No animals were in the stable off Porangahau Rd, near the intersection with Racecourse Rd, where the fire was reported at 7.18am.
The Fire and Emergency spokesperson said the building was ablaze with the roof collapsing when the first appliances arrived.
Volunteers firefighters from the Waipukurau, Waipawa and Otane brigades attended along with members of Tamatea Rural Fire, while crews from Napier and Hastings were also called out but were ultimately not needed at the scene.
Meanwhile, emergency services were called to have involved a truck and a car north of Napier today. The collision, on Tangoio Settlement Rd, was reported at 10.28am.
No one was trapped in the vehicles and no injuries were reported.