ORINDA — Firefighters put out a two-alarm blaze at a home in the Orinda hills, and its occupants escaped injury, the Moraga-Orinda Fire District said.

Firefighters were summoned to the vintage home in the 100 block of Camino Don Miguel about 2:35 a.m., said Fire Marshal Mike Mentink. They sounded a second alarm in part because of trees surrounding the area and the age of the home.

The fire was brought under control by 4 a.m., Mentink said. The fire at the home, built in the 1930s, was difficult to fight because of the plaster portions of the construction, he said.

The configuration of the home also made it a challenge to get to the attic, where the fire is believed to have started, Mentink said.

A smoke detector alarm alerted the couple living in the home and they safely got out of the home, along with their pets. No injuries were reported.

Mentink said an initial damage estimate was $400,000 for structure and property damage. The cause of the fire is under investigation.

Robert Salonga covers public safety. Contact him at 925-943-8013. Follow him at Twitter.com/robertsalonga