A caretaker from the church across the road, Greg Brown, said he would frequently shut the property's gate to keep people out.
He said it was often visited by kids who would even have parties in the house - a home which has been abandoned since the Christchurch earthquakes.
Fendalton Rd was down to one lane heading into the city at 7am.
It is the second suspicious and third total fire in Christchurch in a week.
A 105-year-old house in Park Terrace was significantly damaged on Sunday.
Thomas and Laura Mckellow are the owners of the property.
They told the Herald a family member and some friends were visiting for the weekend but were out at the time of the incident.
"They returned home to find the house in flames. We are truly devastated by the loss but are just thankful no one was asleep upstairs at the time.
"My wife and I have worked tirelessly to restore the property to its former glory from earthquake damage and this is a real blow to us. We would like to thank emergency services for their quick response and efforts to control the fire," Thomas Mckellow said.
A 40-year-old man charged with arson is expected to reappear in the Christchurch District Court on Wednesday.