www.redfin.com), the technology-powered real estate brokerage, announced it has expanded its Redfin Premier offering for high-end home sellers into some of the nation's top luxury markets: Lake Tahoe, Los Angeles, Santa Barbara, San Francisco, Seattle and Washington, D.C. A Redfin Premier home listing. The brokerage also announced it is enhancing the Redfin Premier service by adding HD video tours for every Premier Home and expanding advertising for Premier Homes on social media and other digital media sites to reach both domestic and international luxury home buyers, including: The Wall Street Journal, Bloomberg, MarketWatch, Barron's, Mansion Global, and