diff --git a/frontend/src/lib/utils/defaults.js b/frontend/src/lib/utils/defaults.js
index dea41b7..7ba14c1 100644
--- a/frontend/src/lib/utils/defaults.js
+++ b/frontend/src/lib/utils/defaults.js
@@ -117,3 +117,62 @@ export function defaultSupporter() {
 	supporter.membership.subscription_model.name = SUPPORTER_SUBSCRIPTION_MODEL_NAME;
 	return supporter;
 }
+
+/**
+ * @returns {App.Types['location']}
+ */
+export function defaultLocation() {
+	return {
+		latitude: 0,
+		longitude: 0
+	};
+}
+
+/**
+ * @returns {App.Types['damage']}
+ */
+export function defaultDamage() {
+	return {
+		id: 0,
+		opponent: defaultUser(),
+		insurance: null,
+		notes: ''
+	};
+}
+
+/**
+ * @returns {App.Types['insurance']}
+ */
+export function defaultInsurance() {
+	return {
+		id: 0,
+		company: '',
+		reference: '',
+		start_date: '',
+		end_date: '',
+		notes: ''
+	};
+}
+
+/**
+ * @returns {App.Types['car']}
+ */
+export function defaultCar() {
+	return {
+		id: 0,
+		name: '',
+		status: '',
+		brand: '',
+		model: '',
+		price: 0,
+		rate: 0,
+		start_date: '',
+		end_date: '',
+		color: '',
+		licence_plate: '',
+		location: defaultLocation(),
+		damages: [],
+		insurances: [],
+		notes: ''
+	};
+}