A house fire in Redding required mutual aid Friday night, but was contained to the room of origin. West Redding was dispatched to Marchant Road shortly before 8:30pm on a report of fire coming from the rear of the home.  Bethel Fire and EMS, along with Redding and Georgetown, responded to the scene.  All occupants and two dogs were safely outside when firefighters arrived.  Firefighters opened the two story cathedral ceiling and worked to protect the recently framed addition.  Fire officials say roof operations were limited due to a solar panel array. No injuries were reported.  Mutual aid was also provided by Miry Brook, Weston Volunteer and Easton Volunteer, and Ridgefield Volunteer Fire Departments. The West Redding Fire Marshall is investigating the cause.