diff --git a/tiramisu/basetype.py b/tiramisu/basetype.py
index 02d3550..92d2e71 100644
--- a/tiramisu/basetype.py
+++ b/tiramisu/basetype.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 "base 'interface' types for option types"
-# Copyright (C) 2012 Team tiramisu (see AUTHORS for all contributors)
+# Copyright (C) 2012-2013 Team tiramisu (see AUTHORS for all contributors)
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -21,7 +21,7 @@
 # the whole pypy projet is under MIT licence
 # ____________________________________________________________
 
-class BaseType(object):
+class CommonType(object):
     def has_properties(self):
         return bool(len(self.properties))
     def has_property(self, propname):
@@ -34,21 +34,44 @@ class BaseType(object):
     def del_property(self, propname):
         if self.has_property(propname):
             self.properties.remove(propname)
+
+#class HiddenBaseType(BaseType):
+#    def hide(self):
+#        self.add_property('hidden')
+#    def show(self):
+#        self.del_property('hidden')
+#    def _is_hidden(self):
+#        # dangerous method: how an Option() can determine its status by itself ? 
+#        return self.has_property('hidden')
+
+#class DisabledBaseType(BaseType):
+#    def disable(self):
+#        self.add_property('disabled')
+#    def enable(self):
+#        self.del_property('disabled')
+#    def _is_disabled(self):
+#        return self.has_property('disabled')
+
+# commonly used properties. Option and OptionDescription will have these methods 
+common_properties = {'hidden': ('hide', 'show', '_is_hidden'), 
+              'disabled': ('disable', 'enable', '_is_disabled')
+             }
+
+basetype_methods = dict()
  
-class HiddenBaseType(BaseType):
-    def hide(self):
-        self.add_property('hidden')
-    def show(self):
-        self.del_property('hidden')
-    def _is_hidden(self):
-        # dangerous method: how an Option() can determine its status by itself ? 
-        return self.has_property('hidden')
+def build_properties(prop, add_prop, del_prop, is_prop):
+    def add_property(self):
+        self.add_property(prop)
+    def del_property(self):
+        self.del_property(prop)
+    def is_property(self):
+        return self.has_property(prop)
+    return {add_prop:add_property, del_prop:del_property, 
+                is_prop:is_property}
 
-class DisabledBaseType(BaseType):
-    def disable(self):
-        self.add_property('disabled')
-    def enable(self):
-        self.del_property('disabled')
-    def _is_disabled(self):
-        return self.has_property('disabled')
+for propname, meth_names in common_properties.items():
+    basetype_methods.update(build_properties(propname, meth_names[0], meth_names[1], 
+                            meth_names[2]))
+
+BaseType = type('BaseType', (CommonType,), basetype_methods)
 
diff --git a/tiramisu/option.py b/tiramisu/option.py
index 88ce51e..386da9c 100644
--- a/tiramisu/option.py
+++ b/tiramisu/option.py
@@ -22,14 +22,15 @@
 # ____________________________________________________________
 import re
 from types import FunctionType
-from tiramisu.basetype import HiddenBaseType, DisabledBaseType
+from tiramisu.basetype import BaseType
 from tiramisu.error import (ConfigError, ConflictConfigError, NotFoundError,
     RequiresError, RequirementRecursionError, MandatoryError,
     PropertiesOptionError)
 from tiramisu.autolib import carry_out_calculation
 from tiramisu.setting import groups, owners
 
-requires_actions = [('hide', 'show'), ('enable', 'disable'), ('freeze', 'unfreeze')]
+requires_actions = [('hide', 'show'), ('enable', 'disable'), 
+                    ('freeze', 'unfreeze')]
 
 available_actions = []
 reverse_actions = {}
@@ -48,7 +49,7 @@ def valid_name(name):
 #____________________________________________________________
 #
 
-class Option(HiddenBaseType, DisabledBaseType):
+class Option(BaseType):
     """
     Abstract base class for configuration option's.
 
@@ -373,7 +374,7 @@ class NetmaskOption(Option):
         # by now the validation is nothing but a string, use IPy instead
         return isinstance(value, str)
 
-class OptionDescription(HiddenBaseType, DisabledBaseType):
+class OptionDescription(BaseType):
     """Config's schema (organisation, group) and container of Options"""
     # the group_type is useful for filtering OptionDescriptions in a config
     group_type = groups.default
diff --git a/tiramisu/setting.py b/tiramisu/setting.py
index 23d2157..0e989c6 100644
--- a/tiramisu/setting.py
+++ b/tiramisu/setting.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 "sets the options of the configuration objects Config object itself"
-# Copyright (C) 2012 Team tiramisu (see AUTHORS for all contributors)
+# Copyright (C) 2012-2013 Team tiramisu (see AUTHORS for all contributors)
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by