A blaze that's burned through four hectares of bush in Auckland's northwest is contained

Eight fire crews were called to Greenhithe's Upper Harbour Drive about midday.

At least 32 firefighters tackled the blaze -- with help from a helicopter with a monsoon bucket.

There's no reported property damage or injuries, although 10 homes were earlier evacuated.

Upper Harbour Drive is closed between Greenhithe Road and Emily Lane.