The village is located in Hadeland, along the eastern shore of the large lake Randsfjorden, about 60 kilometres (37 mi) to the northwest of the capital city of Oslo.

[3] Brandbu and its neighboring village of Jaren have grown together through conurbation and Statistics Norway has considered them as one, single urban settlement for many years.

[1] From the top of the 522-metre (1,713 ft) tall mountain Brandbukampen (originally a volcano from the Permian Period), there is a wide view of Brandbu and the villages surrounding it.

The village of Egge lies at the base of the mountain, about 2 kilometres (1.2 mi) to the northwest of Brandbu.

Although the main bridge was moved to Rosendal, a little a bit further up river in the mid-1800s, Augedalsbro continued to be a lift station.