diff --git a/layers/building/building.sql b/layers/building/building.sql
index b042f02..8f0c7fe 100644
--- a/layers/building/building.sql
+++ b/layers/building/building.sql
@@ -1,22 +1,13 @@
-CREATE OR REPLACE VIEW building_z13 AS (
-    SELECT osm_id, geometry, height, levels FROM osm_building_polygon_gen1 WHERE area > 1400
-);
-
-CREATE OR REPLACE VIEW building_z14 AS (
-    SELECT osm_id, geometry, height, levels FROM osm_building_polygon
-);
-
 CREATE OR REPLACE FUNCTION layer_building(bbox geometry, zoom_level int)
 RETURNS TABLE(geom geometry, osm_id bigint, render_height numeric) AS $$
     SELECT geometry, osm_id,
     least(greatest(3, COALESCE(height, levels*3.66,5)),400)^.7::int AS render_height
     FROM (
-        SELECT osm_id, ST_Simplify(geometry, 10) AS geometry, height, levels FROM building_z13
-        WHERE zoom_level = 13 AND geometry && bbox
+        SELECT osm_id, geometry, height, levels FROM osm_building_polygon_gen1
+        WHERE zoom_level = 13 AND geometry && bbox AND area > 1400
         UNION ALL
-        SELECT * FROM building_z14
+        SELECT osm_id, geometry, height, levels FROM osm_building_polygon
         WHERE zoom_level >= 14 AND geometry && bbox
     ) AS zoom_levels
     ORDER BY render_height ASC, ST_YMin(geometry) DESC;
 $$ LANGUAGE SQL IMMUTABLE;
-