diff --git a/helix/main.py b/helix/main.py
index 112e57e..5eb8a4c 100644
--- a/helix/main.py
+++ b/helix/main.py
@@ -285,12 +285,11 @@ def array_summary():
             context['summary_values'] = calculator.summary_values()
 
             panels = calculator.get_computed_csv_columns()
+            max_y = project_presenter.get_max_y(calculator.buildings_for_drawing,panels)
             context['panel_array'] = project_presenter.get_panel_data(panels,
                                                               calculator.subarrays,
-                                                              project_presenter.get_max_y(
-                                                                  calculator.buildings_for_drawing,
-                                                                  panels))
-            context['buildings']  =  project_presenter.get_buildings(calculator.buildings_for_drawing)
+                                                              max_y)
+            context['buildings']  =  project_presenter.get_buildings(calculator.buildings_for_drawing, max_y)
             context['override_form'] = True
             context['cad_file_name'] = session_manager.site.cad_file_name or 'Upload System Text Data'
             context['dxf_file_name'] = session_manager.site.dxf_file_name or 'Upload System DXF'
diff --git a/helix/presenters/panel_presenter.py b/helix/presenters/panel_presenter.py
index d328498..b98b2ba 100644
--- a/helix/presenters/panel_presenter.py
+++ b/helix/presenters/panel_presenter.py
@@ -50,9 +50,10 @@ class ProjectPresenter(object):
         self.offset = height
         for panel in table_data:
             panel['y'] = height - panel['y'] + first_cell
+
         return table_data
 
-    def get_buildings(self, buildings):
+    def get_buildings(self, buildings, max_y):
         if self.offset is None:
             self.offset = 0
 
@@ -67,7 +68,7 @@ class ProjectPresenter(object):
             # origin = self.find_origin(building)
             for point in building:
                 point.x = point.x * spacing_x
-                point.y = point.y * spacing_y
+                point.y = abs((point.y * spacing_y - max_y))
                 presentable_building.append(point.__dict__)
 
         return result
diff --git a/test/helpers/panel_presenter_test.py b/test/helpers/panel_presenter_test.py
index cbd5f81..fe565df 100644
--- a/test/helpers/panel_presenter_test.py
+++ b/test/helpers/panel_presenter_test.py
@@ -66,14 +66,14 @@ class PanelPresenterTest(unittest.TestCase):
 
     def test_get_buildings_data(self):
         self.subject = ProjectPresenter(SystemType.singleTilt, ModuleType.Cell96)
-        buildings = [ [ Coordinate(-60,-60), Coordinate(60,-60), Coordinate(60,60), Coordinate(-60,60)  ] ] # big square
+        buildings = [ [ Coordinate(0,0), Coordinate(60,0), Coordinate(60,60), Coordinate(0,60)  ] ] # big square
         expected_buildings = [[         
-          {'x': -60, '_Coordinate__rounded_x': -60, 'y': -60, '_Coordinate__rounded_y': -60, 'rotation': 0.0},
-          {'x':  60, '_Coordinate__rounded_x':  60, 'y': -60, '_Coordinate__rounded_y': -60, 'rotation': 0.0},
-          {'x':  60, '_Coordinate__rounded_x':  60, 'y':  60, '_Coordinate__rounded_y':  60, 'rotation': 0.0},
-          {'x': -60, '_Coordinate__rounded_x': -60, 'y':  60, '_Coordinate__rounded_y':  60, 'rotation': 0.0}
+          {'x': 0,  '_Coordinate__rounded_x': 0,  'y': 60,  '_Coordinate__rounded_y': 0, 'rotation': 0.0},
+          {'x': 60, '_Coordinate__rounded_x': 60, 'y': 60,  '_Coordinate__rounded_y': 0, 'rotation': 0.0},
+          {'x': 60, '_Coordinate__rounded_x': 60, 'y': 0, '_Coordinate__rounded_y': 60,  'rotation': 0.0},
+          {'x': 0,  '_Coordinate__rounded_x': 0,  'y': 0, '_Coordinate__rounded_y': 60,  'rotation': 0.0}
         ]]
-        actual_buildings = self.subject.get_buildings(buildings)
+        actual_buildings = self.subject.get_buildings(buildings,60)
         assert_array_equal(actual_buildings,expected_buildings)
 
     def test_get_max_y(self):