One person was killed and six people — including a firefighter — were transported to a hospital after a house fire Tuesday night in southwest Denver.

Firefighters were called at about 6:50 p.m. to 9752 W. Stanford Ave., near the intersection of West Quincy Avenue and South Kipling Street.

The two-story home was fully involved when firefighters arrived, with heavy flames in the basement.

Capt. Greg Pixley of Denver Fire said firefighters initial attempts to enter the house were turned back by the intense heat and they would have fought the blaze from a defensive position except that “when we knew people were inside, the search moved forward.”

“We used everything we had on it,” he said. West Metro firefighters arrived to join in the effort, which involved dozens of firefighters and more than a half-dozen trucks.

Two people were rescued from inside the house by firefighters. One person was found dead inside the house, Pixley said.

Neighbors said that a couple lived in the house along with a young man, who they described as handicapped. They said he was the person died.

The neighbors also said that a young granddaughter, who was visiting, jumped out the window and spread the alarm.

Two neighbors were injured when they tried to help rescue people from inside the house, Pixley said. One firefighter was transported with minor injuries and a second firefighter was treated at the scene.

“This is so sad,” neighbor Jamie Howell said of the loss of life.

Three dogs were also in the house, neighbors said. One is being cared for and two are unaccounted for.

Kieran Nicholson: 303-954-1822, knicholson@denverpost.com or @kierannicholson