Up to 30 Sydney homes are uninhabitable following the thunderstorms that lashed southern Sydney on Wednesday morning.
Record gusts in excess of 200km/h hit the suburb of Kurnell, causing major damage to schools, houses and plants.
The NSW State Emergency Service Deputy Commissioner Greg Newton said many areas of Sydney remained a mess.
"Some properties, 25 to 30, have been quite extensively damaged," Mr Newton told the Seven Network.
"Roofs pulled off and other structural damage.
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"That will make those properties uninhabitable."
He said four-to-five hour delays remain at Sydney Airport.

