Winchester Bancorp is the bank holding company for Winchester Savings Bank, a Massachusetts-chartered community bank operating through branch offices in the greater Boston area. The bank gathers deposits from local individuals and businesses and primarily originates real estate loans throughout eastern Massachusetts. Its lending portfolio centers on one- to four-family residential mortgages, multi-family apartment properties, commercial construction, and commercial real estate. Winchester Savings Bank originates loans through its direct lending staff and local professional referral networks, retaining the vast majority of originated mortgages on its balance sheet rather than selling them into the secondary market. The bank's business model relies on generating net interest income by earning a spread between the yields on its loans and investment securities and the interest paid on customer deposits and wholesale borrowings. Winchester Savings Bank funds its lending activities using core consumer and business deposits, money market accounts, certificates of deposit, and Federal Home Loan Bank advances.