A fire investigator has been called to the property, Walklin confirmed, as the blaze is being treated as suspicious.
The Southbrook home was the centre of a police search last month after a fire gutted the building back in September last year.
A tent was put up outside the property at the time, spotlights were also erected and the property was taped off to the public as armed police stood guard.
Work had started on the high-profile site in recent times, with workmen seen stripping the roof and securing the property.
It’s understood the May enquiries were a result of the ongoing investigation into the murder of Richard Leman, whose remains were found in a garage on nearby Tyler St, inside his white Nissan Fuga.
Last Saturday morning police raided a property on Oxford Rd, Rangiora, and arrested a 46-year-old man, who has since been charged with murdering Leman on April 11.
However, officers believe others were involved in the incident.
“We believe the others involved would have discussed what occurred with their friends and associates,” said Detective Senior Sergeant Tania Jellyman.
“Police are appealing to those people and members of the public for their assistance in holding these people to account for their actions.
“We have every confidence that someone in the Rangiora community knows what has happened here. We are urging you to do the right thing and come forward to speak to us.”