More than three years after category 4 Cyclone Lam smashed into an Arnhem Land community, some residents are still waiting for their homes to be rebuilt.

Asbestos soil contamination has delayed rebuilds by at least six months, according to Kaye Thurlow, the Galiwin'ku's community representative on the East Arnhem Regional Council.

"Just in the last 12 months one lot of contractors discovered there was residual asbestos lying around in some of the locations where old houses had been demolished," she said.

Eighty homes were destroyed and hundreds of people were displaced when Cyclone Lam hit Elcho Island in February 2015, followed by the less severe Cyclone Nathan about a month later.