Specialties Buyer's agent Listing agent Relocation Appraisal The Cooper Group recently joined Berkshire Hathaway HomeService PenFed Realty Mid-Atlantic focused on Luxury Collection properties in Arlington, Fairfax and Loudoun Counties. "I joined BHHS PenFed Realty because it's a high-growth company, has leading edge technology, a premiere brand that opens new doors and opportunities and the Luxury Collection branding and advertising is the best and most powerful in the business, "My focus is on people and what they need, whether it's a client who is moving up with a growing family, downsizing into retirement or buying a first home," said Sheila. "Clients want someone who knows the process, represents their best interest and works to negotiate the highest possible return on their investment."