Bregal Sagemount, a private equity firm, agreed to invest in BuildingLink, a provider of operations and resident engagement software for luxury residential properties worldwide. Financial terms were not disclosed. “We are thrilled to be partnering with Sagemount as we enter our next stage of growth. With their support and deep industry expertise, we will be well-positioned to further invest in our current offerings and to continue to grow both domestically and internationally. We have a long history of delighting property managers, and this investment will enable us to take that to the next level," Zachary Kestenbaum, BuildingLink CEO.