Redfin announced today it completed its purchase of Bay Equity Home Loans for $137.8 million in cash, allowing the online real estate company to offer its homebuyers access to a full-service mortgage lending operation and making it a one-stop shop for consumers to finance a home purchase. Starting today, Redfin says, its real estate agents will be able to link their prospective homebuyers to a local Bay Equity loan officer in 91 markets.