Please answer the following question: The Homer-Lovell House is an historic house at 11 Forest Street just outside Porter Square in Cambridge Massachusetts. The two story wood frame house was built in two sections: the main block a fine Second Empire house was built in 1867 when the Porter Square area was growing as a residential area because of its train station. In the 1920s the house was extended to the rear and converted into a two-family. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Building