Fenton Works is a residential location from the original show.
It is a company owned by Jack and Maddie Fenton and run from the basement of the Fenton family's house. It figures prominently as the name displayed at the top of the building.
Within the Danny Phantom: Spectral Connections series, the Fenton Works location is nearly identical to the one from mainstream media. It is first reintroduced in the Season 1 episode, "School-Shocked." Pending more...