The government says it has also increased the cap on claims to $80,000 from $50,000 for homeowners and small businesses.
The cap for non-profit organizations will rise to $200,000 from $50,000.
The government says the changes will remain in effect for future disaster assistance claims.
Truro deputy mayor Ron Cavanaugh says the assistance program will be a "great help" to those whose properties were flooded Sept. 10 when more than 100 millimetres of rain fell.
The government says it will apply to Ottawa to cover a portion of the aid package.