diff --git a/src/Lw/TYPO3CMSInstallers/TYPO3CMSCoreInstaller.php b/src/Lw/TYPO3CMSInstallers/TYPO3CMSCoreInstaller.php
index a8437c6..f8dca03 100644
--- a/src/Lw/TYPO3CMSInstallers/TYPO3CMSCoreInstaller.php
+++ b/src/Lw/TYPO3CMSInstallers/TYPO3CMSCoreInstaller.php
@@ -16,11 +16,13 @@
  */
 class TYPO3CMSCoreInstaller extends LibraryInstaller {
 
+	const DEFAULT_INSTALL_CORE_PATH = 'typo3_src';
+
 	/**
 	 * {@inheritDoc}
 	 */
 	public function getPackageBasePath(PackageInterface $package) {
-		return 'typo3_src';
+		return $this->getInstallationPath();
 	}
 
 	/**
@@ -29,5 +31,18 @@ public function getPackageBasePath(PackageInterface $package) {
 	public function supports($packageType) {
 		return ('typo3cms-core' === $packageType);
 	}
+
+	/**
+	 * Get the installation path from composer.json "extra" section
+	 * or the default path 'typo3conf/ext/'
+	 *
+	 * @return string
+	 */
+	protected function getInstallationPath() {
+		$extra = $this->composer->getPackage()->getExtra();
+
+		return isset($extra['typo3-cms-core-installer-path']) ?
+			$extra['typo3-cms-core-installer-path'] : self::DEFAULT_INSTALL_CORE_PATH;
+	}
 }
-?>
\ No newline at end of file
+?>
diff --git a/src/Lw/TYPO3CMSInstallers/TYPO3CMSExtensionInstaller.php b/src/Lw/TYPO3CMSInstallers/TYPO3CMSExtensionInstaller.php
index 56eb974..84b6fd2 100644
--- a/src/Lw/TYPO3CMSInstallers/TYPO3CMSExtensionInstaller.php
+++ b/src/Lw/TYPO3CMSInstallers/TYPO3CMSExtensionInstaller.php
@@ -8,7 +8,6 @@
 use Composer\Util\Filesystem;
 use Dkd\Downloader\T3xDownloader;
 
-
 /**
  * Installer for TYPO3 CMS
  *
@@ -16,6 +15,8 @@
  */
 class TYPO3CMSExtensionInstaller extends LibraryInstaller {
 
+	const DEFAULT_INSTALL_EXTENSION_PATH = 'typo3conf/ext/';
+
 	public function __construct(IOInterface $io, Composer $composer, $type = 'library', Filesystem $filesystem = null) {
 		parent::__construct($io, $composer, $type, $filesystem);
 
@@ -27,7 +28,7 @@ public function __construct(IOInterface $io, Composer $composer, $type = 'librar
 	 */
 	public function getPackageBasePath(PackageInterface $package) {
 		$extensionName = explode('/', $package->getName());
-		return 'typo3conf/ext/' . array_pop($extensionName);
+		return $this->getInstallationPath() . array_pop($extensionName);
 	}
 
 	/**
@@ -36,5 +37,18 @@ public function getPackageBasePath(PackageInterface $package) {
 	public function supports($packageType) {
 		return ('typo3cms-extension' === $packageType);
 	}
+
+	/**
+	 * Get the installation path from composer.json "extra" section
+	 * or the default path 'typo3conf/ext/'
+	 *
+	 * @return string
+	 */
+	protected function getInstallationPath() {
+		$extra = $this->composer->getPackage()->getExtra();
+
+		return isset($extra['typo3-cms-extension-installer-path']) ?
+			$extra['typo3-cms-extension-installer-path'] : self::DEFAULT_INSTALL_EXTENSION_PATH;
+	}
 }
-?>
\ No newline at end of file
+?>