Police confirmed they have previously been to the Canvastown property in relation to the unsolved disappearance of Jessica Boyce.
However they said at this stage, there was no information to suggest the burning of rubbish and vehicles today related to that investigation.
Boyce went missing from Renwick, near Blenheim, in March 2019 and the case was upgraded to a homicide investigation in October that year.
Police said they were called to the fire in Te Hora Pa Rd about 10.50am today assist with traffic control. There were cordons in place at the north and south ends of the road.
Fire and Emergency NZ said crews were called to the property, near State Highway 6, an hour earlier.
Crews from 11 stations, including Nelson and Blenheim, along with a helicopter helped to bring the blaze under control.
It is understood about 25 cars and four buses were damaged.
It is not known how the fire started and there were no reports of injuries or damage to buildings.
Cold case - Jessica Boyce
Jessica Boyce was 27 when she went missing on March 19 in 2019.
The last confirmed sighting of her was about 4pm driving west past the Woodbourne Air Force base on SH6 in her mother's red ute with a male passenger.
The ute was found three days later on the road leading to Lake Chalice in Mount Richmond Forest Park, with Boyce's broken glasses hidden inside and a necklace she reportedly never took off hanging from the rear view mirror.
A male profile of DNA on the glasses was unable to be matched, but the female DNA sample had been confirmed as Boyce's.
The case was formally upgraded to a homicide investigation in October 2019.
Boyce's body has never been found and police have offered a $100,000 reward for credible information relating to her disappearance.
