diff --git a/src/Data.js b/src/Data.js
index 44edbce..77a66e9 100644
--- a/src/Data.js
+++ b/src/Data.js
@@ -32,30 +32,14 @@ class Flat {
         return room ? this.sizeShared / this.numPeople * room.numPeople : 0;
     }
 
-    // Calculates the share of the project wide common area
-    // the party has to pay for.
-    // Currently done by number of people in the party.
-    calcCommonAreaShare(room = null) {
-        var numPeople;
-        if (room) {
-            numPeople = room.numPeople;
-        } else {
-            numPeople = this.numRooms;
-        }
-
-        return commonArea / numPeopleTotal * numPeople;
-    }
-
     // Calculates the total area the party has to pay for
-    // Includes the private area, share of the common area and for
-    // WGs and clusters the share of the internal shared area
+    // Includes the private area and if applicable share of 
+    // the internal common area of WGs and cluster flats
     calcTotalPayedArea(room = null) {
-        var commonAreaShare = this.calcCommonAreaShare(room);
-
         if (!room) {
-            return this.sizePrivate + commonAreaShare;
+            return this.sizePrivate;
         } else {
-            return room.size + commonAreaShare + this.calcInternalAreaShare(room);
+            return room.size + this.calcInternalAreaShare(room);
         }
     }
 }
@@ -129,8 +113,6 @@ const addedCost = 1.2;
 export const minRent = 9.45 + addedCost;
 export const maxRent = 13.06 + addedCost;
 
-const commonArea = 388.80;
-
 // Calculate total number of people
 var _numPeople = 0;
 
diff --git a/src/Solimieten.js b/src/Solimieten.js
index c977e03..289324e 100644
--- a/src/Solimieten.js
+++ b/src/Solimieten.js
@@ -103,24 +103,33 @@ export function FlatDetailsCard({ flat, room }) {
 
         var sizeSharedBox = null;
 
-        var commonAreaShare = flat.calcCommonAreaShare(room);
         var internalAreaShare = flat.calcInternalAreaShare(room);
+        var totalSizeToPay = flat.calcTotalPayedArea(room);
 
         if (flat.wgRoomList.length > 0) {
 
-            sizeSharedBox = <Box>
-                <Heading size='xs' textTransform='uppercase'>
-                    Interne Gemeinschaftsfläche
-                </Heading>
-                <Text pt='2' fontSize='sm'>
-                    {flat.sizeShared.toFixed(2)} m²
-                </Text>
-            </Box>;
+            sizeSharedBox = [
+                <Box>
+                    <Heading size='xs' textTransform='uppercase'>
+                        Anteil Interne Gemeinschaftsfläche (WG und Cluster)
+                    </Heading>
+                    <Text pt='2' fontSize='sm'>
+                        {internalAreaShare.toFixed(2)} m²
+                    </Text>
+                </Box >,
+                <Box>
+                    <Heading size='xs' textTransform='uppercase'>
+                        Zahlfläche
+                    </Heading>
+                    <Text pt='2' fontSize='sm'>
+                        {sizePrivate.toFixed(2)} m² + {internalAreaShare.toFixed(2)} m² (WG/Cluster-Fläche)
+                    </Text>
+                    <Text pt={3} size='s' fontWeight='bold'>Gesamt: {totalSizeToPay.toFixed(2)} m² </Text>
+                </Box>
+            ];
 
         }
 
-        var totalSizeToPay = flat.calcTotalPayedArea(room);
-
         body = <CardBody>
 
             <Stack divider={<StackDivider />} spacing='4'>
@@ -135,34 +144,18 @@ export function FlatDetailsCard({ flat, room }) {
                 </Box>
                 <Box>
                     <Heading size='xs' textTransform='uppercase'>
-                        Zimmeranzahl
+                        Zimmeranzahl und Gesamtfläche
                     </Heading>
                     <Text pt='2' fontSize='sm'>
-                        {flat.numRooms}
+                        {flat.numRooms} Zimmer, {flat.sizePrivate.toFixed(2)} m²
                     </Text>
                 </Box>
                 {sizeSharedBox}
-                <Box>
-                    <Heading size='xs' textTransform='uppercase'>
-                        Anteil Gemeinschaftsfläche
-                    </Heading>
-                    <Text pt='2' fontSize='sm'>
-                        {commonAreaShare.toFixed(2)} m² {internalAreaShare ? ("(Allmendefläche) + " + internalAreaShare.toFixed(2) + " m² (WG/Cluster-Fläche)") : ""}
-                    </Text>
-                </Box>
-                <Box>
-                    <Heading size='xs' textTransform='uppercase'>
-                        Zahlfläche
-                    </Heading>
-                    <Text pt='2' fontSize='sm'>
-                        {sizePrivate.toFixed(2)} m² + {commonAreaShare.toFixed(2)} m² (Allmendefläche) {internalAreaShare ? " + " + (internalAreaShare.toFixed(2) + " m² (WG/Cluster-Fläche)") : null}
-                    </Text>
-                    <Text pt={3} size='s' fontWeight='bold'>Gesamt: {totalSizeToPay.toFixed(2)} m² </Text>
-                </Box>
                 <Box>
                     <Heading size='xs' textTransform='uppercase'>
                         Mindestmiete
                     </Heading>
+                    <Text fontSize="xs">Die Mindestmiete ergibt sich aus dem WBS Satz für die private Fläche (4,45 €/m²), den Nebenkosten (1,20 €/m²) und der Küchen-Nutzungspauschale von 50€ pro Küche</Text>
                     <Text pt='2' fontSize='m' fontWeight='bold'>
                         {((sizePrivate + internalAreaShare) * minRent + 50).toFixed(2)} €
                     </Text>