Berkshire Hathaway HomeServics The Preferred Realty's Greensburg office is located just below the Westmoreland Mall. (Take Route 30 W past the entrance of Westmoreland Mall to 1st light and turn right.) We service all of Westmoreland County for all of your Real Estate needs. Whether you're buying or selling a home. commercial or investment property, we have over 75 real estate professionals to serve you. We are the #1 Real Estate Company in Westmoreland County with over 1,000 Sales in 2016. Stop in for a free calendar or just to Chat.