New Fairfield firefighters have provided mutual aid to the Putnam Lake Fire Department for a residential blaze.  The structure fire was reported on Kingston Road on Monday afternoon.  Patterson fire department arrived first on the scene and escalated the call to a second alarm.  Crews quickly realized that the house was under construction and unoccupied. They stretched a hand-line to the deck and started to extinguish the flames.  Brewster firefighters also responded to the scene while the Pawling Fire Department covered the Put Lake firehouse.  The fire is currently under investigation, the cause is undetermined at this time. No injuries were reported.