Mr Latter said the thank you was received "very, very well".
"I think what we wanted to do was make it a good news insurance job," he said.
"Because they were very, very professional and did a very good job in restoring our buildings to what they were."
The fire at the church in Gloucester St last April was thought by police and firemen to have "smouldered" in a doorway for hours before being discovered by a passerby about 7am.
Mr Latter said then the firefighters brought in a fan to ventilate the building and wiped the seating clean, meaning the service could start on time at 9.30am.
The fire put the Sunday School and a lounge out of action for several months.
However, Mr Latter said now it is "back to business as usual" for the church.