The house fire in Kula that displaced eight farm workers caused $712,500 in damage.

The cause is still undetermined.

However, based on witness accounts, fire investigators believe that the fire started under a covered storage area attached to the home. The flames grew and eventually spread to the living areas of the structure.

The fire was reported at 6:48 p.m. Tuesday on Kamehameiki Road and destroyed a 3,000-square-foot, one-story farm dwelling. Firefighters said damage included $600,000 to the structure, $2,500 to the siding of a greenhouse 20 feet away, and $10,000 to a nearby tractor.

Firefighters extinguished the fire at 10:37 p.m. Tuesday but returned about 5:40 a.m. Wednesday after the fire rekindled on the roof.

Firefighters extinguished the flare-up at 2:40 p.m.

Eight residents living in the dwelling for farm workers were home at the time and escaped without injury. The American Red Cross is assisting them.

Wednesday morning’s flare-up did not affect any additional structures.