diff --git a/sigi/sites.py b/sigi/sites.py
new file mode 100644
index 0000000..82de2ef
--- /dev/null
+++ b/sigi/sites.py
@@ -0,0 +1,9 @@
+from django.contrib.admin.sites import AdminSite
+from sigi.apps.casas.admin import CasaLegislativa, CasaLegislativaAdmin
+
+class DefaultSite(AdminSite):
+    index_template = 'index.html'
+    login_template = 'login.html'
+
+default = DefaultSite()
+default.register(CasaLegislativa, CasaLegislativaAdmin)
diff --git a/sigi/templates/admin/base_site.html b/sigi/templates/admin/base_site.html
new file mode 100644
index 0000000..e335a6d
--- /dev/null
+++ b/sigi/templates/admin/base_site.html
@@ -0,0 +1,39 @@
+{% extends "admin/base.html" %}
+
+{% block title %}{{ title }} | SIGI{% endblock %}
+
+{% block extrastyle %}
+<style type="text/css">
+<!--
+#nav-global {
+  background-color: #292929;
+}
+
+#nav-global ul {
+  margin: 0;
+  padding: 1px 10px;
+}
+
+#nav-global li {
+  display: inline;
+  list-style-type: none;
+}
+-->
+</style>
+{% endblock %}
+
+{% block branding %}
+<h1 id="site-name">Sistema de Informações Gerenciais do Interlegis</h1>
+{% endblock %}
+
+{% block nav-global %}
+<!--div id="nav-global">
+  <ul>
+    <li>Casas Legislativas</li>
+    <li>Parlamentares</li>
+    <li>Mesas Legislativas</li>
+    <li>Convênios</li>
+    <li>Inventário</li>
+   </ul>
+</div-->
+{% endblock %}
diff --git a/sigi/templates/index.html b/sigi/templates/index.html
new file mode 100644
index 0000000..c17bdcc
--- /dev/null
+++ b/sigi/templates/index.html
@@ -0,0 +1,5 @@
+{% extends "admin/index.html" %}
+
+{% block title %}Dashboard | SIGI{% endblock %}
+
+{% block content_title %}<h1>Dashboard</h1>{% endblock %}
diff --git a/sigi/templates/login.html b/sigi/templates/login.html
new file mode 100644
index 0000000..f4dcd85
--- /dev/null
+++ b/sigi/templates/login.html
@@ -0,0 +1,6 @@
+{% extends "admin/login.html" %}
+{% load i18n %}
+
+{% block branding %}
+<h1 id="site-name">SIGI</h1>
+{% endblock %}
diff --git a/sigi/urls.py b/sigi/urls.py
index e412cf0..81f9ba3 100644
--- a/sigi/urls.py
+++ b/sigi/urls.py
@@ -1,32 +1,29 @@
 from django.conf import settings
 from django.conf.urls.defaults import *
-from django.contrib import admin
 from django.contrib import databrowse
 from django.db.models import get_models
+from sigi import sites
 
-admin.autodiscover()
 map(databrowse.site.register, get_models())
 
 urlpatterns = patterns(
     '',
 
-    (r'^doc/', include('django.contrib.admindocs.urls')),
-    (r'^(.*)', admin.site.root),
-
     # databrowse
     (r'^databrowse/(.*)', databrowse.site.root),
 
     # bug report
     #(r'^bug_report/$', 'sigi.views.bug_report'),
-)
 
-if settings.MAINTENANCE:
-    urlpatterns = patterns('',
-        (r'.*', 'sigi.views.service_unavailable')
-    ) + urlpatterns
+    # admin docs
+    (r'^doc/', include('django.contrib.admindocs.urls')),
+
+    # automatic interface based on admin
+    (r'^(.*)', sites.default.root),
+)
 
-if settings.DEBUG:
-    urlpatterns += patterns(
+if not settings.DEBUG:
+    urlpatterns = patterns(
         '',
 
         # static files
@@ -34,11 +31,11 @@ if settings.DEBUG:
             {'document_root': settings.MEDIA_ROOT}),
 
         (r'^404/$', 'django.views.generic.simple.direct_to_template',
-            {'template': '404.html'}),
+            {'template': 'admin/404.html'}),
 
         (r'^500/$', 'django.views.generic.simple.direct_to_template',
-            {'template': '500.html'}),
+            {'template': 'admin/500.html'}),
 
         (r'^503/$', 'django.views.generic.simple.direct_to_template',
             {'template': '503.html'}),
-    )
+    ) + urlpatterns