Somerville Baptist College comprises of 4 main blocks. An Administration block, Southern, Central and Northern blocks of classrooms.

The Administration block houses the Administration Staff, Reception, Accounts and Student administration. The Staff room is located to the rear of the Administration block. 

The Southern block (closest to Farrington Road) houses Maths/Computing and Media classes.

The Central block houses Science laboratories on the upper level and Kitchens/Workshop and Computer Lab downstairs. A lift is also located in this block.

The Northern block houses the Language, Society and Environment and English classes.

The College Library is a shared facility with Winthrop Baptist College, as is the College Auditorium. Somerville has just completed a new Dance studio which is located upstairs in the Auditorium along with the special Drama and Music rooms. The College Art room is also located in the auditorium complex.

Somerville uses the Murdoch University playing fields for some Physical Education classes and activities during lunch breaks.