diff --git a/application/ADBWohneinheit/ADBWohneinheit.php b/application/ADBWohneinheit/ADBWohneinheit.php
index 363449209..1dcfe0aad 100644
--- a/application/ADBWohneinheit/ADBWohneinheit.php
+++ b/application/ADBWohneinheit/ADBWohneinheit.php
@@ -65,6 +65,8 @@ class ADBWohneinheit extends mfBaseModel {
                               $gda_egenschaft = strtolower($hausnummer->rimo_type);
                           }
 
+                          if(strtolower($gda_egenschaft) == "greenfield") continue;
+
                           if(!$gda_egenschaft) {
                               $unit_count_gda["sd"] += $hausnummer->unit_count;
                               continue;
@@ -107,11 +109,13 @@ class ADBWohneinheit extends mfBaseModel {
                 $old_status = new ADBStatus($this->_old_data->status_id);
                 $new_status = new ADBStatus($this->data->status_id);
                 $logstr .= "| '$key' => FROM '".$this->_old_data->$key."' TO '".$this->data->$key."' [".$old_status->code." => ".$new_status->code."]";
-            } elseif($key = "external_data" && $this->_old_data->external_data && $this->external_data) {
+            } elseif($key == "external_data" && $this->_old_data->external_data && $this->external_data) {
                 $old_data = json_decode($this->_old_data->external_data);
                 $new_data = json_decode($this->external_data);
                 if(json_encode($old_data) !== json_encode($new_data)) {
                     $logstr .= "| '$key' => FROM '".$this->_old_data->$key."' TO '".$this->data->$key."'";
+                } else {
+                    continue;
                 }
             } else {
                 $logstr .= "| '$key' => FROM '".$this->_old_data->$key."' TO '".$this->data->$key."'";