Lake Shore Bancorp Inc operates as a savings and loan holding company. The bank's business consists of attracting retail deposits from the general public in the areas surrounding its branch offices and investing those deposits, together with funds generated from operations, in commercial real estate loans, one-to-four family residential mortgage loans, home equity lines of credit, and, to a lesser extent, commercial business loans, consumer loans, and investment securities. Its revenues are principally derived from interest earned on loans and investment securities.