LA JOLLA — Pathfinder Partners LLC, officed at 4350 La Jolla Village Drive, has announced a joint venture with Raintree Residential LLC, a real estate investment affiliate of a leading San Diego property management firm, to acquire single-family homes, townhomes and condominiums from bank real-estate owned departments and through short sales. Pathfinder, a company specializing in making opportunistic investments in distressed real estate assets and defaulted loans, released a statement Friday stating the venture has committed more than $5 million of capital to purchase and renovate 50 single-family homes in Escondido, Chula Vista and other areas of San Diego County that have been hit hard by foreclosures. Pathfinder Raintree will lease the properties, and is upgrading them to add value and ultimately stabilize the communities. — Claire Harlin