Tillerbyen, the eastern part of the village of Heimdal, is a recent development, planned to ease the pressure on central Trondheim from the commercial boom in the inner city.

Heimdal proper is a traditional commercial and transportation center; the railway has connections to Sweden (Nabotåget, literally meaning the neighbour train), to Oslo and the south of Norway via the Dovre Line as well as to the north.

In addition to the large residential areas, Heimdal houses many of the city's leading enterprises and services.

City Syd was at the time of its construction the largest shopping mall in the country and is still one of the most profitable shopping malls in Northern Europe, as it receives customers not only from the city, but from the surrounding countryside and neighbouring counties as well.

Heimdal Stadion is a large sports complex with soccer and handball fields adjacent to the Breidablikk School.