The 'Twilight Saga' actress - whose apartment in West Hollywood's Granville Towers went up in flames due to an unattended candle in March - is being sued by four other residents of the building, who claim the blaze has turned the historic building into a "disruptive construction zone".
And the plaintiffs - Timothy Long, a producer of 'The Simpsons', John Luciano, doorman Adrian Mayorga, and interior designer Anna Lobell - have slammed the 26-year-old star as being a bad neighbour who has never apologised for the fire and refused to co-operate with the investigation.
Mr. Luciano told the New York Post newspaper: "Living next to Ashley was pure hell. It was like living next to Studio 54, with people coming and going at all hours of the night. We would have had more peace and quiet living next to Charlie Sheen and Brooke Mueller."
The group are seeking unspecified damages in their lawsuit, with their lawyer Keith Davidson saying: "My clients have been through hell."
Ashley - whose beloved dog Marlo died in the fire - is said to be "completely distraught" over the legal action.
A source said: "None of it was intentional and she feels deeply saddened by the whole thing."
It was claimed after the blaze that residents had previously complained to the building manager about their famous tenant.
Ashley's neighbours were reportedly unsurprised by the fire and claimed she caused commotion by inviting friends and fellow actors over to her condo at all hours of the day, including during the middle of the night, resulting in the people living below her having trouble sleeping.