Index: /trunk/src/org/openstreetmap/josm/data/validation/tests/RightAngleBuildingTest.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/validation/tests/RightAngleBuildingTest.java	(revision 15280)
+++ /trunk/src/org/openstreetmap/josm/data/validation/tests/RightAngleBuildingTest.java	(revision 15281)
@@ -43,5 +43,5 @@
     @Override
     public void visit(Way w) {
-        if (!w.isUsable() || !w.isClosed() || !isBuilding(w)) return;
+        if (!w.isUsable() || !w.isClosed() || !isBuilding(w) || !IN_DOWNLOADED_AREA_STRICT.test(w)) return;
 
         List<Pair<Double, Node>> angles = w.getAngles();