Here are some options depending on the context:
* For a group of buildings in a specific location:
* Cluster (e.g., a cluster of office buildings)
* Complex (e.g., an apartment complex)
* Development (e.g., a new housing development)
* Ensemble (e.g., an ensemble of historical buildings)
* For a group of similar buildings:
* Range (e.g., a range of Victorian buildings)
* Row (e.g., a row of houses)
* Line (e.g., a line of factories)
* For a group of buildings with a specific purpose:
* Campus (e.g., a university campus)
* Hospital (e.g., a hospital complex)
* City (e.g., a city of skyscrapers)
Ultimately, the best way to describe a group of buildings depends on the context and the specific buildings you are referring to.