The fires broke out over a three-hour span in January 2018.
Point Pleasant firefighters put out a chimney fire at 112 Hartsdale Road late on night, but the fire rekindled early the next morning and the house was destroyed by the second blaze.
Rachel Conrad and her family claim the second fire was caused by the fire company's negligence.
The suit alleges firefighters failed to take steps to make sure the fire wouldn't rekindle. The lawsuit seeks more than $465,000 in damages.