Inside a small room attached to the garage they found a small casino with five poker and slot machines.
They also found two slot machines in the garage and a craps table hanging from the wall.
Ten people were arrested including the homeowner.
Two months ago agents had gotten a tip that there was an illegal casino operating at the home.
Since then, investigators had been secretly watching the home as people came and went at all hours of the day and night.
Agents believe the machines are rigged and gamblers have been dumping thousands of dollars into them.
The ten people arrested face several charges ranging from misdemeanors to felonies.