The houses were destroyed mostly in areas where anti-regime resistance is strongest.
Junta troops stationed in the hilltop town in Chin State staged their 26th arson attack on residences there late last month, an aid group said.
Around 254 houses in Thantlang have burned down in two months with residents blaming regime troops.
In an unusual move, all 15 members of the Council called for an end to fighting and urged the regime’s forces to show ‘utmost restraint’.
The State Department described the bombardment of Thantlang and destruction of homes and churches as ‘abhorrent’ and called for the regime to be held accountable.
Women and children killed and injured after regime forces bombard the town of Mobye in southern Shan State.
The regime is moving reinforcements into Chin State in an attempt to crush resistance groups and take back control of the mountainous state.