A California homeowner has threatened to sue the state after the Department of Fish and Wildlife failed to remove a 550-pound bear living under his house.

Kenneth Johnson, 63, discovered the massive male black bear had taken up residence in the crawl space of his $1.5 million Altadena home just before Thanksgiving.

The California Department of Fish and Wildlife (CDFW) attempted to capture the beast, called Yellow 2120 by researchers, with bait and noisemakers.

But their efforts were unsuccessful on December 9 when they trapped a smaller bear instead.

'I knew my bear hadn’t gone out because I’ve got enough cameras on it,' Johnson told the Los Angeles Times.

The department tagged and released the smaller bear, but Johnson said Yellow 2120 is still terrorizing his home despite his efforts to flush the creature out.

Johnson told the outlet that he jury-rigged a burglar alarm with foam so it makes a clattering sound and burned CDs with hours of dog barking audio and pointed speakers into the vents.

'If I kept track of everything I tried, it would be Bear 14, Homeowner 0,' Johnson added to KTLA, using a sports analogy to show his losing record with the bear.

Kenneth Johnson (pictured), 63, has threatened to sue the California Department of Fish and Wildlife after they failed to remove a 550-pound bear living under his house

Johnson discovered the massive male black bear had taken up residence in the crawl space of his Altadena home just before Thanksgiving

Johnson is now threatening to sue the department, accusing officials of negligence and emotional distress after he claimed they suddenly told him to stand down on his efforts to remove the bear.

'I felt very defeated. I just dropped. Now what? It's all up to me, and I'm supposed to watch my phone when he comes out in the middle of the night? Or sleep in the kitchen and listen for him every night?' he said.

He even said he asked if he could keep trying to lure the bear out on his own, and was told, 'No, can't do that.'

'This has gone on long enough, and it's something that they should deal with. It's a tagged bear. They've dealt with it before. They chose not to euthanize it, and now it's back and it's just going to keep on doing this,' Johnson said. 

However, a spokesperson from the California Department of Fish and Wildlife told the Daily Mail they are committed to helping Johnson.