diff --git a/src/c3nav/mapdata/models/access.py b/src/c3nav/mapdata/models/access.py
index 2feee118..7704302d 100644
--- a/src/c3nav/mapdata/models/access.py
+++ b/src/c3nav/mapdata/models/access.py
@@ -257,10 +257,6 @@ class AccessRestrictionMixin(SerializableMixin, models.Model):
         ])
         return result
 
-    @classmethod
-    def qs_for_request(cls, request, allow_none=False):
-        return cls.objects.filter(cls.q_for_request(request, allow_none=allow_none))
-
     @classmethod
     def q_for_request(cls, request, prefix='', allow_none=False):
         if request is None and allow_none:
diff --git a/src/c3nav/mapdata/models/base.py b/src/c3nav/mapdata/models/base.py
index 61f765e9..06562c09 100644
--- a/src/c3nav/mapdata/models/base.py
+++ b/src/c3nav/mapdata/models/base.py
@@ -2,6 +2,7 @@ from collections import OrderedDict
 
 from django.core.cache import cache
 from django.db import models
+from django.db.models import Q
 from django.utils.translation import ugettext_lazy as _
 from django.utils.translation import get_language, get_language_info
 
@@ -45,6 +46,14 @@ class SerializableMixin(models.Model):
     def title(self):
         return self._meta.verbose_name + ' ' + str(self.id)
 
+    @classmethod
+    def qs_for_request(cls, request, allow_none=False):
+        return cls.objects.filter(cls.q_for_request(request, allow_none=allow_none))
+
+    @classmethod
+    def q_for_request(cls, *args, **kwargs):
+        return Q()
+
 
 class TitledMixin(SerializableMixin, models.Model):
     title = I18nField(_('Title'), plural_name='titles', blank=True, fallback_any=True, fallback_value='{model} {pk}')
diff --git a/src/c3nav/mapdata/models/geometry/level.py b/src/c3nav/mapdata/models/geometry/level.py
index 9e94f768..4880cb89 100644
--- a/src/c3nav/mapdata/models/geometry/level.py
+++ b/src/c3nav/mapdata/models/geometry/level.py
@@ -80,6 +80,13 @@ class LevelGeometryMixin(GeometryMixin):
     def register_delete(self):
         changed_geometries.register(self.level_id, self.geometry)
 
+    @classmethod
+    def q_for_request(cls, request, prefix='', allow_none=False):
+        return (
+            super().q_for_request(request, prefix=prefix, allow_none=allow_none) &
+            Level.q_for_request(request, prefix=prefix+'level__', allow_none=allow_none)
+        )
+
     def save(self, *args, **kwargs):
         self.register_change()
         super().save(*args, **kwargs)
diff --git a/src/c3nav/mapdata/models/geometry/space.py b/src/c3nav/mapdata/models/geometry/space.py
index f0bc8509..040ad3f4 100644
--- a/src/c3nav/mapdata/models/geometry/space.py
+++ b/src/c3nav/mapdata/models/geometry/space.py
@@ -11,6 +11,7 @@ from django.utils.translation import ugettext_lazy as _
 from shapely.geometry import CAP_STYLE, JOIN_STYLE, mapping
 
 from c3nav.mapdata.fields import GeometryField, I18nField, JSONField
+from c3nav.mapdata.models import Space
 from c3nav.mapdata.models.base import SerializableMixin
 from c3nav.mapdata.models.geometry.base import GeometryMixin
 from c3nav.mapdata.models.locations import SpecificLocation
@@ -57,6 +58,13 @@ class SpaceGeometryMixin(GeometryMixin):
                                level=space.title)
         return base_subtitle
 
+    @classmethod
+    def q_for_request(cls, request, prefix='', allow_none=False):
+        return (
+            super().q_for_request(request, prefix=prefix, allow_none=allow_none) &
+            Space.q_for_request(request, prefix=prefix + 'space__', allow_none=allow_none)
+        )
+
     def register_change(self, force=True):
         space = self.space
         force = force or self.all_geometry_changed
@@ -277,6 +285,13 @@ class LeaveDescription(SerializableMixin):
     def title(self):
         return self.target_space.title
 
+    @classmethod
+    def q_for_request(cls, request, prefix='', allow_none=False):
+        return (
+            Space.q_for_request(request, prefix='space__', allow_none=allow_none) &
+            Space.q_for_request(request, prefix='target_space__', allow_none=allow_none)
+        )
+
 
 class CrossDescription(SerializableMixin):
     """
@@ -310,6 +325,14 @@ class CrossDescription(SerializableMixin):
     def title(self):
         return '%s → %s' % (self.origin_space.title, self.target_space.title)
 
+    @classmethod
+    def q_for_request(cls, request, prefix='', allow_none=False):
+        return (
+            Space.q_for_request(request, prefix='space__', allow_none=allow_none) &
+            Space.q_for_request(request, prefix='origin_space__', allow_none=allow_none) &
+            Space.q_for_request(request, prefix='target_space__', allow_none=allow_none)
+        )
+
 
 class WifiMeasurement(SpaceGeometryMixin, models.Model):
     """