diff --git a/tests/test_metaconfig.py b/tests/test_metaconfig.py
index 9ce25df..463b905 100644
--- a/tests/test_metaconfig.py
+++ b/tests/test_metaconfig.py
@@ -87,11 +87,14 @@ def test_none():
     conf2 = meta.config('conf2')
     assert meta.option('od1.i3').value.get() is conf1.option('od1.i3').value.get() is conf2.option('od1.i3').value.get() is None
     assert meta.option('od1.i3').owner.get() is conf1.option('od1.i3').owner.get() is conf2.option('od1.i3').owner.get() is owners.default
+    assert meta.option('od1.i3').owner.isdefault() and conf1.option('od1.i3').owner.isdefault()
     #
     #assert meta.option('od1.i3').value.set(3) == []
     meta.option('od1.i3').value.set(3)
     assert meta.option('od1.i3').value.get() == conf1.option('od1.i3').value.get() == conf2.option('od1.i3').value.get() == 3
     assert meta.option('od1.i3').owner.get() is conf1.option('od1.i3').owner.get() is conf2.option('od1.i3').owner.get() is owners.meta1
+    assert not meta.option('od1.i3').owner.isdefault()
+    assert conf1.option('od1.i3').owner.isdefault()
     #
     conf1.option('od1.i3').value.set(2)
     assert meta.option('od1.i3').value.get() == conf2.option('od1.i3').value.get() == 3
@@ -110,6 +113,8 @@ def test_none():
     assert conf1.option('od1.i3').value.get() == 2
     assert meta.option('od1.i3').owner.get() is conf2.option('od1.i3').owner.get() is owners.default
     assert conf1.option('od1.i3').owner.get() is owners.user
+    assert meta.option("od1.i3").owner.default() is owners.default
+    assert conf1.option("od1.i3").owner.default() is owners.default
     #
     conf1.option('od1.i3').value.reset()
     assert meta.option('od1.i3').value.get() is conf1.option('od1.i3').value.get() is conf2.option('od1.i3').value.get() is None
diff --git a/tiramisu/api.py b/tiramisu/api.py
index 335d6d6..553f098 100644
--- a/tiramisu/api.py
+++ b/tiramisu/api.py
@@ -717,10 +717,27 @@ class TiramisuOptionOwner(CommonTiramisuOption):
             self._subconfig, validate_meta=not only_self
         )
 
+    @option_type(["symlink", "option", "with_index"])
+    def default(self):
+        values = self._config_bag.context.get_values()
+        return values.get_default_owner(self._subconfig)
+
     @option_type(["symlink", "option", "with_index"])
     def isdefault(self):
         """Is option has defaut value"""
-        return self._config_bag.context.get_owner(self._subconfig) == owners.default
+        subconfig = self._subconfig
+        s_properties = subconfig.properties
+        if (
+            "frozen" in s_properties
+            and "force_default_on_freeze" in s_properties
+        ):
+            return True
+        context = self._config_bag.context
+        subconfig = context._get(
+            subconfig,
+            True,
+        )
+        return not context.get_values().hasvalue(subconfig.path, index=subconfig.index)
 
     @option_type(["option", "with_index"])
     def set(
@@ -1775,7 +1792,7 @@ class TiramisuContextOption(TiramisuConfig, _TiramisuOptionWalk):
         self,
     ):
         """Get option path"""
-        return None
+        return self._config_bag.context.get_config_path()
 
     def has_dependency(
         self,
@@ -1840,6 +1857,9 @@ class TiramisuContextOption(TiramisuConfig, _TiramisuOptionWalk):
             self._load_dict()
         return self._tiramisu_dict.set_updates(body)
 
+    def __repr__(self):
+        return f'<{self.__class__.__name__} path="{self.path()}">'
+
 
 class _TiramisuContextConfigReset:
     def reset(self):
@@ -2075,9 +2095,7 @@ class TiramisuAPI(TiramisuHelp):
 
 
 class ConfigProp(TiramisuAPI, TiramisuContextOption):
-    def __repr__(self):
-        return f"<Config path=None>"
-
+    pass
 
 class Config(TiramisuAPI, TiramisuContextOption):
     """Root config object that enables us to handle the configuration options"""
@@ -2114,9 +2132,6 @@ class Config(TiramisuAPI, TiramisuContextOption):
         except ConfigError:
             pass
 
-    def __repr__(self):
-        return f"<Config path=None>"
-
 
 class MetaConfig(TiramisuAPI, TiramisuContextOption):
     """MetaConfig object that enables us to handle the sub configuration's options
diff --git a/tiramisu/config.py b/tiramisu/config.py
index e9bc3b5..b484fe9 100644
--- a/tiramisu/config.py
+++ b/tiramisu/config.py
@@ -1881,5 +1881,5 @@ class KernelMetaConfig(KernelMixConfig):
         config,
     ):
         if self._impl_descr is not config.get_description():
-            raise ValueError(_("metaconfig must " "have the same optiondescription"))
+            raise ValueError(_("metaconfig must have the same optiondescription"))
         super().add_config(config)
diff --git a/tiramisu/value.py b/tiramisu/value.py
index b40301f..a59a361 100644
--- a/tiramisu/value.py
+++ b/tiramisu/value.py
@@ -126,6 +126,18 @@ class Values:
         )
         return value, has_calculation
 
+    def get_default_owner(
+        self,
+        subconfig: "SubConfig",
+    ) -> Any:
+        msubconfig = self._get_modified_parent(subconfig)
+        if msubconfig is not None:
+            # retrieved value from parent config
+            return msubconfig.config_bag.context.get_values().getowner(
+                msubconfig
+            )
+        return owners.default
+
     def get_default_value(
         self,
         subconfig: "SubConfig",