Balmoral Castle is built from granite quarried in Invergelder. It consists of two main parts arranged around the courtyard. In the southwestern part, there are the main rooms, and in the north-western wing, there are service rooms.
To the southeast is a 24-meter-high clock tower topped with turrets, one of which has a balustrade similar to that of Fraser Castle - the most extensive castle in Scotland, and one of the grandest.
The architecture of the new castle is similar in style to the demolished castle from the 1830s. It has been described as orderly, pedantic, and even Germanic, due to its great influence on Prince Albert's design.