Taranaki firefighters are being scrambled to a rural fire at a "well lit" commercial building used for vehicle repairs.

First responders from Stratford have scrambled to the scene on Hastings Rd, just south of Stratford.

The commercial building, 40m x 40m, was well lit and surrounding building were currently at risk, a Fire and Emergency New Zealand spokesman said.

Six trucks as well as several support units were en route, the spokesman said.

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By 3.30pm firefighters had the fire under control but several crews were still working to put it out fully.

The building contained bottles of oxy-acetylene, a chemical product and hazmat teams were in attendance.

Firefighters have now left the site of a kitchen fire in Upper Hutt after reports of a stove-top fire that had spread to curtains.

One person was treated for burns at the scene on Plateau Rd but the severity of their injuries was not clear, a spokesman said.