The fire broke out in a mobile home at 15122 E. Blacks Creek Road north of Interstate 84.
A traveler on Interstate 84 reported the fire at 2:35 p.m.
The residents, who were home when the fire broke out, quickly began to fight the blaze, including using a backhoe to dig a fire line, said Bureau of Land Management Idaho spokesperson Brandon Hampton.
When Boise BLM and Boise National Forest officials arrived on scene and realized the scope of the structure fire, they ordered a structure fire engine from the nearby Idaho Army National Guard Orchard Combat Training Center because the home is not within a fire-protection district, explained Hampton.
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No residents or firefighters were injured in the fire, which burned a quarter acre, destroying one of two mobile homes on the site and a utility vehicle. A dog also was killed in the fire.
Fire crews, residents and neighbors all worked to keep the fire from spreading to adjacent sagebrush and grassland, said Hampton. The fire was contained about 6:30 p.m.
The cause of the fire is under investigation.