diff --git a/platform/install.provision.inc b/platform/install.provision.inc
index adfe6a3..95559f0 100644
--- a/platform/install.provision.inc
+++ b/platform/install.provision.inc
@@ -19,7 +19,35 @@ function drush_provision_drupal_provision_install_validate() {
     return drush_set_error("PROVISION_URL_REQUIRED", dt("You need to specify a valid url to install a site"));
   }
   if (_provision_drupal_site_exists()) {
-    return drush_set_error('PROVISION_SITE_INSTALLED');
+
+    // If "force-reinstall" option is set, delete the database and files.
+    if (drush_get_option('force-reinstall', FALSE)) {
+
+      drush_log(dt('Forcing reinstall...'), 'ok');
+
+      // Load the current database name from drushrc.php.
+      // I cannot find another way to find the current db_name!
+      require_once(d()->site_path . '/drushrc.php');
+      $old_db_name = $options['db_name'];
+
+      if (d()->service('db')->database_exists($old_db_name)) {
+        d()->service('db')->drop_database($old_db_name);
+        drush_log(dt('Dropped database @database.', array(
+          '@database' => $old_db_name,
+        )), 'ok');
+      }
+
+      // Destroy site_path.
+      if (file_exists(d()->site_path)) {
+        _provision_recursive_delete( d()->site_path );
+        drush_log(dt('Deleted @site_path.', array('@site_path' => d()->site_path)), 'ok');
+      }
+    }
+
+    // Check again if site does not exist after the forced reinstall.
+    if (_provision_drupal_site_exists()) {
+      return drush_set_error('PROVISION_SITE_INSTALLED');
+    }
   }
 }
 
diff --git a/provision.drush.inc b/provision.drush.inc
index 8331e41..f417a8e 100644
--- a/provision.drush.inc
+++ b/provision.drush.inc
@@ -113,6 +113,7 @@ function provision_drush_command() {
     'options' => array(
       'client_email' => dt('The email address of the client to use.'),
       'profile' => dt('The profile to use when installing the site.'),
+      'force-reinstall' => dt('Delete the sites database and files, before attempting to install.'),
     ),
     'allow-additional-options' => TRUE,
     'bootstrap' => DRUSH_BOOTSTRAP_DRUPAL_ROOT