Firefighters haven't even put out Lower Hutt factory fire out yet - and insurance assessors already arrived to write it off for demolition

It's not known what caused the fire to break out just after six this morning on Hutt Park Road in Seaview.

The building contains a chair-making, and timber-framing businesses... meaning a lot of wood.

Area Commander, Gavin Dunphy, says his firefighters haven't been able to get inside yet, because it was such a big blaze.

It's also filled with asbestos.

Dunphy says it's not related to the fire nearby about a week ago.

He says that one was accidental - and they haven't started investigating this one.