It's not just tech companies that can trace their roots back to a garage. According to co-founder Joel Marcus, Alexandria Real Estate Equities (NYSE:ARE) -- a real estate investment trust specializing in life sciences laboratory and office space -- got its start in a garage, too. Since its founding in 1994, Alexandria Real Estate has grown into an $18 billion commercial real estate Goliath with $1.1 billion in annual revenue. Can this company's success continue? I recently spoke with Marcus to learn more about the company and its opportunities.