diff --git a/core/model/SiteTree.php b/core/model/SiteTree.php
index e0ade7daa..7fb455f69 100755
--- a/core/model/SiteTree.php
+++ b/core/model/SiteTree.php
@@ -168,6 +168,11 @@ class SiteTree extends DataObject implements PermissionProvider,i18nEntityProvid
 	 */
 	public static $breadcrumbs_delimiter = " » ";
 	
+	/**
+	 * Whether or not to write the homepage map for static publisher
+	 */
+	public static $write_homepage_map = true;
+	
 	static $searchable_fields = array(
 		'Title',
 		'Content',
@@ -1982,13 +1987,34 @@ class SiteTree extends DataObject implements PermissionProvider,i18nEntityProvid
 			}
 		}
 		
+		// Check to write CMS homepage map.
+		$usingStaticPublishing = false;
+		foreach(ClassInfo::subclassesFor('StaticPublisher') as $class) if ($this->hasExtension($class)) $usingStaticPublishing = true;
 
+		// NOTE: if you change the path here, you must also change it in sapphire/static-main.php
+		if (self::$write_homepage_map) {
+			if ($usingStaticPublishing && $map = self::generate_homemage_domain_map()) {
+				@file_put_contents(BASE_PATH.'/'.ASSETS_DIR.'/_homepage-map.php', "<?php\n\$homepageMap = ".var_export($map, true)."; ?>");
+			} else { if (file_exists(BASE_PATH.'/'.ASSETS_DIR.'/_homepage-map.php')) unlink(BASE_PATH.'/'.ASSETS_DIR.'/_homepage-map.php'); }
+		}
+		
 		// Handle activities undertaken by decorators
 		$this->extend('onAfterPublish', $original);
 		
 		return true;
 	}
 	
+	static function generate_homepage_domain_map() {
+		$domainSpecificHomepages = Versioned::get_by_stage('Page', 'Live', "HomepageForDomain != ''", 'URLSegment ASC');
+		if (!$domainSpecificHomepages) return false;
+		
+		$map = array();
+		foreach($domainSpecificHomepages->map('URLSegment', 'HomepageForDomain') as $url => $domains) {
+			foreach(explode(',', $domains) as $domain) $map[$domain] = $url;
+		}
+		return $map;
+	}
+	
 	/**
 	 * Unpublish this page - remove it from the live site
 	 * 
diff --git a/static-main.php b/static-main.php
index 45d403817..bcde77f2e 100644
--- a/static-main.php
+++ b/static-main.php
@@ -16,13 +16,14 @@
 $cacheOn = true;
 $cacheDebug = false;
 $hostmapLocation = '../subsites/host-map.php';
+$homepageMapLocation = '../assets/_homepage-map.php';
 date_default_timezone_set('Pacific/Auckland');
 
 if ($cacheOn && empty($_COOKIE['bypassStaticCache'])) {
 	if (file_exists($hostmapLocation)) {
 		include_once $hostmapLocation;
 		$subsiteHostmap['default'] = isset($subsiteHostmap['default']) ? $subsiteHostmap['default'] : '';
-	
+
 		// Look for the host, and find the cache dir
 		$host = str_replace('www.', '', $_SERVER['HTTP_HOST']);
 		$cacheDir = (isset($subsiteHostmap[$host]) ? $subsiteHostmap[$host] : $subsiteHostmap['default']) . '/';
@@ -31,16 +32,24 @@ if ($cacheOn && empty($_COOKIE['bypassStaticCache'])) {
 	}
 
 	// Look for the file in the cachedir
-	$file = preg_replace('/[^a-zA-Z0-9]/si', '_', trim($_SERVER['REQUEST_URI'], '/'));
+	$file = trim($_SERVER['REQUEST_URI'], '/');
 	$file = $file ? $file : 'index';
-	
+
+	// Route to the 'correct' index file (if applicable)
+	if ($file == 'index' && file_exists($homepageMapLocation)) {
+		include_once $homepageMapLocation;
+		$file = isset($homepageMap[$_SERVER['HTTP_HOST']]) ? $homepageMap[$_SERVER['HTTP_HOST']] : $file;
+	}
+
+	$file = preg_replace('/[^a-zA-Z0-9]/si', '_', $file);
+
 	if (file_exists('../cache/'.$cacheDir.$file.'.html')) {
 		header('X-cache: hit at '.@date('r'));
 		echo file_get_contents('../cache/'.$cacheDir.$file.'.html');
 	} elseif (file_exists('../cache/'.$cacheDir.$file.'.php')) {
 		header('X-cache: hit at '.@date('r'));
 		include_once '../cache/'.$cacheDir.$file.'.php';
-		if ($cacheDebug) echo "<h1>File was cached</h1>";
+	if ($cacheDebug) echo "<h1>File was cached</h1>";
 	} else {
 		header('X-cache: miss at '.@date('r') . ' on ' . $cacheDir . $file);
 		// No cache hit... fallback!!!