Unique Estates | Christie’s International Real Estate, established in 2006, is the first company in the luxury real estate sector in Bulgaria, becoming a recognizable market leader. It is part of the Realto Group holding structure with 30+ years of experience in the real estate sector. As the exclusive affiliate of Christie’s International Real Estate in Bulgaria, Unique Estates offers luxury homebuyers and sellers a number of unique benefits and combines local expertise with a globally recognized luxury brand.