Blair Academy

Almost all campus architecture is in the Richardson Romanesque style, and modern buildings reflect the features and themes of the older structures. There are six major academic buildings: Clinton Hall, Bogle Science Center, Timken Library, Armstrong-Hipkins Center for the Arts, Weber Hall, and the Chiang-Elghanayan Center for Innovation and Collaboration.

Bogle Science Center, dedicated in 1989 and expanded and renovated in 2019, provides laboratories and classrooms for the science department and includes the 100-seat Cowan Auditorium. Armstrong-Hipkins Center for the Arts was dedicated in 1997 and includes the 500-seat DuBois Theatre, the black box Wean Theatre, and practice rooms. The renovated Timken Library opened in 1998. Annie Hall, a girls' dormitory, opened in the fall of 1999. The Romano Dining Hall was completed in the fall of 2000, and renovation of Insley Hall was completed in 2001.

A major expansion and renovation of the school's athletic and activities facilities and fields occurred between 2006 and 2009: a lighted, synthetic turf field for football, field hockey, and soccer, with new stands, press box, and 400 meter all-weather track; ten new tennis courts (five lighted), a new junior varsity baseball field, and expansion of the existing, natural grass fields. The renovation and expansion of the existing athletic center, including a new student center, concluded in March 2009. This facility, known as Hardwick Hall, houses seven squash courts, three gymnasiums, wrestling facilities, aerobic space, a fitness center, a training room, and locker rooms, and also includes Blair Commons, home of the School's bookstore, The Black Canteen, and college counseling offices. Blair's athletic facilities also include a nine-hole golf course.

The School's pedestrian campus was completed in 2010, making the center of campus vehicle-free. In 2015, the School opened Kathryn Hall, an upper-school girls' dormitory, and Lakeside Hall, an upper-school boys' dormitory, each of which includes three faculty apartments. The Chiang-Elghanayan Center for Innovation and Collaboration, a modern, technology-rich academic facility was completed in 2017 and serves as home to Blair's technology and fine arts departments. Also in 2017, Weber Hall was renovated to best facilitate the teaching of math. In 2018, Blair added the J. Li Golf Training Center and seasonal winter sports complex to its athletic facilities. In 2021 a crew training center was opened and the "Shipyard" outdoor basketball court was named. The all-weather track was resurfaced in 2024.