11,6 +11,7 @@
 
 #include "../Context.h"
 #include "../Diagnostic.h"
+#include "../localisation/StringIdType.h"
 #include "../management/Finance.h"
 #include "../windows/Intent.h"
 #include "../world/Banner.h"
@@ -47,14 +48,19 @@ void BannerSetStyleAction::Serialise(DataSerialiser& stream)
 
 GameActions::Result BannerSetStyleAction::Query() const
 {
+    StringId errorTitle = STR_CANT_REPAINT_THIS;
+    if (_type == BannerSetStyleType::NoEntry)
+    {
+        errorTitle = STR_CANT_RENAME_BANNER;
+    }
+
     auto res = GameActions::Result();
 
     auto banner = GetBanner(_bannerIndex);
     if (banner == nullptr)
     {
         LOG_ERROR("Banner not found for bannerIndex %d", _bannerIndex);
-        return GameActions::Result(
-            GameActions::Status::InvalidParameters, STR_CANT_REPAINT_THIS, STR_ERR_BANNER_ELEMENT_NOT_FOUND);
+        return GameActions::Result(GameActions::Status::InvalidParameters, errorTitle, STR_ERR_BANNER_ELEMENT_NOT_FOUND);
     }
 
     res.Expenditure = ExpenditureType::Landscaping;
@@ -66,8 +72,19 @@ GameActions::Result BannerSetStyleAction::Query() const
     if (tileElement == nullptr)
     {
         LOG_ERROR("Banner tile element not found for bannerIndex %d", _bannerIndex);
-        return GameActions::Result(
-            GameActions::Status::InvalidParameters, STR_CANT_REPAINT_THIS, STR_ERR_BANNER_ELEMENT_NOT_FOUND);
+        return GameActions::Result(GameActions::Status::InvalidParameters, errorTitle, STR_ERR_BANNER_ELEMENT_NOT_FOUND);
+    }
+
+    BannerElement* bannerElement = tileElement->AsBanner();
+    CoordsXYZ loc = { banner->position.ToCoordsXY(), bannerElement->GetBaseZ() };
+
+    if (!LocationValid(loc))
+    {
+        return GameActions::Result(GameActions::Status::InvalidParameters, errorTitle, STR_OFF_EDGE_OF_MAP);
+    }
+    if (!MapCanBuildAt({ loc.x, loc.y, loc.z - 16 }))
+    {
+        return GameActions::Result(GameActions::Status::NotOwned, errorTitle, STR_LAND_NOT_OWNED_BY_PARK);
     }
 
     switch (_type)
@@ -93,7 +110,7 @@ GameActions::Result BannerSetStyleAction::Query() const
             if (tileElement->AsBanner() == nullptr)
             {
                 LOG_ERROR("Tile element was not a banner.");
-                return GameActions::Result(GameActions::Status::Unknown, STR_CANT_REPAINT_THIS, kStringIdNone);
+                return GameActions::Result(GameActions::Status::Unknown, STR_CANT_RENAME_BANNER, kStringIdNone);
             }
             break;
         default:
diff --git a/src/openrct2/actions/SignSetNameAction.cpp b/src/openrct2/actions/SignSetNameAction.cpp
index 64a4b150ef..11d1d2ae34 100644
--- a/src/openrct2/actions/SignSetNameAction.cpp
+++ b/src/openrct2/actions/SignSetNameAction.cpp
@@ -51,6 +51,27 @@ GameActions::Result SignSetNameAction::Query() const
         LOG_ERROR("Banner not found for bannerIndex %d", _bannerIndex);
         return GameActions::Result(GameActions::Status::InvalidParameters, STR_CANT_RENAME_SIGN, kStringIdNone);
     }
+
+    TileElement* tileElement = BannerGetTileElement(_bannerIndex);
+
+    if (tileElement == nullptr)
+    {
+        LOG_ERROR("Banner tile element not found for bannerIndex %d", _bannerIndex);
+        return GameActions::Result(
+            GameActions::Status::InvalidParameters, STR_CANT_RENAME_BANNER, STR_ERR_BANNER_ELEMENT_NOT_FOUND);
+    }
+
+    CoordsXYZ loc = { banner->position.ToCoordsXY(), tileElement->GetBaseZ() };
+
+    if (!LocationValid(loc))
+    {
+        return GameActions::Result(GameActions::Status::InvalidParameters, STR_CANT_RENAME_BANNER, STR_OFF_EDGE_OF_MAP);
+    }
+    if (!MapCanBuildAt({ loc.x, loc.y, loc.z - 16 }))
+    {
+        return GameActions::Result(GameActions::Status::NotOwned, STR_CANT_RENAME_BANNER, STR_LAND_NOT_OWNED_BY_PARK);
+    }
+
     return GameActions::Result();
 }
 
diff --git a/src/openrct2/actions/SignSetStyleAction.cpp b/src/openrct2/actions/SignSetStyleAction.cpp
index 121d6ceddc..a97d50db5b 100644
--- a/src/openrct2/actions/SignSetStyleAction.cpp
+++ b/src/openrct2/actions/SignSetStyleAction.cpp
@@ -58,6 +58,8 @@ GameActions::Result SignSetStyleAction::Query() const
         return GameActions::Result(GameActions::Status::InvalidParameters, STR_CANT_REPAINT_THIS, kStringIdNone);
     }
 
+    CoordsXYZ loc;
+
     if (_isLarge)
     {
         TileElement* tileElement = BannerGetTileElement(_bannerIndex);
@@ -72,6 +74,7 @@ GameActions::Result SignSetStyleAction::Query() const
                 "Tile element has type %u, expected %d (LargeScenery)", tileElement->GetType(), TileElementType::LargeScenery);
             return GameActions::Result(GameActions::Status::InvalidParameters, STR_CANT_REPAINT_THIS, kStringIdNone);
         }
+        loc = { banner->position.ToCoordsXY(), tileElement->GetBaseZ() };
     }
     else
     {
@@ -82,6 +85,16 @@ GameActions::Result SignSetStyleAction::Query() const
             LOG_ERROR("Wall element not found for bannerIndex", _bannerIndex);
             return GameActions::Result(GameActions::Status::InvalidParameters, STR_CANT_REPAINT_THIS, kStringIdNone);
         }
+        loc = { banner->position.ToCoordsXY(), wallElement->GetBaseZ() };
+    }
+
+    if (!LocationValid(loc))
+    {
+        return GameActions::Result(GameActions::Status::InvalidParameters, STR_CANT_RENAME_BANNER, STR_OFF_EDGE_OF_MAP);
+    }
+    if (!MapCanBuildAt({ loc.x, loc.y, loc.z - 16 }))
+    {
+        return GameActions::Result(GameActions::Status::NotOwned, STR_CANT_RENAME_BANNER, STR_LAND_NOT_OWNED_BY_PARK);
     }
 
     return GameActions::Result();