Coldwell Banker Residential Real Estate’s Roger Pettingell recently attended the International Luxury Alliance Network event held in New York City. The event was hosted by NRT LLC, the nation’s largest residential real estate brokerage company and the parent company of Coldwell Banker Residential Real Estate. Pettingell was joined by luxury marketing experts from North America and Europe affiliated with Coldwell Banker and The Corcoran Group, the leading residential real estate brokerage company headquartered in New York City. In total, the group represented more than $2.5 billion in sales volume in luxury real estate sales.