BuildingConnected, which provides software linking contractors and developers, has raised $15 million from a strategic investor — Brookfield Ventures, the new venture arm from real estate developer Brookfield Asset Management. Previous investors in the company include Crosslink Capital, Brick & Mortar Ventures, Freestyle Capital, Homebrew, Bee Partners, and Lightspeed Venture Partners. More than $80 billion of new construction projects are posted to the company’s platform, where roughly 170,000 small business owners, general contractors and subcontractors are now pitching their services. And BuildingConnected counts owners and developers such as Brookfield, Panera Bread, UCSF and Duke Realty as customers. More than 300 Brookfield projects have used the BuildingConnected marketplace for jobs ranging from $50,000 remodeling contracts to $900 million office towers.