The Central Library is a vibrant academic nerve-centre housing an extensive collection of rare books, reference volumes, research journals, periodicals, and e-resources. With a seating capacity of 250+ students in calm, air-conditioned reading halls, it provides automated OPAC book searching, barcode issuance, and high-speed terminals for online digital research.

The Legal Aid Clinic at Bihar National College is established in alignment with State Legal Services Authority (BSLSA) guidelines to provide free legal advice, grievance counseling, and rights awareness to underprivileged citizens, students, and local community members. Faculty coordinators and empanelled legal advisors organize periodic Legal Literacy Camps, consumer awareness drives, and mediation workshops.

B.N. College boasts rich sporting infrastructure situated right on the main campus and adjacent grounds. Students participate actively in inter-college, inter-university, and national championships across Cricket, Football, Volleyball, Basketball, Athletics, Kabaddi, Badminton, Chess, and Table Tennis under the guidance of trained Physical Directors and Coaches.

The college features fully equipped, acoustically treated, centrally air-conditioned Seminar Halls and Conference Chambers tailored for hosting National & International Symposia, Faculty Development Programmes (FDPs), Inter-College Debates, Annual Orientations, and Guest Lectures by eminent scholars and dignitaries.

A dedicated on-campus Health Care & Dispensary Unit functions to safeguard the health and well-being of students, hostel residents, faculty, and staff. Qualified medical practitioners and first-aid attendants attend to routine consultations, free primary medicine distribution, and emergency care with immediate referral coordination to Patna Medical College & Hospital (PMCH), located nearby.

The college maintains advanced research and practical laboratories equipped with modern precision apparatus, digital spectrometers, spectrophotometers, laminar air flows, PCR thermal cyclers, GIS mapping workstations, and high-performance multi-terminal BCA computer labs.

The college offers comprehensive on-campus and proximate hostel accommodations including Shatabdi Boys Hostel, Central Hostel, and Raman Hostel. Each hostel is supervised by resident superintendents, featuring dining mess facilities, Wi-Fi connectivity, security surveillance, common recreation rooms, and sports amenities.

The entire collegiate perimeter is connected via 1 Gbps high-speed optical fiber bandwidth under the National Knowledge Network (NKN) scheme. Secured Wi-Fi access points facilitate digital coursework, research retrieval, e-admissions, fee payments, and smart digital classrooms for all students and academic faculty.