The Kogevinas Group has left Berkshire Hathaway HomeServices to join Sotheby’s International Realty – Montecito Brokerage, according to an announcement on Monday. Led by Nancy Kogevinas, the seven-member team was recognized as the No. 36 small team in the nation and the No. 13 small team in California in the 2026 RealTrends Verified rankings, based on 2025 production. The group closed $265.5 million in sales volume in 2025 and 44 transaction sid…