Download link: http://realestate.ai/blog/43/google-real-estate-maps-wordpress-plugin/
To install:
1) Using FTP, upload the entire google-realestate-maps folder into your wp-content/plugins folder like so: wp-content/plugins/google-realestate-maps/
2) Login to your admin panel and go to your plugins control panel and activate the Google Real Estate Maps Plugin
To configure:
1) Go to the Google Real Estate Maps settings page at: /wp-admin/tools.php?page=google-real-estate-map
2) Add a new map by inputting your city and state.
3) The height & width are optional fields. If left blank a default size will be set.
4) Click "SAVE THIS MAP"
5) Copy "insert code" and paste into pages and post where you want your maps to appear.