Firefighters are battling a blaze in a mechanical workshop in West Auckland.
Fire services were called to the mechanical workshop and factory in Ranui at 5.23pm.
Fire Service northern communications shift commander Scott Osmond said the fire was in the front two units of the property.
"It's getting under control. We're still using multiple deliveries of water on it but it's pretty much under control and not believed suspicious.
He said there were no injuries.
He said nine units were called to the scene.
Police have blocked off vehicle access to the one-way street said Northern communications senior sergeant Matt Rogers.
"People have been asked to move out of the way so there is space for fire engines to do their job.''
"They haven't asked people to evacuate but they're stopping people coming in and getting people out of the way.''
He said police were monitoring traffic flows on the adjoining main thoroughfare Swanson Rd.