diff --git a/packages/strapi-plugin-i18n/config/functions/register.js b/packages/strapi-plugin-i18n/config/functions/register.js
index 24e593da5c..d923fec908 100644
--- a/packages/strapi-plugin-i18n/config/functions/register.js
+++ b/packages/strapi-plugin-i18n/config/functions/register.js
@@ -1,22 +1,27 @@
 'use strict';
 
 const _ = require('lodash');
-const pluralize = require('pluralize');
+
 const { getService } = require('../../utils');
 
 module.exports = () => {
-  Object.values(strapi.contentTypes).forEach(model => {
-    if (getService('content-types').isLocalized(model)) {
-      _.set(model.attributes, 'localizations', {
+  const contentTypeService = getService('content-types');
+  const coreApiService = getService('core-api');
+
+  Object.values(strapi.contentTypes).forEach(contentType => {
+    if (contentTypeService.isLocalized(contentType)) {
+      const { attributes, modelName } = contentType;
+
+      _.set(attributes, 'localizations', {
         writable: true,
         private: false,
         configurable: false,
         visible: false,
-        collection: model.modelName,
+        collection: modelName,
         populate: ['id', 'locale', 'published_at'],
       });
 
-      _.set(model.attributes, 'locale', {
+      _.set(attributes, 'locale', {
         writable: true,
         private: false,
         configurable: false,
@@ -24,34 +29,7 @@ module.exports = () => {
         type: 'string',
       });
 
-      // add new route
-      const route =
-        model.kind === 'singleType'
-          ? _.kebabCase(model.modelName)
-          : _.kebabCase(pluralize(model.modelName));
-
-      const localizationRoutes = [
-        {
-          method: 'POST',
-          path: `/${route}/:id/localizations`,
-          handler: `${model.modelName}.createLocalization`,
-          config: {
-            policies: [],
-          },
-        },
-      ];
-
-      const handler = function(ctx) {
-        ctx.body = 'works';
-      };
-
-      strapi.config.routes.push(...localizationRoutes);
-
-      _.set(
-        strapi,
-        `api.${model.apiName}.controllers.${model.modelName}.createLocalization`,
-        handler
-      );
+      coreApiService.addCreateLocalizationAction(contentType);
     }
   });
 
diff --git a/packages/strapi-plugin-i18n/services/core-api.js b/packages/strapi-plugin-i18n/services/core-api.js
new file mode 100644
index 0000000000..6c1f7e2d9e
--- /dev/null
+++ b/packages/strapi-plugin-i18n/services/core-api.js
@@ -0,0 +1,54 @@
+'use strict';
+
+const { set } = require('lodash');
+const { getContentTypeRoutePrefix } = require('strapi-utils').contentTypes;
+
+/**
+ * Returns a handler to handle localizations creation in the core api
+ * @param {object} contentType
+ * @returns ((oject) => {})
+ */
+const createLocalizationHandler = contentType => {
+  return function(ctx) {
+    ctx.body = 'works';
+  };
+};
+
+/**
+ * Returns a route config to handle localizations creation in the core api
+ * @param {object} contentType
+ * @returns {{ method: string, path: string, handler: string, config: { policies: string[] }}}
+ */
+const createLocalizationRoute = contentType => {
+  const { modelName } = contentType;
+
+  return {
+    method: 'POST',
+    path: `/${getContentTypeRoutePrefix(contentType)}/:id/localizations`,
+    handler: `${modelName}.createLocalization`,
+    config: {
+      policies: [],
+    },
+  };
+};
+
+/**
+ * Adds a route & an action to the core api controller of a content type to allow creating new localizations
+ * @param {object} contentType
+ */
+const addCreateLocalizationAction = contentType => {
+  const { modelName, apiName } = contentType;
+
+  const localizationRoute = createLocalizationRoute(contentType);
+
+  const coreApiControllerPath = `api.${apiName}.controllers.${modelName}.createLocalization`;
+  const handler = createLocalizationHandler(contentType);
+
+  strapi.config.routes.push(localizationRoute);
+
+  set(strapi, coreApiControllerPath, handler);
+};
+
+module.exports = {
+  addCreateLocalizationAction,
+};
diff --git a/packages/strapi-utils/lib/content-types.js b/packages/strapi-utils/lib/content-types.js
index aaef80cd19..1f08b8d846 100644
--- a/packages/strapi-utils/lib/content-types.js
+++ b/packages/strapi-utils/lib/content-types.js
@@ -1,6 +1,7 @@
 'use strict';
 
 const _ = require('lodash');
+const pluralize = require('pluralize');
 
 const SINGLE_TYPE = 'singleType';
 const COLLECTION_TYPE = 'collectionType';
@@ -190,6 +191,17 @@ const getGlobalId = (model, modelName, prefix) => {
 const isRelationalAttribute = attribute =>
   _.has(attribute, 'model') || _.has(attribute, 'collection');
 
+/**
+ *  Returns a route prefix for a contentType
+ * @param {object} contentType
+ * @returns {string}
+ */
+const getContentTypeRoutePrefix = contentType => {
+  return isSingleType(contentType)
+    ? _.kebabCase(contentType.modelName)
+    : _.kebabCase(pluralize(contentType.modelName));
+};
+
 module.exports = {
   isScalarAttribute,
   isMediaAttribute,
@@ -211,4 +223,5 @@ module.exports = {
   isKind,
   createContentType,
   getGlobalId,
+  getContentTypeRoutePrefix,
 };