This is the first film in the series to be directly affiliated with the 1986 original, but here are some glaring inconsistencies. One is that William Katt's character is married to Terri Treas with a 12 year old daughter, with no mention of the fact that he was married to Kay Lenz and had a son in the first film.
The only sequel in the series to actually be written and conceived as a sequel to the original from the start.
The house is not meant to be the house from the original movie. The original movie was meant to be inheritance from Roger's aunt. This house is an inheritance from his father
Nowhere in the film is it addressed how wheelchair-bound Laurel is able to get upstairs or the front steps.