Roseville city spokeswoman Vonette McCauley says the blaze started about 2:30 p.m. Friday on a nature trail behind an elementary school. Winds helped spread it to the 152-acre Maidu (MY-doo) Park, burning dry grass and oak woodlands.
The fire then damaged the homes in a surrounding subdivision. Firefighters protected other threatened houses with help from a water-dropping helicopter.
Officials say the damages ranged from mild to moderate. No injuries were reported.
The fire burned about 30 acres in the park, but it was nearly surrounded and the threat to homes was over.
The fire was among several small blazes in the area.