diff --git a/README.md b/README.md
index b88f3c3..552565d 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ npx expo install react-native-maps@1.9.0
 npm install react-native-maps @react-navigation/native @react-navigation/bottom-tabs react-native-safe-area-context react-native-screens firebase
 npm install @react-native-community/datetimepicker
 
-npx expo install expo-image-picker 
+npx expo install expo-image-picker
+npx expo install expo-location 
 
 npx expo start
\ No newline at end of file
diff --git a/app/(tabs)/mapScreen.tsx b/app/(tabs)/mapScreen.tsx
index a9a8f54..98bc626 100644
--- a/app/(tabs)/mapScreen.tsx
+++ b/app/(tabs)/mapScreen.tsx
@@ -1,11 +1,15 @@
 // MapScreen.tsx
 import { ThemedMapView } from '@/components/theme/themed-mapview';
+import { ThemedText } from '@/components/theme/themed-text';
+import { ThemedButton } from '@/components/theme/themed-button';
 import React, { useEffect, useState } from 'react';
 import { StyleSheet, View, Dimensions, Image, Text } from 'react-native';
 import MapView, { Marker, Callout, CalloutSubview, PROVIDER_DEFAULT } from 'react-native-maps';
 import { db } from '../../firebase_config';
 import { Chantier } from '@/class/class';
 import { getChantiers } from '@/services/ressourcesService';
+import { useLocation } from '@/hooks/useLocation';
+
 
 
 const MapScreen = () => {
@@ -20,21 +24,30 @@ const region = {
 
   const [chantiers, setMarkers] = useState<Chantier[]>([]);
   const [loading, setLoading] = useState(true);
+  const [refreshing, setRefreshing] = useState(false);
 
- useEffect(() => {
-    async function loadData() {
+
+      async function loadData() {
       try {
+        setRefreshing(true)
         const data = await getChantiers();
+        console.log("Chantiers chargés:", data.length);
+        console.log("📍 Premier chantier:", data[-1]);
+        console.log("🗺️ Coordonnées:", data[-1]?.latitude, data[-1]?.longitude);
         setMarkers(data);
       } catch (error) {
         console.error("Erreur lors du chargement :", error);
       } finally {
         setLoading(false);
+        setRefreshing(false);
       }
     }
+ useEffect(() => {
     loadData();
   }, []);
 
+  console.log("🔄 Render - Nombre de chantiers:", chantiers.length);
+
   return (
     <View style={styles.container}>
       <ThemedMapView
@@ -44,14 +57,24 @@ const region = {
       >
         {Array.isArray(chantiers) &&
         chantiers.map(chantier => (
+          
           <Marker
             key = {chantier.id}
-            coordinate={{ latitude: chantier.latitude, longitude: chantier.longitude }}
+            coordinate={{ latitude: chantier.latitude, longitude: chantier.longitude}}
             title={chantier.adresse}
             description={chantier.etat}
           />
         ))}
       </ThemedMapView>
+        <ThemedButton
+          lvl={1}
+          shadow={true}
+          style={styles.refreshButton}
+          onPress={() => loadData()}
+          disabled={refreshing}
+          >
+          <ThemedText>Actualiser</ThemedText>
+          </ThemedButton>
     </View>
   );
 };
@@ -64,6 +87,13 @@ const styles = StyleSheet.create({
     width: Dimensions.get('window').width,
     height: Dimensions.get('window').height,
   },
+  refreshButton: {
+    position: 'absolute',
+    top: 50,
+    right: 20,
+    padding: 15,
+    borderRadius: 8,
+  },
 });
 
 export default MapScreen;
diff --git a/components/add/addChantier.tsx b/components/add/addChantier.tsx
index 918e04c..24cafb8 100644
--- a/components/add/addChantier.tsx
+++ b/components/add/addChantier.tsx
@@ -20,6 +20,8 @@ import SelectRessource from '@/components/add/select/selectRessource';
 import { db } from '@/firebase_config';
 import { doc } from 'firebase/firestore';
 
+import { useLocation } from '@/hooks/useLocation';
+
 type RessourcesQte = [Ressources, number];
 
 //Uniquement accessible par le RESPONSSABLE du chantier
@@ -28,6 +30,7 @@ export default function AddChantier() {
   const { chantier, setChantier } = useChantier();
   const { user, setUser } = useUser();
   const { ressources, setRessources } = useRessources();
+  const { geocodeAddress} = useLocation();
   
   const [editMode,setEditMode] = useState(false);
 
@@ -62,6 +65,16 @@ export default function AddChantier() {
   };
   async function onConfirm(): Promise<void> {
         if (!isValidChantier() || !chefChantier) return;
+        try {
+          setLoading(true);
+          const coords = await geocodeAddress(adresse);
+    
+        if (!coords) {
+          console.error("Impossible de géocoder l'adresse");
+          alert("Adresse introuvable. Veuillez vérifier l'adresse.");
+          setLoading(false);
+          return;
+        }
         const chantierDate = new Date(date);
         chantierDate.setHours(morning ? 0 : 12, 0, 0, 0);
         //CREATE NEW TYPE CHANTIER FOR FIRESTORE
@@ -80,8 +93,8 @@ export default function AddChantier() {
           anomalies: [],
           dateDep: chantierDate,
           tempsEst: parseInt(duree) || 1,
-          latitude: 0, //TODO
-          longitude: 0, //TODO
+          latitude: coords.latitude, //TODO
+          longitude: coords.longitude, //TODO
         };
       const id = await addChantier(chantierFirestore as any);
       if (id) {
@@ -95,7 +108,13 @@ export default function AddChantier() {
         } as Chantier);
         setOpenConfirmation(false);
       }
-    }
+    } catch (error) {
+    console.error("Erreur lors de la création du chantier:", error);
+    alert("Erreur lors de la création du chantier");
+  } finally {
+    setLoading(false);
+  }
+}
 
   function onCancel(): void {
     setOpenConfirmation(false);
diff --git a/hooks/useLocation.tsx b/hooks/useLocation.tsx
new file mode 100644
index 0000000..bbb288b
--- /dev/null
+++ b/hooks/useLocation.tsx
@@ -0,0 +1,50 @@
+import { useState } from 'react';
+import * as Location from 'expo-location';
+
+
+export const useLocation = () => {
+  const [errorMsg, setErrorMsg] = useState<string | null>(null);
+  const [latitude, setLatitude] = useState<number | null>(null);
+  const [longitude, setLongitude] = useState<number | null>(null);
+  const [loading, setLoading] = useState(false);
+
+
+  const geocodeAddress = async (address: string) => {
+    try {
+      setLoading(true);
+      setErrorMsg(null);
+
+      const { status } = await Location.requestForegroundPermissionsAsync();
+
+      if (status !== 'granted') {
+        throw new Error('Permission localisation refusée');
+      }
+      const result = await Location.geocodeAsync(address);
+
+      if (!result || result.length === 0) {
+        throw new Error("Adresse introuvable");
+      }
+
+      const { latitude, longitude } = result[0];
+
+      setLatitude(latitude);
+      setLongitude(longitude);
+
+      return { latitude, longitude };
+    } catch (error: any) {
+      console.error(error);
+      setErrorMsg("Impossible de localiser cette adresse");
+      return null;
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return {
+    latitude,
+    longitude,
+    errorMsg,
+    loading,
+    geocodeAddress,
+  };
+};