Video has emerged of a fire that caused significant damage to a heritage house in Christchurch.

Emergency services were called to the fire at a 105-year-old house on Park Terrace just after 1AM on Sunday.

The blaze was well ablaze by the time firefighters arrived on the scene.

A 40-year-old man is expected to appear in court today charged with arson.

No one was home at the time of the blaze.