Money might not grow on trees, but green does grow on this tree. Green Tree Servicing is one of the largest servicers of home loans in the US. From about 30 offices around the US, the company performs outsourced collection services and provides loan refinancing services to borrowers and third-party clients. It specializes in so-called "high-touch" loans including subprime residential mortgages, home equity lines of credit, and consumer installment loans. It also has the nation's largest portfolio of manufactured housing loans. The company's portfolio weighs in at some $24 billion. Green Tree is a subsidiary of Walter Investment Management, a company that owns and services mortgages.