Newt Scamander’s house in London was an otherwise-normal home with a basement that served as a menagerie and hospital for magical creatures (CG).
Exterior: Newt’s home was a typical-looking yellow brick nineteenth-century house on a street of similar houses (CG).
Upper part of the house: The above-ground part of Newt’s home was sparsely furnished, and Newt was more invested in his basement menagerie (CG).
Basement: Newt’s basement housed a variety of magical beasts – at least some of which were receiving medical care. The basement menagerie included a treasure-filled Niffler enclosure, Augureys, a Kelpie in a large volume of dark water, and a Griffin (CG).
Canon Notes and References
Three baby Nifflers were running amok in Newt's living quarters when he returned home after being asked by Dumbledore to go to Paris (CG).
Queenie Goldstein and Jacob Kowalski came to Newt's house when Queenie brought an enchanted Jacob to London to get married (CG).